[OpenLayers-Users] zIndexing does not work

[Andreas Hocevar]

You have to configure your vector layer with the {rendererOptions:
{zIndexing: true}} option to make this work. Note that this setting will
make vector rendering significantly slower, so the advice to use separate
layers is a good one.

Andreas.
On Oct 12, 2011 9:39 PM, "Jürgen Dankoweit" <Juergen.Dankoweit at t-online.de>
wrote:

> Hello to the list,
>
> In a map I want to show cities that have actual weather data in
> foreground and cities that do not have actual data behind the other cities.
> After long time of googling I don't know why zIndexing in my code does
> not work.
>
> Many thanks for the answers
>
> Juergen
>
> Here are the code snippets:
>
> var z_Index = (data_cnt == 10 ? 1000 : -1000);
>
> vectorLayer_Stadt = new OpenLayers.Layer.Vector("Stadt", {
>  styleMap: styleMap_Stadt,
>  renderers: renderer,
>  rendererOptions: {
>   zIndexing: true
>  },
>  displayInLayerSwitcher: false
> });
>
>
> First try:
> ==========
> var styleMap_Stadt = new OpenLayers.StyleMap({'default':{
>  label : "\${text}",
>  fontColor: '\${fcolor}',
>  fontSize: "14px",
>  fontFamily: "Gentium",
>  fontWeight: "bold",
>  labelAlign: "cm",
>  labelXOffset: 0,
>  labelYOffset: 0,
>  graphicZIndex: "${zIndex}"
> }});
>
> point = new OpenLayers.Geometry.Point(lonLat.lon, lonLat.lat);
> point.style = {
>  graphicZIndex: z_Index
> };
>
> pointFeature_Stadt = new OpenLayers.Feature.Vector(point);
>  pointFeature_Stadt.attributes =
>  {text: stadt, fcolor: text_color};
>  vectorLayer_Stadt.addFeatures([pointFeature_Stadt]);
>
> Result:
> =======
> No changes in the zOrder
>
> Second try:
> ===========
>
> var styleMap_Stadt = new OpenLayers.StyleMap({'default':{
>  label : "\${text}",
>  fontColor: '\${fcolor}',
>  fontSize: "14px",
>  fontFamily: "Gentium",
>  fontWeight: "bold",
>  labelAlign: "cm",
>  labelXOffset: 0,
>  labelYOffset: 0,
> }});
>
>
> pointFeature_Stadt = new OpenLayers.Feature.Vector(point);
>  pointFeature_Stadt.attributes =
>  {text: stadt, fcolor: text_color, zIndex = z_Index};
>  vectorLayer_Stadt.addFeatures([pointFeature_Stadt]);
>
> Result:
> =======
> No changes in the zOrder
>
>
> --
> Meine stets unfertige Homepage: www.dankoweit.de
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