画像処理についてあれこれ

GeoToolsでラインを描画する

2012-01-27T19:13:00.000-08:00

GeoToolsでラインを描画するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import java.util.*;
import javax.imageio.*;
import org.geotools.data.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.feature.*;
import org.geotools.feature.simple.*;
import org.geotools.geometry.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.feature.type.*;
import org.opengis.geometry.coordinate.*;
import org.opengis.referencing.crs.*;
import com.vividsolutions.jts.geom.*;

public class Geotools16
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();
    // 国の名前でフィルタリング
    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    Filter filter = ff.equals(
      ff.property("NAME"),
      ff.literal("JAPAN")
    );
    SimpleFeatureCollection sfc = fs.getFeatures(filter);

    SimpleFeatureType schema = sfc.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    //スタイルを作成
    StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
    // ポリゴンの線の色
    org.geotools.styling.Stroke stroke1 = sf.createStroke(
      ff.literal(new Color(0x59, 0x58, 0x55)),
      ff.literal(1)
    );
    // ポリゴンの塗りつぶし色
    org.geotools.styling.Fill fill1 = sf.createFill(
      ff.literal(new Color(0xD2, 0xDB, 0xD5))
    );
    PolygonSymbolizer sym1 = sf.createPolygonSymbolizer(stroke1, fill1, null);

    // フィルタに一致する場合のルールを作成
    Rule rule1 = sf.createRule();
    rule1.symbolizers().add(sym1);
    rule1.setFilter(filter);
    Rule rules[] = {rule1};
    FeatureTypeStyle fts = sf.createFeatureTypeStyle(rules);
    Style style1 = sf.createStyle();
    style1.featureTypeStyles().add(fts);

    map.addLayer(new FeatureLayer(sfc, style1));

    // --------------------------------------------------
    // 別のレイヤーを作成
    // ポイント用のタイプを作成
    SimpleFeatureType pointtype = DataUtilities.createType(
      "Location", 
      "the_geom:LineString," + 
      "name:String"
    );
    SimpleFeatureBuilder sfb = new SimpleFeatureBuilder(pointtype);

    // 東京を示すポイントを作成
    // 経度
    double longitude1 = 139.6917064d;
    // 緯度
    double latitude1 = 35.6894875d;

    // 那覇を示すポイントを作成
    // 経度
    double longitude2 = 127.67898559570312d;
    // 緯度
    double latitude2 = 26.19364441820758d;

    com.vividsolutions.jts.geom.GeometryFactory gf = JTSFactoryFinder.getGeometryFactory(null);
    Coordinate cords[] = {
      new Coordinate(longitude1, latitude1), 
      new Coordinate(longitude2, latitude2)
    };
    com.vividsolutions.jts.geom.LineString lineseg = gf.createLineString(cords);
    sfb.add(lineseg);
    sfb.add("tokyo and naha");

    SimpleFeatureCollection col = FeatureCollections.newCollection();
    SimpleFeature feature1 = sfb.buildFeature(null);
    col.add(feature1);

    // 線の色
    org.geotools.styling.Stroke stroke2 = sf.createStroke(
      ff.literal(new Color(0xC8, 0x46, 0x63)),
      ff.literal(3)
    );

    GeometryDescriptor geomDesc = fs.getSchema().getGeometryDescriptor();
    String geometryAttributeName = geomDesc.getLocalName();
    LineSymbolizer sym2 = sf.createLineSymbolizer(stroke2, geometryAttributeName);

    Rule rule2 = sf.createRule();
    rule2.symbolizers().add(sym2);
    Rule rules2[] = {rule2};
    FeatureTypeStyle fts2 = sf.createFeatureTypeStyle(rules2);
    Style style2 = sf.createStyle();
    style2.featureTypeStyles().add(fts2);
    // レイヤーとして追加
    map.addLayer(new FeatureLayer(col, style2));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    ReferencedEnvelope bounds = map.getLayerBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("tokyo_and_naha.jpg"));
  }
}

出力画像

動作環境
JDK7 Update1, geotools 2.7.4

関連情報
・GeoToolsのウェブサイト
http://geotools.org/

※世界地図のシェイプファイルは以下からダウンロード
World map for APRS
http://aprsworld.net/gisdata/world/

GeoToolsで指定した地点にクロスマークを描画する

2012-01-25T18:42:00.000-08:00

GeoToolsで指定した地点にクロスマークを描画するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import org.geotools.data.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.feature.*;
import org.geotools.feature.simple.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.feature.type.*;
import org.opengis.referencing.crs.*;
import com.vividsolutions.jts.geom.*;

public class Geotools15
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();
    // 国の名前でフィルタリング
    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    Filter filter = ff.equals(
      ff.property("NAME"),
      ff.literal("JAPAN")
    );
    SimpleFeatureCollection sfc = fs.getFeatures(filter);

    SimpleFeatureType schema = sfc.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    //スタイルを作成
    StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
    // ポリゴンの線の色
    org.geotools.styling.Stroke stroke1 = sf.createStroke(
      ff.literal(new Color(0x59, 0x58, 0x55)),
      ff.literal(1)
    );
    // ポリゴンの塗りつぶし色
    org.geotools.styling.Fill fill1 = sf.createFill(
      ff.literal(new Color(0xD2, 0xDB, 0xD5))
    );
    PolygonSymbolizer sym1 = sf.createPolygonSymbolizer(stroke1, fill1, null);

