[mapserver-users] How do you display a symbol with two colours?
geographika
geographika at gmail.com
Wed Oct 10 10:28:44 PDT 2012
Unfortunately even with this approach when using the squares become
inconsistent in size and shape.
See http://i.stack.imgur.com/MaQZJ.png for the results.
I'm using MapServer 5.6 (64-bit on a Windows server). I'll try on a
newer build to see if the newer versions have the same results.
Seth
On 10/10/2012 09:30, Havard Tveite wrote:
> If you have moved to 6.2, you can consider using
> ANCHORPOINT
> http://mapserver.org/trunk/en/mapfile/symbol.html
>
> On earlier verions you could try the approach suggested
> in
> http://mapserver.org/trunk/en/mapfile/symbology/construction.html#tricks
>
> But that is kind of similar to what you have tried yourself.
> To avoid gaps you could try this:
>
> SYMBOL
> NAME 'SQUARE_FULL'
> TYPE vector
> FILLED true
> POINTS
> 0 0
> 0 1
> 1 1
> 1 0
> 0 0
> END
> END
> SYMBOL
> NAME 'SQUARE_R'
> TYPE vector
> FILLED true
> POINTS
> 0.5 0
> 1 0
> 1 1
> 0.5 1
> 0.5 0
> END
> END
>
> CLASS
> STYLE
> SYMBOL "SQUARE_FULL"
> COLOR [LEFT_CLR]
> SIZE 10
> END
> STYLE
> SYMBOL "SQUARE_R"
> COLOR [RIGHT_CLR]
> SIZE 10
> END
> END
>
> It seemed to work for me on 6.0.
>
> Håvard
>
> On 10/9/2012 10:32 PM, geographika wrote:
>> Hi,
>>
>> I'm trying to draw a point layer, with each point represented in two
>> colours (for example a square split in two with one half red and one
>> half green).
>> I can create the symbols and apply the data but either the squares
>> are the incorrect shape, or they overlap. The closest I got was with
>> the following CLASS definition, but then it appeared the colours were
>> shown on the wrong side of the square.
>> Images and further details at
>> http://gis.stackexchange.com/questions/35283/mapserver-symbol-with-two-colours
>> Symbol definitions:
>>
>> |SYMBOL
>> NAME 'SQUARE_L'
>> TYPE vector
>> FILLED true
>> POINTS
>> 0 0
>> 0 1
>> 0.5 1
>> 0.5 0
>> 0 0
>> END
>> END
>> SYMBOL
>> NAME 'SQUARE_R'
>> TYPE vector
>> FILLED true
>> POINTS
>> 0.5 0
>> 1 0
>> 1 1
>> 0.5 1
>> 0.5 0
>> END
>> END
>>
>> # CLASS definition
>>
>>
>>
>>
>> I'd like to symbolise a point dataset with a square (or circle) using
>> two colours. This is useful for displaying values collected on both
>> sides of a road (for example).
>>
>> split symbols
>>
>> I created two symbols, a left side and right side of the square as
>> shown below:
>>
>> SYMBOL
>> NAME 'SQUARE_L'
>> TYPE vector
>> FILLED true
>> POINTS
>> 0 0
>> 0 1
>> 0.5 1
>> 0.5 0
>> 0 0
>> END
>> END
>> SYMBOL
>> NAME 'SQUARE_R'
>> TYPE vector
>> FILLED true
>> POINTS
>> 0.5 0
>> 1 0
>> 1 1
>> 0.5 1
>> 0.5 0
>> END
>> END
>>
>> Then in my LAYER I can create a CLASS using the two different STYLES:
>>
>> CLASS
>> STYLE
>> SYMBOL"SQUARE_L"
>> COLOR [LEFT_CLR]
>> SIZE 10
>> END
>> STYLE
>> SYMBOL"SQUARE_R"
>> COLOR [RIGHT_CLR]
>> SIZE 10
>> END
>> END
>>
>>
>> |
>>
>> Any help appreciated,
>>
>> Seth
>>
>>
>>
>> _______________________________________________
>> mapserver-users mailing list
>> mapserver-users at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>
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