Re: [OpenLayers-Users] Setting the color of a single vector

[Eric Lemoine]

On Tue, Aug 5, 2008 at 11:04 AM, Jani Patokallio [EMAIL PROTECTED] wrote:
 Greetings,

 A very simple question, probably with a very simple answer, but I'm
 having a devil of a time figuring it out...

 I have a PointTrack layer with a StyleMap attached to it.  The StyleMap
 says strokeColor: yellow, so when I draw vectors on the layer, they're
 yellow.  My question is, how do I specify that one (1) vector should
 *not* be yellow, but red?

 Feature.Vector has style objects as an optional argument, but I have no
 idea what style {Object} An optional style object is supposed to mean,
 and my guess at new Vector(point, {foo: bar}, {strokeColor: red})
 does nothing.

If you create a feature using:

feature = new OpenLayers.Feature.Vector(point, {foo: bar},
OpenLayers.Util.applyDefaults({strokeColor: red},
OpenLayers.Feature.Vector.style[default]);

that should work.

--
Eric
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Re: [OpenLayers-Users] Setting the color of a single vector

[Arnd Wippermann]

I use this code to change the style for selected features.

//selected features get the new style

function bunt()
{
var vlyr= opener.map.layers[opener.map.aktLayer];
//output=vlayer.name + ', isVector=' + vlayer.isVector;
if(vlyr.isVector==true);
{
var objFs = vlyr.selectedFeatures;

for(var i=0;iobjFs.length;i++)
{
var feature = objFs[i];

var obj = new opener.OpenLayers.Style();

obj.fillColor = blue;
obj.fillOpacity   = 0.5;
obj.strokeColor   = #00;
obj.strokeOpacity = 1;
obj.strokeWidth   = 6;
obj.strokeLinecap = 'round';
obj.pointRadius   = 2;

feature.style = obj;

vlyr.drawFeature(feature);
}
};
}
//bunt(); this way sets only the above style values

function BuntOnSelect()
{
var vlyr= map.layers[idx];
var objFs = vlyr.selectedFeatures;

var myStyle = OpenLayers.Util.extend({},
map.layers[idx].styleMap.styles[default].defaultStyle);

myStyle.strokeColor = #FF00FF;
//... other

for(var i=0;iobjFs.length;i++)
{   objFs[i].style = myStyle;
vlyr.drawFeature(objFs[i]);
}
}
BuntOnSelect(); //this way all style values are taken from the default of
the layer style and then you can change yours.

Look also:
http://www.nabble.com/Change-style-only-for-one-feature-on-a-layer-td1834918
0.html

Arnd Wippermann

-Ursprüngliche Nachricht-
Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im
Auftrag von Jani Patokallio
Gesendet: Dienstag, 5. August 2008 11:05
An: users@openlayers.org
Betreff: [OpenLayers-Users] Setting the color of a single vector

Greetings,

A very simple question, probably with a very simple answer, but I'm having a
devil of a time figuring it out...

I have a PointTrack layer with a StyleMap attached to it.  The StyleMap says
strokeColor: yellow, so when I draw vectors on the layer, they're yellow.
My question is, how do I specify that one (1) vector should
*not* be yellow, but red?

Feature.Vector has style objects as an optional argument, but I have no idea
what style {Object} An optional style object is supposed to mean, and my
guess at new Vector(point, {foo: bar}, {strokeColor: red}) 
does nothing.  Google searches dig up people extending the default style and
then defining a second, entirely separate layer, while
http://trac.openlayers.org/wiki/Styles goes straight off the deep end into
advanced rule-based styling, but all I want to do is draw one red line.
Help?

Cheers,
-jani

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