    // フィルタに一致する場合のルールを作成
    Rule rule1 = sf.createRule();
    rule1.symbolizers().add(sym1);
    rule1.setFilter(filter);
    Rule rules[] = {rule1};
    FeatureTypeStyle fts = sf.createFeatureTypeStyle(rules);
    Style style1 = sf.createStyle();
    style1.featureTypeStyles().add(fts);

    map.addLayer(new FeatureLayer(sfc, style1));

    // --------------------------------------------------
    // 別のレイヤーを作成
    // ポイント用のタイプを作成
    SimpleFeatureType pointtype = DataUtilities.createType(
      "Location", 
      "the_geom:Point," + 
      "name:String"
    );
    SimpleFeatureBuilder sfb = new SimpleFeatureBuilder(pointtype);

    // 大阪を示すポイントを作成
    // 経度
    double longitude = 135.5021651d;
    // 緯度
    double latitude = 34.6937378d;
    GeometryFactory gf = JTSFactoryFinder.getGeometryFactory(null);
    com.vividsolutions.jts.geom.Point point = gf.createPoint(new Coordinate(longitude, latitude));
    sfb.add(point);
    sfb.add("osaka");

    SimpleFeatureCollection col = FeatureCollections.newCollection();
    SimpleFeature feature1 = sfb.buildFeature(null);
    col.add(feature1);

    // マーカーの線
    org.geotools.styling.Stroke stroke2 = sf.createStroke(
      ff.literal(new Color(0xC8, 0x46, 0x63)),
      ff.literal(3)
    );
    // マーカーの塗りつぶし色
    org.geotools.styling.Fill fill2 = sf.createFill(ff.literal(new Color(0xff, 0xC8, 0x61)));

    // マーカーの形
    Mark mark = sf.getCrossMark();
    mark.setFill(fill2);
    mark.setStroke(stroke2);

    Graphic graphic = sf.createDefaultGraphic();
    graphic.graphicalSymbols().clear();
    graphic.graphicalSymbols().add(mark);
    graphic.setSize(ff.literal(18));

    GeometryDescriptor geomDesc = fs.getSchema().getGeometryDescriptor();
    String geometryAttributeName = geomDesc.getLocalName();
    PointSymbolizer sym2 = sf.createPointSymbolizer(graphic, geometryAttributeName);

    Rule rule2 = sf.createRule();
    rule2.symbolizers().add(sym2);
    Rule rules2[] = {rule2};
    FeatureTypeStyle fts2 = sf.createFeatureTypeStyle(rules2);
    Style style2 = sf.createStyle();
    style2.featureTypeStyles().add(fts2);
    // レイヤーとして追加
    map.addLayer(new FeatureLayer(col, style2));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    ReferencedEnvelope bounds = map.getLayerBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("osaka.jpg"));
  }
}

出力画像

GeoToolsで表示範囲を設定する

2012-01-23T18:36:00.000-08:00

GeoToolsで表示範囲を設定するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import org.geotools.data.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.feature.*;
import org.geotools.feature.simple.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.feature.type.*;
import org.opengis.referencing.crs.*;
import com.vividsolutions.jts.geom.*;

public class Geotools14
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();
    // 国の名前でフィルタリング
    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    Filter filter = ff.equals(
      ff.property("NAME"),
      ff.literal("JAPAN")
    );
    SimpleFeatureCollection sfc = fs.getFeatures(filter);

    SimpleFeatureType schema = sfc.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    //スタイルを作成
    StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
    // ポリゴンの線の色
    org.geotools.styling.Stroke stroke1 = sf.createStroke(
      ff.literal(new Color(0x59, 0x58, 0x55)),
      ff.literal(1)
    );
    // ポリゴンの塗りつぶし色
    org.geotools.styling.Fill fill1 = sf.createFill(
      ff.literal(new Color(0xD2, 0xDB, 0xD5))
    );
    PolygonSymbolizer sym1 = sf.createPolygonSymbolizer(stroke1, fill1, null);

    // フィルタに一致する場合のルールを作成
    Rule rule1 = sf.createRule();
    rule1.symbolizers().add(sym1);
    rule1.setFilter(filter);
    Rule rules[] = {rule1};
    FeatureTypeStyle fts = sf.createFeatureTypeStyle(rules);
    Style style1 = sf.createStyle();
    style1.featureTypeStyles().add(fts);

    map.addLayer(new FeatureLayer(sfc, style1));

    // --------------------------------------------------
    // 別のレイヤーを作成
    // ポイント用のタイプを作成
    SimpleFeatureType pointtype = DataUtilities.createType(
      "Location", 
      "the_geom:Point," + 
      "name:String"
    );
    SimpleFeatureBuilder sfb = new SimpleFeatureBuilder(pointtype);

    // 東京を示すポイントを作成
    // 経度
    double longitude = 139.6917064d;
    // 緯度
    double latitude = 35.6894875d;
    GeometryFactory gf = JTSFactoryFinder.getGeometryFactory(null);
    com.vividsolutions.jts.geom.Point point = gf.createPoint(new Coordinate(longitude, latitude));
    sfb.add(point);
    sfb.add("tokyo");

    SimpleFeatureCollection col = FeatureCollections.newCollection();
    SimpleFeature feature1 = sfb.buildFeature(null);
    col.add(feature1);

    // マーカーの線
    org.geotools.styling.Stroke stroke2 = sf.createStroke(
      ff.literal(new Color(0xC8, 0x46, 0x63)),
      ff.literal(3)
    );
    // マーカーの塗りつぶし色
    org.geotools.styling.Fill fill2 = sf.createFill(ff.literal(new Color(0xff, 0xC8, 0x61)));

