[OpenLayers-Users] How to add text label and image (maybe a freely editable box?) to a vector layer?

[Jürgen Dankoweit]

Hello Manuel,


Am 11.04.2013 08:54, schrieb Manuel Reimer:
> Manuel Reimer <manuel.spam at ...> writes:
>> what I have is a vector layer which shows a multipolygon line. I want to
>> have some description text (freely positioned) on this layer.
> 
> Hello,
> 
> I tried out some things and it seems to be impossible to use "addFeatures"
> if the Layer is directly connected to some external HTTP URL. This is my
> current code:

did you try using a stylemap in your code?
Something like this:
var styleMap_Gebiet = new OpenLayers.StyleMap({
 'default':{
  label : "${text}",
  ...
	´
 },
 'select':{
  label : "${text}",
 }
});

Look at my code here:
http://www.dankoweit.de/Wetterdienste/hp_wetterdienste_auswahlkarte.html

This is a map which uses polygons to draw the selectable areas. Look at
lines 968ff in the source code http://www.dankoweit.de/Skripte/metarkarte.js

This File generates the following map for a special region:
http://www.dankoweit.de/cgi-bin/metar_karte.pl?geo=1&typ=metar

> 
> var layer = new OpenLayers.Layer.Vector("My Layer Name", {
>   visibility: true,
>   strategies: [new OpenLayers.Strategy.Fixed()],
>   protocol: new OpenLayers.Protocol.HTTP({
>     url: "mydb.cgi",
>     format: new OpenLayers.Format.OSM()
>   }),
>   projection: map.displayProjection,
>   style: {strokeColor: "red", strokeWidth: 5, strokeOpacity: 0.5}
> });
> map.addLayer(layer);
> 
> Can someone please help me to rewrite this to do the following:
> 
> - Fetch the features from my external file, first.
> - Then add those features using "addFeatures" to my layer.

I have done this. It is not very difficult but tricky :)
Here too look at the code between line 426 and 668.


Best regards

Juergen

> 
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-- 
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