Java Examples for org.geotools.brewer.color.StyleGenerator

The following java examples will help you to understand the usage of org.geotools.brewer.color.StyleGenerator. These source code samples are taken from different open source projects.

Example 1

Project: geotools_trunk-master File: BrewerExamples.java View source code

void colorBrewerExample(SimpleFeatureCollection featureCollection) {
    // colorBrewerExample start
    // STEP 0 Set up Color Brewer
    ColorBrewer brewer = ColorBrewer.instance();
    // STEP 1 - call a classifier function to summarise your content
    FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2();
    PropertyName propteryExpression = ff.property("height");
    // classify into five categories
    Function classify = ff.function("Quantile", propteryExpression, ff.literal(5));
    Classifier groups = (Classifier) classify.evaluate(featureCollection);
    // STEP 2 - look up a predefined palette from color brewer
    String paletteName = "GrBu";
    Color[] colors = brewer.getPalette(paletteName).getColors(5);
    // STEP 3 - ask StyleGenerator to make a set of rules for the Classifier
    // assigning features the correct color based on height
    FeatureTypeStyle style = StyleGenerator.createFeatureTypeStyle(groups, propteryExpression, colors, "Generated FeatureTypeStyle for GreeBlue", featureCollection.getSchema().getGeometryDescriptor(), StyleGenerator.ELSEMODE_IGNORE, 0.95, null);
// colorBrewerExample end
}

Example 2

Project: geotools-master File: BrewerExamples.java View source code

void colorBrewerExample(SimpleFeatureCollection featureCollection) {
    // colorBrewerExample start
    // STEP 0 Set up Color Brewer
    ColorBrewer brewer = ColorBrewer.instance();
    // STEP 1 - call a classifier function to summarise your content
    FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2();
    PropertyName propteryExpression = ff.property("height");
    // classify into five categories
    Function classify = ff.function("Quantile", propteryExpression, ff.literal(5));
    Classifier groups = (Classifier) classify.evaluate(featureCollection);
    // STEP 2 - look up a predefined palette from color brewer
    String paletteName = "GrBu";
    Color[] colors = brewer.getPalette(paletteName).getColors(5);
    // STEP 3 - ask StyleGenerator to make a set of rules for the Classifier
    // assigning features the correct color based on height
    FeatureTypeStyle style = StyleGenerator.createFeatureTypeStyle(groups, propteryExpression, colors, "Generated FeatureTypeStyle for GreeBlue", featureCollection.getSchema().getGeometryDescriptor(), StyleGenerator.ELSEMODE_IGNORE, 0.95, null);
// colorBrewerExample end
}

Example 3

Project: geotools-old-master File: BrewerExamples.java View source code

void colorBrewerExample(SimpleFeatureCollection featureCollection) {
    // colorBrewerExample start
    // STEP 0 Set up Color Brewer
    ColorBrewer brewer = ColorBrewer.instance();
    // STEP 1 - call a classifier function to summarise your content
    FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2(null);
    PropertyName propteryExpression = ff.property("height");
    // classify into five categories
    Function classify = ff.function("Quantile", propteryExpression, ff.literal(5));
    Classifier groups = (Classifier) classify.evaluate(featureCollection);
    // STEP 2 - look up a predefined palette from color brewer
    String paletteName = "GrBu";
    Color[] colors = brewer.getPalette(paletteName).getColors(5);
    // STEP 3 - ask StyleGenerator to make a set of rules for the Classifier
    // assigning features the correct color based on height
    FeatureTypeStyle style = StyleGenerator.createFeatureTypeStyle(groups, propteryExpression, colors, "Generated FeatureTypeStyle for GreeBlue", featureCollection.getSchema().getGeometryDescriptor(), StyleGenerator.ELSEMODE_IGNORE, 0.95, null);
// colorBrewerExample end
}

Example 4

Project: geotools-cookbook-master File: BrewerExamples.java View source code

void colorBrewerExample(SimpleFeatureCollection featureCollection) {
    // colorBrewerExample start
    // STEP 0 Set up Color Brewer
    ColorBrewer brewer = ColorBrewer.instance();
    // STEP 1 - call a classifier function to summarise your content
    FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2();
    PropertyName propteryExpression = ff.property("height");
    // classify into five categories
    Function classify = ff.function("Quantile", propteryExpression, ff.literal(5));
    Classifier groups = (Classifier) classify.evaluate(featureCollection);
    // STEP 2 - look up a predefined palette from color brewer
    String paletteName = "GrBu";
    Color[] colors = brewer.getPalette(paletteName).getColors(5);
    // STEP 3 - ask StyleGenerator to make a set of rules for the Classifier
    // assigning features the correct color based on height
    FeatureTypeStyle style = StyleGenerator.createFeatureTypeStyle(groups, propteryExpression, colors, "Generated FeatureTypeStyle for GreeBlue", featureCollection.getSchema().getGeometryDescriptor(), StyleGenerator.ELSEMODE_IGNORE, 0.95, null);
// colorBrewerExample end
}