    // マーカーの形
    Mark mark = sf.getCircleMark();
    mark.setFill(fill2);
    mark.setStroke(stroke2);

    Graphic graphic = sf.createDefaultGraphic();
    graphic.graphicalSymbols().clear();
    graphic.graphicalSymbols().add(mark);
    graphic.setSize(ff.literal(10));

    GeometryDescriptor geomDesc = fs.getSchema().getGeometryDescriptor();
    String geometryAttributeName = geomDesc.getLocalName();
    PointSymbolizer sym2 = sf.createPointSymbolizer(graphic, geometryAttributeName);

    Rule rule2 = sf.createRule();
    rule2.symbolizers().add(sym2);
    Rule rules2[] = {rule2};
    FeatureTypeStyle fts2 = sf.createFeatureTypeStyle(rules2);
    Style style2 = sf.createStyle();
    style2.featureTypeStyles().add(fts2);
    // レイヤーとして追加
    map.addLayer(new FeatureLayer(col, style2));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    // 表示範囲を設定
    ReferencedEnvelope bounds = new ReferencedEnvelope(
      longitude-1, longitude+1, latitude-1, latitude+1, 
      map.getViewport().getBounds().getCoordinateReferenceSystem()
    );
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("around_tokyo.jpg"));
  }
}

出力画像

GeoToolsで指定した地点にXマークを描画する

2012-01-21T06:27:00.000-08:00

GeoToolsで指定した地点にXマークを描画するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import org.geotools.data.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.feature.*;
import org.geotools.feature.simple.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.feature.type.*;
import org.opengis.referencing.crs.*;
import com.vividsolutions.jts.geom.*;

public class Geotools12
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();
    // 国の名前でフィルタリング
    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    Filter filter = ff.equals(
      ff.property("NAME"),
      ff.literal("JAPAN")
    );
    SimpleFeatureCollection sfc = fs.getFeatures(filter);

    SimpleFeatureType schema = sfc.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    //スタイルを作成
    StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
    // ポリゴンの線の色
    org.geotools.styling.Stroke stroke1 = sf.createStroke(
      ff.literal(new Color(0x59, 0x58, 0x55)),
      ff.literal(1)
    );
    // ポリゴンの塗りつぶし色
    org.geotools.styling.Fill fill1 = sf.createFill(
      ff.literal(new Color(0xD2, 0xDB, 0xD5))
    );
    PolygonSymbolizer sym1 = sf.createPolygonSymbolizer(stroke1, fill1, null);

    // フィルタに一致する場合のルールを作成
    Rule rule1 = sf.createRule();
    rule1.symbolizers().add(sym1);
    rule1.setFilter(filter);
    Rule rules[] = {rule1};
    FeatureTypeStyle fts = sf.createFeatureTypeStyle(rules);
    Style style1 = sf.createStyle();
    style1.featureTypeStyles().add(fts);

    map.addLayer(new FeatureLayer(sfc, style1));

    // --------------------------------------------------
    // 別のレイヤーを作成
    // ポイント用のタイプを作成
    SimpleFeatureType pointtype = DataUtilities.createType(
      "Location", 
      "the_geom:Point," + 
      "name:String"
    );
    SimpleFeatureBuilder sfb = new SimpleFeatureBuilder(pointtype);

    // 福岡を示すポイントを作成
    // 経度
    double longitude = 130.23193359375d;
    // 緯度
    double latitude = 33.61919376817004d;
    GeometryFactory gf = JTSFactoryFinder.getGeometryFactory(null);
    com.vividsolutions.jts.geom.Point point = gf.createPoint(new Coordinate(longitude, latitude));
    sfb.add(point);
    sfb.add("fukuoka");

    SimpleFeatureCollection col = FeatureCollections.newCollection();
    SimpleFeature feature1 = sfb.buildFeature(null);
    col.add(feature1);

    // マーカーの線
    org.geotools.styling.Stroke stroke2 = sf.createStroke(
      ff.literal(new Color(0xC8, 0x46, 0x63)),
      ff.literal(3)
    );
    // マーカーの塗りつぶし色
    org.geotools.styling.Fill fill2 = sf.createFill(ff.literal(new Color(0xff, 0xC8, 0x61)));

    // マーカーの形
    Mark mark = sf.getXMark();
    mark.setFill(fill2);
    mark.setStroke(stroke2);

    Graphic graphic = sf.createDefaultGraphic();
    graphic.graphicalSymbols().clear();
    graphic.graphicalSymbols().add(mark);
    graphic.setSize(ff.literal(18));

    GeometryDescriptor geomDesc = fs.getSchema().getGeometryDescriptor();
    String geometryAttributeName = geomDesc.getLocalName();
    PointSymbolizer sym2 = sf.createPointSymbolizer(graphic, geometryAttributeName);

    Rule rule2 = sf.createRule();
    rule2.symbolizers().add(sym2);
    Rule rules2[] = {rule2};
    FeatureTypeStyle fts2 = sf.createFeatureTypeStyle(rules2);
    Style style2 = sf.createStyle();
    style2.featureTypeStyles().add(fts2);
    // レイヤーとして追加
    map.addLayer(new FeatureLayer(col, style2));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    ReferencedEnvelope bounds = map.getLayerBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("fukuoka.jpg"));
  }
}

