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is this the minimal code to render a shapefile with geotools?
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import java.awt.Graphics2D; | |
import java.awt.Rectangle; | |
import java.awt.image.BufferedImage; | |
import java.io.File; | |
import java.net.URL; | |
import javax.imageio.ImageIO; | |
import org.geotools.data.FeatureSource; | |
import org.geotools.data.shapefile.ShapefileDataStore; | |
import org.geotools.factory.CommonFactoryFinder; | |
import org.geotools.geometry.jts.ReferencedEnvelope; | |
import org.geotools.map.DefaultMapContext; | |
import org.geotools.map.DefaultMapLayer; | |
import org.geotools.map.MapContext; | |
import org.geotools.map.MapLayer; | |
import org.geotools.renderer.lite.StreamingRenderer; | |
import org.geotools.styling.SLDParser; | |
import org.geotools.styling.Style; | |
import org.geotools.styling.StyleFactory; | |
import org.opengis.feature.simple.SimpleFeature; | |
import org.opengis.feature.simple.SimpleFeatureType; | |
/** | |
* Hello world! | |
* | |
*/ | |
public class App { | |
public static void main(String[] args) throws Exception { | |
StyleFactory styleFactory = CommonFactoryFinder.getStyleFactory(null); | |
SLDParser parser = new SLDParser(styleFactory, new URL("file:///home/dwins/Projects/geoserver/data/release/styles/popshade.sld")); | |
Style style = parser.readXML()[0]; | |
ShapefileDataStore shapefile = | |
new ShapefileDataStore(new URL("file:///home/dwins/Projects/geoserver/data/release/data/shapefiles/states.shp")); | |
FeatureSource<SimpleFeatureType, SimpleFeature> features = | |
shapefile.getFeatureSource(shapefile.getTypeNames()[0]); | |
MapContext context = new DefaultMapContext(new MapLayer[]{ | |
new DefaultMapLayer(features, style) | |
}); | |
BufferedImage image = new BufferedImage(300, 300, BufferedImage.TYPE_INT_ARGB); | |
Graphics2D graphics = image.createGraphics(); | |
Rectangle screenArea = new Rectangle(0, 0, 300, 300); | |
ReferencedEnvelope mapArea = features.getBounds(); | |
StreamingRenderer renderer = new StreamingRenderer(); | |
renderer.setContext(context); | |
renderer.paint(graphics, screenArea, mapArea); | |
ImageIO.write(image, "png", new File("/home/dwins/states.png")); | |
} | |
} |
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