[mapserver-users] changing rendered color of layer dynamically?

[Subha Ramakrishnan]

The solution didn't work for me.
This is my url:
"http://localhost/cgi-bin/mapserv?MAP=india_states.map&TRANSPARENT=true&LAYERS=india_states&map.layer[india_states].class[ANDHRA%20PRADESH].style[0].color+255+0+0&FORMAT=image%2Fpng&
PROJECTION=EPSG%3A4326&REPROJECT=false&UNITS=m&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage
&SRS=EPSG%3A900913&BBOX=8305796.970622223,1252337.1900454492,9558141.241822222,2504681.4612454493&WIDTH=256&HEIGHT=256"

I get his error: "getSymbol(): Symbol definition error. Parsing error 
near ([):(line 1) ".
Is there anything wrong in my url?

Thanks for any help.

Subha

Steve Lime wrote:
> Nikos: There can be more than one style in a class to you'd need the array notation there too:
>
>   &map.layer[oikismoi].class[oikismoi].style[0].color+230+34+35
>
> Does that work?
>
> Steve
>
>   
>>>> <nikos at maich.gr> 10/06/08 8:18 AM >>>
>>>>         
> Hello all,
>
> I've been scratching my head as to how to change the color that a layer
> maybe rendered via a form. My users want to select which color the layers
> should be rendered.
>
> Would appreciate a bit of insite. I'm using FW MS 5.1-dev
>
> I've tried, according to the docs, using layer and class names as well as
> layer and class index and neither work...
>
> &map.layer[oikismoi].class[oikismoi].style.color+230+34+35
> &map.layer[0].class[0].style.color+230+34+35
>
>
> In MS 4.something, I used to use "map_layer_0_class_0_color=255+0+0"
> successfully
>
> I've also tried to use something like
>
> CLASS # layer color change
>     EXPRESSION '%layer_color%'
>     style
>       backgroundcolor 128 128 128
>       color 2 2 220
>       outlinecolor 150 150 150
>       end
>     END
>
> to at least statically test a substitution, but fail...
>
> below is a snip from my mapfile,
>
> sincerely,
>
> nikos
>
>  LAYER
>   debug 5
>     classitem "OBJECTID"
>     data "LANDUNIT_KARDITSA"
>     footer "LANDUNIT_KARDITSA_footer.html"
>     group "LANDUNIT_KARDITSA"
>     header "LANDUNIT_KARDITSA_header.html"
>     labelcache on
>     labelitem "OBJECTID"
>     name "LANDUNIT_KARDITSA"
>     postlabelcache true
>     status on
>     type polygon
>     OPACITY 70
>     # 1 class LANDUNIT_KARDITSA
>     class
>      name "KARDITSA"
>      style
>       backgroundcolor 128 128 128
>       #color 133 234 21
>       color 22 200 22
>       outlinecolor 50 50 50
>       end
>       template "LANDUNIT_KARDITSA_query.html"
>     end
>   end
>   LAYER
>   DEBUG 5
>     classitem "OBJECTID"
>     data "oikismoi"
>     footer "oikismoi_footer.html"
>     group "oikismoi"
>     header "oikismoi_header.html"
>     labelcache on
>     labelitem "OBJECTID"
>     name "oikismoi"
>     postlabelcache true
>     status on
>     type polygon
>     # 1 class oikismoi
>     class
>     name "oikismoi"
>     style
>       backgroundcolor 0 128 128
>       color 22 122 233
>       outlinecolor 0 0 0
>       end
>       template "oikismoi_query.html"
>     end
>   end
>
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