出力画像

GeoToolsで指定した地点に三角マークを描画する

2012-01-19T06:20:00.000-08:00

GeoToolsで指定した地点に三角マークを描画するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import org.geotools.data.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.feature.*;
import org.geotools.feature.simple.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.feature.type.*;
import org.opengis.referencing.crs.*;
import com.vividsolutions.jts.geom.*;

public class Geotools11
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();
    // 国の名前でフィルタリング
    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    Filter filter = ff.equals(
      ff.property("NAME"),
      ff.literal("JAPAN")
    );
    SimpleFeatureCollection sfc = fs.getFeatures(filter);

    SimpleFeatureType schema = sfc.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    //スタイルを作成
    StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
    // ポリゴンの線の色
    org.geotools.styling.Stroke stroke1 = sf.createStroke(
      ff.literal(new Color(0x59, 0x58, 0x55)),
      ff.literal(1)
    );
    // ポリゴンの塗りつぶし色
    org.geotools.styling.Fill fill1 = sf.createFill(
      ff.literal(new Color(0xD2, 0xDB, 0xD5))
    );
    PolygonSymbolizer sym1 = sf.createPolygonSymbolizer(stroke1, fill1, null);

    // フィルタに一致する場合のルールを作成
    Rule rule1 = sf.createRule();
    rule1.symbolizers().add(sym1);
    rule1.setFilter(filter);
    Rule rules[] = {rule1};
    FeatureTypeStyle fts = sf.createFeatureTypeStyle(rules);
    Style style1 = sf.createStyle();
    style1.featureTypeStyles().add(fts);

    map.addLayer(new FeatureLayer(sfc, style1));

    // --------------------------------------------------
    // 別のレイヤーを作成
    // ポイント用のタイプを作成
    SimpleFeatureType pointtype = DataUtilities.createType(
      "Location", 
      "the_geom:Point," + 
      "name:String"
    );
    SimpleFeatureBuilder sfb = new SimpleFeatureBuilder(pointtype);

    // 金沢を示すポイントを作成
    // 経度
    double longitude = 136.6864013671875d;
    // 緯度
    double latitude = 35.26580442886754d;
    GeometryFactory gf = JTSFactoryFinder.getGeometryFactory(null);
    com.vividsolutions.jts.geom.Point point = gf.createPoint(new Coordinate(longitude, latitude));
    sfb.add(point);
    sfb.add("nagoya");

    SimpleFeatureCollection col = FeatureCollections.newCollection();
    SimpleFeature feature1 = sfb.buildFeature(null);
    col.add(feature1);

    // マーカーの線
    org.geotools.styling.Stroke stroke2 = sf.createStroke(
      ff.literal(new Color(0xC8, 0x46, 0x63)),
      ff.literal(3)
    );
    // マーカーの塗りつぶし色
    org.geotools.styling.Fill fill2 = sf.createFill(ff.literal(new Color(0xff, 0xC8, 0x61)));

    // マーカーの形
    Mark mark = sf.getTriangleMark();
    mark.setFill(fill2);
    mark.setStroke(stroke2);

    Graphic graphic = sf.createDefaultGraphic();
    graphic.graphicalSymbols().clear();
    graphic.graphicalSymbols().add(mark);
    graphic.setSize(ff.literal(18));

    GeometryDescriptor geomDesc = fs.getSchema().getGeometryDescriptor();
    String geometryAttributeName = geomDesc.getLocalName();
    PointSymbolizer sym2 = sf.createPointSymbolizer(graphic, geometryAttributeName);

    Rule rule2 = sf.createRule();
    rule2.symbolizers().add(sym2);
    Rule rules2[] = {rule2};
    FeatureTypeStyle fts2 = sf.createFeatureTypeStyle(rules2);
    Style style2 = sf.createStyle();
    style2.featureTypeStyles().add(fts2);
    // レイヤーとして追加
    map.addLayer(new FeatureLayer(col, style2));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    ReferencedEnvelope bounds = map.getLayerBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("nagoya.jpg"));
  }
}

出力画像

GeoToolsでアンチエイリアスを指定する

2012-01-17T02:18:00.000-08:00

GeoToolsでアンチエイリアスを指定するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.referencing.crs.*;

public class Geotools10
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();
    SimpleFeatureType schema = fs.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    // スタイルを作成
    Style style = SLD.createSimpleStyle(schema);
    map.addLayer(new FeatureLayer(fs, style));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);
    // アンチエイリアスを指定
    RenderingHints rh = new RenderingHints(
      RenderingHints.KEY_ANTIALIASING,
      RenderingHints.VALUE_ANTIALIAS_ON
    );
    renderer.setJava2DHints(rh);

    int width = 400;
    ReferencedEnvelope bounds = map.getMaxBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("world_antialias.jpg"));
  }
}

出力画像

GeoToolsで指定した地点に星マークを描画する

2012-01-15T02:12:00.000-08:00

GeoToolsで指定した地点に星マークを描画するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import org.geotools.data.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.feature.*;
import org.geotools.feature.simple.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.feature.type.*;
import org.opengis.referencing.crs.*;
import com.vividsolutions.jts.geom.*;

public class Geotools9
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();
    // 国の名前でフィルタリング
    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    Filter filter = ff.equals(
      ff.property("NAME"),
      ff.literal("JAPAN")
    );
    SimpleFeatureCollection sfc = fs.getFeatures(filter);

