Difference between revisions of "Beanshell:Set an attribute fore every feature of a Layer"
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(Created page with 'This script will add 1.0 to the "z" attribute of every feature in layer "elevation". It is assumed that "z" is of type DOUBLE. A ''java.lang.IllegalArgumentException'' will be t…') |
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FeatureSchema schema = layer.getFeatureCollectionWrapper().getFeatureSchema(); | FeatureSchema schema = layer.getFeatureCollectionWrapper().getFeatureSchema(); | ||
int zIndex = schema.getAttributeIndex("z"); | int zIndex = schema.getAttributeIndex("z"); | ||
Latest revision as of 01:55, 12 October 2009
This script will add 1.0 to the "z" attribute of every feature in layer "elevation". It is assumed that "z" is of type DOUBLE.
A java.lang.IllegalArgumentException will be thrown if attribute "z" is not found in layer "elevation".
{
import com.vividsolutions.jump.workbench.model.Layer;
Layer layer = wc.getLayerManager().getLayer("elevation");
if (layer == null) {
System.err.println ("layer not found");
return;
}
FeatureSchema schema = layer.getFeatureCollectionWrapper().getFeatureSchema();
int zIndex = schema.getAttributeIndex("z");
if ( schema.getAttributeType(zIndex) != AttributeType.DOUBLE ) {
System.err.println ("attribute 'z' not of type DOUBLE");
return;
}
// Loop for each object in layer
Iterator iter =layer.getFeatureCollectionWrapper().iterator();
while (iter.hasNext()) {
BasicFeature f = (BasicFeature)iter.next();
Double d = f.getAttribute(zIndex);
f.setAttribute(zIndex, new Double(d.doubleValue() + 1.0));
}
}