Hello
I have tried to apply some Rule Based Style from
http://docs.openlayers.org/library/feature_styling.html and
http://openlayers.org/dev/examples/, but the default SLD style defined for
the layer remains. Any hints? Below some code with two techniques tried. The
layer definition code at hand seems to have has a fifth parameter
{isBaseLayer: 'true', opacity: '0.5'}, but
http://dev.openlayers.org/docs/files/OpenLayers/Layer/WMS-js.html#OpenLayers.Layer.WMS.OpenLayers.Layer.WMSlists
only four...? In any case, with or without the line
styleMap: new OpenLayers.StyleMap(parcelstyle),
the map looks just the same.
var parcelstyle = new OpenLayers.Style(
// the first argument is a base symbolizer
// all other symbolizers in rules will extend this one
{
strokeWidth: 0.2, // from Parcels_for_Certificate.sld
strokeColor: '#000000',
sfillColor: "#FF5500",
//fillOpacity: 0.5,
label: "${Parcel_No}", // label will be this attribute value
//pointRadius: 0,
fontColor: '#000000',
fontOpacity: 0.8,
fontSize: 12, // from Parcels_for_Certificate.sld
fontFamily: "verdana" //"Courier New, monospace", or "Arial"
},
// the second argument will include all rules
{
rules: [
new OpenLayers.Rule({
// a rule contains an optional filter
filter: new OpenLayers.Filter.Comparison({
type: OpenLayers.Filter.Comparison.EQUAL_TO,
property: "PID", // the "PID" feature attribute
value: 1121 //1691 is DoSUP example, 1121 its
neighbour.
}),
// If a feature matches the above filter, use this
symbolizer hash:
symbolizer: {
strokeWidth: 2.0,
strokeColor: '#CC0039', // from
Parcels_for_Certificate.sld
fontWeight: "bold",
fontStyle: "italic"
}
})
] //Only one rule, no "otherwise" option given now
}
);
var parcelstyle2 = new OpenLayers.Style();
var ruleLow = new OpenLayers.Rule({
filter: new OpenLayers.Filter.Comparison({
type: OpenLayers.Filter.Comparison.LESS_THAN,
property: "PID",
value: 1600,
}),
symbolizer: {pointRadius: 10, fillColor: "green",
fillOpacity: 0.5, strokeColor: "black"}
});
var ruleHigh = new OpenLayers.Rule({
filter: new OpenLayers.Filter.Comparison({
type: OpenLayers.Filter.Comparison.GREATER_THAN_OR_EQUAL_TO,
property: "PID",
value: 1600,
}),
symbolizer: {pointRadius: 20, fillColor: "red",
fillOpacity: 0.7, strokeColor: "yellow"}
});
parcelstyle2.addRules([ruleLow, ruleHigh]);
//------------------ LAYER DEFINITIONS
----------------------------------------------------
var parcels = new OpenLayers.Layer.WMS("Parcels","
http://dbs2:8080/geoserver/wms"; ,
{bbox: '518921.40245480876,9310002.394840041,528518.0741880973,
9328387.88151105',
layers: 'MPCADASTRE:Parcels_for_Certificate',
srs: 'EPSG:21037',
transparent:'false',
//style: parcelstyle, //The rule-based style
format: 'image/jpeg'},
//Using 3x3 Geoserver metatiling seems to cause multiple labels for
polygons, using singletile instead
{singleTile: true,
ratio: 1,
maxExtent: bounds,
projection: "EPSG:21037",
styleMap: new OpenLayers.StyleMap(parcelstyle), //The rule-based
style used for a StyleMap. parcelstyle2 also tried here.
buffer: 0},
{isBaseLayer: 'true', opacity: '0.5'}); //This one as the base layer
now
Arto
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