    SimpleFeatureType schema = sfc.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    //スタイルを作成
    StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
    // ポリゴンの線の色
    org.geotools.styling.Stroke stroke1 = sf.createStroke(
      ff.literal(new Color(0x59, 0x58, 0x55)),
      ff.literal(1)
    );
    // ポリゴンの塗りつぶし色
    org.geotools.styling.Fill fill1 = sf.createFill(
      ff.literal(new Color(0xD2, 0xDB, 0xD5))
    );
    PolygonSymbolizer sym1 = sf.createPolygonSymbolizer(stroke1, fill1, null);

    // フィルタに一致する場合のルールを作成
    Rule rule1 = sf.createRule();
    rule1.symbolizers().add(sym1);
    rule1.setFilter(filter);
    Rule rules[] = {rule1};
    FeatureTypeStyle fts = sf.createFeatureTypeStyle(rules);
    Style style1 = sf.createStyle();
    style1.featureTypeStyles().add(fts);

    map.addLayer(new FeatureLayer(sfc, style1));

    // --------------------------------------------------
    // 別のレイヤーを作成
    // ポイント用のタイプを作成
    SimpleFeatureType pointtype = DataUtilities.createType(
      "Location", 
      "the_geom:Point," + 
      "name:String"
    );
    SimpleFeatureBuilder sfb = new SimpleFeatureBuilder(pointtype);

    // 金沢を示すポイントを作成
    // 経度
    double longitude = 136.27166748046875d;
    // 緯度
    double latitude = 36.578041001498704d;
    GeometryFactory gf = JTSFactoryFinder.getGeometryFactory(null);
    com.vividsolutions.jts.geom.Point point = gf.createPoint(new Coordinate(longitude, latitude));
    sfb.add(point);
    sfb.add("kanazawa");

    SimpleFeatureCollection col = FeatureCollections.newCollection();
    SimpleFeature feature1 = sfb.buildFeature(null);
    col.add(feature1);

    // マーカーの線
    org.geotools.styling.Stroke stroke2 = sf.createStroke(
      ff.literal(new Color(0xC8, 0x46, 0x63)),
      ff.literal(3)
    );
    // マーカーの塗りつぶし色
    org.geotools.styling.Fill fill2 = sf.createFill(ff.literal(new Color(0xff, 0xC8, 0x61)));

    // マーカーの形
    Mark mark = sf.getStarMark();
    mark.setFill(fill2);
    mark.setStroke(stroke2);

    Graphic graphic = sf.createDefaultGraphic();
    graphic.graphicalSymbols().clear();
    graphic.graphicalSymbols().add(mark);
    graphic.setSize(ff.literal(20));

    GeometryDescriptor geomDesc = fs.getSchema().getGeometryDescriptor();
    String geometryAttributeName = geomDesc.getLocalName();
    PointSymbolizer sym2 = sf.createPointSymbolizer(graphic, geometryAttributeName);

    Rule rule2 = sf.createRule();
    rule2.symbolizers().add(sym2);
    Rule rules2[] = {rule2};
    FeatureTypeStyle fts2 = sf.createFeatureTypeStyle(rules2);
    Style style2 = sf.createStyle();
    style2.featureTypeStyles().add(fts2);
    // レイヤーとして追加
    map.addLayer(new FeatureLayer(col, style2));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    ReferencedEnvelope bounds = map.getLayerBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("kanazawa.jpg"));
  }
}

出力画像

GeoToolsで指定した地点にラベルを描画する

2012-01-13T02:03:00.000-08:00

GeoToolsで指定した地点にラベルを描画するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import org.geotools.data.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.feature.*;
import org.geotools.feature.simple.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.feature.type.*;
import org.opengis.referencing.crs.*;
import com.vividsolutions.jts.geom.*;

public class Geotools8
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();
    // 国の名前でフィルタリング
    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    Filter filter = ff.equals(
      ff.property("NAME"),
      ff.literal("JAPAN")
    );
    SimpleFeatureCollection sfc = fs.getFeatures(filter);

    SimpleFeatureType schema = sfc.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    //スタイルを作成
    StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
    // ポリゴンの線の色
    org.geotools.styling.Stroke stroke1 = sf.createStroke(
      ff.literal(new Color(0x59, 0x58, 0x55)),
      ff.literal(1)
    );
    // ポリゴンの塗りつぶし色
    org.geotools.styling.Fill fill1 = sf.createFill(
      ff.literal(new Color(0xD2, 0xDB, 0xD5))
    );
    PolygonSymbolizer sym1 = sf.createPolygonSymbolizer(
      stroke1, fill1, null);

    // フィルタに一致する場合のルールを作成
    Rule rule1 = sf.createRule();
    rule1.symbolizers().add(sym1);
    rule1.setFilter(filter);
    Rule rules[] = {rule1};
    FeatureTypeStyle fts = sf.createFeatureTypeStyle(rules);
    Style style1 = sf.createStyle();
    style1.featureTypeStyles().add(fts);

    map.addLayer(new FeatureLayer(sfc, style1));

    // --------------------------------------------------
    // 別のレイヤーを作成
    // ポイント用のタイプを作成
    SimpleFeatureType pointtype = DataUtilities.createType(
      "Location", 
      "the_geom:Point," + 
      "name:String"
    );
    SimpleFeatureBuilder sfb = new SimpleFeatureBuilder(pointtype);

    // 東京を示すポイントを作成
    // 経度
    double longitude = 139.6917064d;
    // 緯度
    double latitude = 35.6894875d;
    GeometryFactory gf = JTSFactoryFinder.getGeometryFactory(null);
    com.vividsolutions.jts.geom.Point point = gf.createPoint(
      new Coordinate(longitude, latitude));
    sfb.add(point);
    sfb.add("tokyo");

