OpenLayers create marker (feature with icon) from WKT

Question

I have a point object WKT. Like this: POINT (25.04568 48.221548). Also I have an icon in my project folder.

My goal is to show on a map an icon that represents a feature. Can it be just a normal OpenLayers feature (if yes, then how can I define that it should represent and icon) or do I need to create an OpenLayers marker (somehow create LonLat from WKT)?

• whuber: I have tried to fix typos and grammar to make sense of the title and the question but I just could not understand your first parenthetical remark "if yes,...." Could you please edit it to make it meaningful?
• Dmitri: edited, it is better?

Answer 1

If you want to change icons for all objects on map, you can change the style. For example:

testLayer = new OpenLayers.Layer.Vector("testLayer", {
 rendererOptions: { zIndexing: true },
 styleMap: new OpenLayers.StyleMap({
 "default": new OpenLayers.Style({
 externalGraphic: "../../pics/icon1.png",
 graphicWidth:32,
 graphicHeight:34,
 graphicXOffset:-10,
 graphicYOffset:-34 ,
 graphicZIndex: 1
 }, 
 OpenLayers.Feature.Vector.style["default"]),
 "select": new OpenLayers.Style({
 externalGraphic: "../../pics/icon2.png",
 graphicWidth:36,
 graphicHeight:38,
 graphicXOffset:-12,
 graphicYOffset:-38,
 graphicZIndex: 1000
 })
 })

If you want to set icon for one object, you can use OpenLayers.Marker. But it is not recommended. For example:

 function addNewMarkers() {
 ...
 var position = map.getLonLatFromPixel(e.xy);
 var size = new OpenLayers.Size(21,25);
 var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
 var icon = new OpenLayers.Icon('OpenLayers-2.12/img/marker-gold.png', size, offset);
 var markersLayer = map.getLayer('Markers');
 var myTestMarker = new OpenLayers.Marker(position,icon);
 ...
 markersLayer.addMarker(myTestMarker);
 }