HOW TO
Instructions provided describe how to use ValueMapLabelRenderer in the ArcIMS Java Viewer object model.
Code:
function setValueLabelRenderer(){
var mapApplet=parent.mapFrame.document.IMSMap;
var layer=mapApplet.getSelectedLayer()
if (layer==null) {
alert('No Layer is active!')
return
}
//create a valuemap label renderer and set the value field
var labelRenderer=mapApplet.createRenderer('VALUE_LABEL_RENDERER')
labelRenderer.setField(layer,'STATE_NAME');
//call setFields method to specify the collection of label fields
var col = mapApplet.createCollection();
col.addStringElement('STATE_NAME');
labelRenderer.setSeparator(':');
labelRenderer.setFields(layer,col);
// create a label symbol object
var labelSymbol = mapApplet.createSymbol('TEXT_SYMBOL');
// set the label symbol object’s display properties
var newColor1 = mapApplet.createColor(255,0,0);
labelSymbol.setFont("Arial",10);
labelSymbol.setAntialiasing("true")
labelSymbol.setFontColor(newColor1);
labelSymbol.setTransparency(1.0);
//create a defaultsymbol for non-matching values
var defaultLabelSymbol=mapApplet.createSymbol('TEXT_SYMBOL')
defaultLabelSymbol.setTransparency(0.0);
//assign renderer to unique values
labelRenderer.setSymbolForUniqueValue(labelSymbol,layer,'STATE_NAME','California');
labelRenderer.setSymbolForUniqueValue(labelSymbol,layer,'STATE_NAME','Oregon');
labelRenderer.setSymbolForUniqueValue(labelSymbol,layer,'STATE_NAME','Nevada');
//assign the default symbol
labelRenderer.setDefaultSymbol(defaultLabelSymbol);
//set ValueMapLabelRenderer to the layer
mapApplet.setLayerLabelRenderer(layer, labelRenderer);
//redraw the map to apply the renderer changes
mapApplet.redraw();
}
Article ID:000006043
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