    SimpleFeatureCollection col = FeatureCollections.newCollection();
    SimpleFeature feature1 = sfb.buildFeature(null);
    col.add(feature1);

    // ラベル作成
    Fill fill2 = sf.createFill(ff.literal(new Color(0x28, 0x76, 0xcf)));
    TextSymbolizer sym2 = sf.createTextSymbolizer();
    sym2.setFont(sf.createFont(
      ff.literal("ＭＳ ゴシック"), 
      ff.literal(false), 
      ff.literal(false), 
      ff.literal(14))
    );
    sym2.setLabel(ff.literal("東京"));
    sym2.setFill(fill2);
    sym2.setHalo(sf.createHalo(
      sf.createFill(ff.literal(Color.WHITE)), 
      ff.literal(2))
    );

    Rule rule2 = sf.createRule();
    rule2.symbolizers().add(sym2);
    Rule rules2[] = {rule2};
    FeatureTypeStyle fts2 = sf.createFeatureTypeStyle(rules2);
    Style style2 = sf.createStyle();
    style2.featureTypeStyles().add(fts2);
    // レイヤーとして追加
    map.addLayer(new FeatureLayer(col, style2));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    ReferencedEnvelope bounds = map.getLayerBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("tokyo_label.jpg"));
  }
}

出力画像

GeoToolsで指定した地点に丸マークを描画する

2012-01-11T00:58:00.000-08:00

GeoToolsで指定した地点に丸マークを描画するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import org.geotools.data.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.feature.*;
import org.geotools.feature.simple.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.feature.type.*;
import org.opengis.referencing.crs.*;
import com.vividsolutions.jts.geom.*;

public class Geotools7
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();
    // 国の名前でフィルタリング
    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    Filter filter = ff.equals(
      ff.property("NAME"),
      ff.literal("JAPAN")
    );
    SimpleFeatureCollection sfc = fs.getFeatures(filter);

    SimpleFeatureType schema = sfc.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    //スタイルを作成
    StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
    // ポリゴンの線の色
    org.geotools.styling.Stroke stroke1 = sf.createStroke(
      ff.literal(new Color(0x59, 0x58, 0x55)),
      ff.literal(1)
    );
    // ポリゴンの塗りつぶし色
    org.geotools.styling.Fill fill1 = sf.createFill(
      ff.literal(new Color(0xD2, 0xDB, 0xD5))
    );
    PolygonSymbolizer sym1 = sf.createPolygonSymbolizer(stroke1, fill1, null);

    // フィルタに一致する場合のルールを作成
    Rule rule1 = sf.createRule();
    rule1.symbolizers().add(sym1);
    rule1.setFilter(filter);
    Rule rules[] = {rule1};
    FeatureTypeStyle fts = sf.createFeatureTypeStyle(rules);
    Style style1 = sf.createStyle();
    style1.featureTypeStyles().add(fts);

    map.addLayer(new FeatureLayer(sfc, style1));

    // --------------------------------------------------
    // 別のレイヤーを作成
    // ポイント用のタイプを作成
    SimpleFeatureType pointtype = DataUtilities.createType(
      "Location", 
      "the_geom:Point," + 
      "name:String"
    );
    SimpleFeatureBuilder sfb = new SimpleFeatureBuilder(pointtype);

    // 東京を示すポイントを作成
    // 経度
    double longitude = 139.6917064d;
    // 緯度
    double latitude = 35.6894875d;
    GeometryFactory gf = JTSFactoryFinder.getGeometryFactory(null);
    com.vividsolutions.jts.geom.Point point = gf.createPoint(new Coordinate(longitude, latitude));
    sfb.add(point);
    sfb.add("tokyo");

    SimpleFeatureCollection col = FeatureCollections.newCollection();
    SimpleFeature feature1 = sfb.buildFeature(null);
    col.add(feature1);

    // マーカーの線
    org.geotools.styling.Stroke stroke2 = sf.createStroke(
      ff.literal(new Color(0xC8, 0x46, 0x63)),
      ff.literal(3)
    );
    // マーカーの塗りつぶし色
    org.geotools.styling.Fill fill2 = sf.createFill(ff.literal(new Color(0xff, 0xC8, 0x61)));

    // マーカーの形
    Mark mark = sf.getCircleMark();
    mark.setFill(fill2);
    mark.setStroke(stroke2);

    Graphic graphic = sf.createDefaultGraphic();
    graphic.graphicalSymbols().clear();
    graphic.graphicalSymbols().add(mark);
    graphic.setSize(ff.literal(10));

    GeometryDescriptor geomDesc = fs.getSchema().getGeometryDescriptor();
    String geometryAttributeName = geomDesc.getLocalName();
    PointSymbolizer sym2 = sf.createPointSymbolizer(graphic, geometryAttributeName);

    Rule rule2 = sf.createRule();
    rule2.symbolizers().add(sym2);
    Rule rules2[] = {rule2};
    FeatureTypeStyle fts2 = sf.createFeatureTypeStyle(rules2);
    Style style2 = sf.createStyle();
    style2.featureTypeStyles().add(fts2);
    // レイヤーとして追加
    map.addLayer(new FeatureLayer(col, style2));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    ReferencedEnvelope bounds = map.getLayerBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("tokyo.jpg"));
  }
}

