[mapserver-users] Re: How TO change color of a layer using mapscript(without editing mapfile)

[Sucharita Samuel]

 Hi Yatendra,

layer.close(); , here layer is the base layer. The code that I have provided
is used to colour features in the layer (You can change the entire layer
color also). The layer has many features, which can be retrieved using
shapeObj shape = layer.getFeature(shapeInd, -1);
"shapeInd" is the index of the shape.

This is the shape that i use to add into the temporary layer created
oTempLayer.addFeature(shape);
So, once I add the shape that I want to color to the temporary layer, I
close the base layer using layer.close();

I hope this helps.

Regards,
Sucharita

>


On Thu, May 8, 2008 at 11:09 AM, <yatendra.jaiswal at gmail.com> wrote:

> Dear Sucharita,
> I have one more question. U have used
> "oTempLayer.addFeature(shape);"
>
> How to get shape?
>
> Which layers shape are you talking about? Please clarify my doubt.
> I am newbie to asp.net mapserver.
> Thanks Regards
> Yatendra Jaiswal
>
> Sucharita Samuel wrote:
> >
> >  Hi Yatendra,
> >                   To change the colour of a layer, you can create a
> > temporary layer, assign the attributes (like color,outline color etc) and
> > then add the shape to your existing layer and redraw the map image..
> > The following code might help,
> >
> >  //*************Code for creating a temporary layer to be added onto the
> > existing map******
> >
> >                     layerObj oTempLayer = new layerObj(map);
> >                     oTempLayer.type = MS_LAYER_TYPE.MS_LAYER_POLYGON;
> >                     oTempLayer.status = 1;
> >                     classObj oTempClass = new classObj(oTempLayer);
> >                     labelObj oLabel = oTempClass.label;
> >                     oLabel.color.setRGB(0,0,0);
> >                     styleObj oStyle = new styleObj(oTempClass);
> >                     oStyle.outlinecolor.setRGB(100, 12, 12);
> >                     oStyle.color.setRGB(221, 160, 221);
> >                     oTempLayer.addFeature(shape);
> >                     layer.close();
> >                     oImg = map.draw();
> >                     int i= oTempLayer.draw(map, oImg);
> >
> >
> //*********************************************************************************
> >
> > Regards,
> > Sucharita
> >
> >
> > On Fri, May 2, 2008 at 12:18 PM, yatendra <yatendra.jaiswal at gmail.com>
> > wrote:
> >
> >>
> >> Hi
> >> Thanks for reply
> >> i tried this code but there is null reference in
> >> "$style->color->setRGB( 255, 0, 0 );
> >> $style->outlinecolor->setRGB( 255, 0, 0 );"
> >> this step....
> >> Please giude me...
> >> color of  a layer is not schanging
> >>
> >> Thanks Regards
> >>
> >>
> >> yatendra wrote:
> >> >
> >> > Hi friends,
> >> > I am using asp.net to develop application on mapserver.
> >> > I want to change layer color available in my mapfile.
> >> > Is it possible to change layer color without editing layer in mapfile?
> >> > What function do i need to use to do this?
> >> > Can i give unique value to each feature?
> >> > Is it also possible?
> >> > Please reply if any one know regarding this.
> >> > any idea will also be helpful to me...
> >> > Thanks regards
> >> >
> >>
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/How-TO-change-color-of-a-layer-using-mapscript%28without-editing-mapfile%29-tp16983974p16997022.html
> >> Sent from the Mapserver - User mailing list archive at Nabble.com.
> >>
> >> _______________________________________________
> >> mapserver-users mailing list
> >> mapserver-users at lists.osgeo.org
> >> http://lists.osgeo.org/mailman/listinfo/mapserver-users
> >>
> >
> > _______________________________________________
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> >
> >
> Quoted from:
>
> http://www.nabble.com/How-TO-change-color-of-a-layer-using-mapscript%28without-editing-mapfile%29-tp16983974p17100215.html
>
>
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