出力画像

GeoToolsで指定の国の色を変更する

2012-01-09T23:55:00.000-08:00

GeoToolsで指定の国の色を変更するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.referencing.crs.*;

public class Geotools6
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();

    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    SimpleFeatureType schema = fs.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    //スタイルを作成
    StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
    // ポリゴンの線の色1
    org.geotools.styling.Stroke stroke1 = sf.createStroke(
      ff.literal(new Color(10, 20, 207)),
      ff.literal(1)
    );
    // ポリゴンの線の色2
    org.geotools.styling.Stroke stroke2 = sf.createStroke(
      ff.literal(new Color(47, 184, 27)),
      ff.literal(1)
    );
    // ポリゴンの塗りつぶし色1
    org.geotools.styling.Fill fill1 = sf.createFill(
      ff.literal(new Color(65, 195, 224))
    );
    // ポリゴンの塗りつぶし色2
    org.geotools.styling.Fill fill2 = sf.createFill(
      ff.literal(new Color(133, 255, 7))
    );
    PolygonSymbolizer sym1 = sf.createPolygonSymbolizer(stroke1, fill1, null);
    PolygonSymbolizer sym2 = sf.createPolygonSymbolizer(stroke2, fill2, null);

    // フィルタを作成
    Filter filter = ff.equals(
      ff.property("NAME"),
      ff.literal("AUSTRALIA")
    );
    // フィルタに一致する場合のルールを作成
    Rule rule1 = sf.createRule();
    rule1.symbolizers().add(sym1);
    rule1.setFilter(filter);

    Rule rule2 = sf.createRule();
    rule2.symbolizers().add(sym2);
    rule2.setElseFilter(true);

    Rule rules[] = {rule1, rule2};
    FeatureTypeStyle fts = sf.createFeatureTypeStyle(rules);
    Style style = sf.createStyle();
    style.featureTypeStyles().add(fts);

    map.addLayer(new FeatureLayer(fs, style));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    ReferencedEnvelope bounds = map.getMaxBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("fill_with_rule.jpg"));
  }
}

出力画像

GeoToolsでポリゴンの色を指定する

2012-01-07T23:42:00.000-08:00

GeoToolsでポリゴンの色を指定するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.referencing.crs.*;

public class Geotools5
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();

    // 国の名前でフィルタリング
    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    Filter filter = ff.equals(
      ff.property("NAME"),
      ff.literal("JAPAN")
    );
    SimpleFeatureCollection sfc = fs.getFeatures(filter);

    SimpleFeatureType schema = sfc.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    //スタイルを作成
    StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
    // ポリゴンの線の色
    org.geotools.styling.Stroke stroke = sf.createStroke(
      ff.literal(new Color(47, 184, 27)),
      ff.literal(2)
    );
    // ポリゴンの塗りつぶし色
    org.geotools.styling.Fill fill = sf.createFill(
      ff.literal(new Color(133, 255, 7))
    );
    PolygonSymbolizer sym = sf.createPolygonSymbolizer(stroke, fill, null);

    Rule rule = sf.createRule();
    rule.symbolizers().add(sym);
    Rule rules[] = {rule};
    FeatureTypeStyle fts = sf.createFeatureTypeStyle(rules);
    Style style = sf.createStyle();
    style.featureTypeStyles().add(fts);

    map.addLayer(new FeatureLayer(sfc, style));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    ReferencedEnvelope bounds = map.getMaxBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("polygon.jpg"));
  }
}

出力画像

GeoToolsで世界地図からOR条件で複数国をフィルタリングして描画する

2012-01-05T23:12:00.000-08:00

GeoToolsで世界地図からOR条件で複数国をフィルタリングして描画するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import java.util.*;
import javax.imageio.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.referencing.crs.*;

public class Geotools3
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();

    // OR条件で複数の国をフィルタリング
    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    java.util.List<Filter> filters = new ArrayList<Filter>();
    filters.add(ff.equals(
      ff.property("NAME"),
      ff.literal("UNITED STATES")
    ));
    filters.add(ff.equals(
      ff.property("NAME"),
      ff.literal("CANADA")
    ));
    filters.add(ff.equals(
      ff.property("NAME"),
      ff.literal("JAPAN")
    ));
    Filter countries = ff.or(filters);
    SimpleFeatureCollection sfc = fs.getFeatures(countries);

    SimpleFeatureType schema = sfc.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    // スタイルを作成
    Style style = SLD.createSimpleStyle(schema);
    map.addLayer(new FeatureLayer(sfc, style));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    ReferencedEnvelope bounds = map.getMaxBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("countries.jpg"));
  }
}

出力画像

GeoToolsで世界地図から指定の国をフィルタリングして描画する

2012-01-03T22:50:00.000-08:00

GeoToolsで世界地図から指定の国をフィルタリングして描画するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.referencing.crs.*;

public class Geotools2
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();

    // 国の名前でフィルタリング
    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    Filter filter = ff.equals(
      ff.property("NAME"),
      ff.literal("JAPAN")
    );
    SimpleFeatureCollection sfc = fs.getFeatures(filter);

    SimpleFeatureType schema = sfc.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    // スタイルを作成
    Style style = SLD.createSimpleStyle(schema);
    map.addLayer(new FeatureLayer(sfc, style));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    ReferencedEnvelope bounds = map.getMaxBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("japan.jpg"));
  }
}

出力画像

GeoToolsで指定した地点に四角マークを描画する

2012-01-02T18:30:00.000-08:00

GeoToolsで指定した地点に四角マークを描画するには、以下のコードを実行します。

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import org.geotools.data.*;
import org.geotools.data.shapefile.*;
import org.geotools.data.simple.*;
import org.opengis.filter.*;
import org.geotools.factory.*;
import org.geotools.feature.*;
import org.geotools.feature.simple.*;
import org.geotools.geometry.jts.*;
import org.geotools.map.*;
import org.geotools.renderer.lite.*;
import org.geotools.styling.*;
import org.opengis.feature.simple.*;
import org.opengis.feature.type.*;
import org.opengis.referencing.crs.*;
import com.vividsolutions.jts.geom.*;

public class Geotools13
{
  public static void main(String args[])
    throws Exception
  {
    URL url = new URL("file://C:/share/geotools/world.shp");
    ShapefileDataStore shapefile = new ShapefileDataStore(url);

    SimpleFeatureSource fs = shapefile.getFeatureSource();
    // 国の名前でフィルタリング
    FilterFactory ff = CommonFactoryFinder.getFilterFactory2(null);
    Filter filter = ff.equals(
      ff.property("NAME"),
      ff.literal("JAPAN")
    );
    SimpleFeatureCollection sfc = fs.getFeatures(filter);

    SimpleFeatureType schema = sfc.getSchema();
    CoordinateReferenceSystem crs = 
      schema.getGeometryDescriptor().getCoordinateReferenceSystem();
    MapLayer layers[] = {};
    DefaultMapContext map = new DefaultMapContext(layers, crs);

    //スタイルを作成
    StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
    // ポリゴンの線の色
    org.geotools.styling.Stroke stroke1 = sf.createStroke(
      ff.literal(new Color(0x59, 0x58, 0x55)),
      ff.literal(1)
    );
    // ポリゴンの塗りつぶし色
    org.geotools.styling.Fill fill1 = sf.createFill(
      ff.literal(new Color(0xD2, 0xDB, 0xD5))
    );
    PolygonSymbolizer sym1 = sf.createPolygonSymbolizer(stroke1, fill1, null);

    // フィルタに一致する場合のルールを作成
    Rule rule1 = sf.createRule();
    rule1.symbolizers().add(sym1);
    rule1.setFilter(filter);
    Rule rules[] = {rule1};
    FeatureTypeStyle fts = sf.createFeatureTypeStyle(rules);
    Style style1 = sf.createStyle();
    style1.featureTypeStyles().add(fts);

    map.addLayer(new FeatureLayer(sfc, style1));

    // --------------------------------------------------
    // 別のレイヤーを作成
    // ポイント用のタイプを作成
    SimpleFeatureType pointtype = DataUtilities.createType(
      "Location", 
      "the_geom:Point," + 
      "name:String"
    );
    SimpleFeatureBuilder sfb = new SimpleFeatureBuilder(pointtype);

    // 札幌を示すポイントを作成
    // 経度
    double longitude = 140.0811767578125d;
    // 緯度
    double latitude = 42.90816007196054d;
    GeometryFactory gf = JTSFactoryFinder.getGeometryFactory(null);
    com.vividsolutions.jts.geom.Point point = gf.createPoint(new Coordinate(longitude, latitude));
    sfb.add(point);
    sfb.add("sapporo");

    SimpleFeatureCollection col = FeatureCollections.newCollection();
    SimpleFeature feature1 = sfb.buildFeature(null);
    col.add(feature1);

    // マーカーの線
    org.geotools.styling.Stroke stroke2 = sf.createStroke(
      ff.literal(new Color(0xC8, 0x46, 0x63)),
      ff.literal(3)
    );
    // マーカーの塗りつぶし色
    org.geotools.styling.Fill fill2 = sf.createFill(ff.literal(new Color(0xff, 0xC8, 0x61)));

    // マーカーの形
    Mark mark = sf.getSquareMark();
    mark.setFill(fill2);
    mark.setStroke(stroke2);

    Graphic graphic = sf.createDefaultGraphic();
    graphic.graphicalSymbols().clear();
    graphic.graphicalSymbols().add(mark);
    graphic.setSize(ff.literal(18));

    GeometryDescriptor geomDesc = fs.getSchema().getGeometryDescriptor();
    String geometryAttributeName = geomDesc.getLocalName();
    PointSymbolizer sym2 = sf.createPointSymbolizer(graphic, geometryAttributeName);

    Rule rule2 = sf.createRule();
    rule2.symbolizers().add(sym2);
    Rule rules2[] = {rule2};
    FeatureTypeStyle fts2 = sf.createFeatureTypeStyle(rules2);
    Style style2 = sf.createStyle();
    style2.featureTypeStyles().add(fts2);
    // レイヤーとして追加
    map.addLayer(new FeatureLayer(col, style2));

    // レンダリング
    StreamingRenderer renderer = new StreamingRenderer();
    renderer.setContext(map);

    int width = 400;
    ReferencedEnvelope bounds = map.getLayerBounds();
    Rectangle rect = new Rectangle(0, 0, width, 
      (int)(width * bounds.getHeight() / bounds.getWidth()));

    BufferedImage image = new BufferedImage((int)rect.width, 
      (int)rect.height, 
      BufferedImage.TYPE_INT_RGB);
    Graphics2D gr = image.createGraphics();
    gr.setPaint(Color.WHITE);
    gr.fill(rect);
    renderer.paint(gr, rect, bounds);

    ImageIO.write(image, "jpeg", new File("sapporo.jpg"));
  }
}

出力画像