Hatching a polygon

[Delfos, Jacob]

Hi Gary,

I noticed with hatching (and other polygon fills) that you have to
specify:

TRANSPARENCY 100 # this means fully opaque

If you don't, you will get a white fill underneath your hatch. It
doesn't make sense (maybe I missed something), but at least it's easy to
get around.

Hope this helps,

Jacob

 

> -----Original Message-----
> From: UMN MapServer Users List 
> [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On Behalf Of Gary Watry
> Sent: 2 April 2007 19:15
> To: MAPSERVER-USERS at LISTS.UMN.EDU
> Subject: [UMN_MAPSERVER-USERS] Hatching a polygon
> 
> I know how to hatch a polygon,
> but what I want to do is
> 1. if I create a polygon fill using
> 
> in the symbol.sym file
> 
> # Cross Hatch
>   SYMBOL
>     NAME "hatch"
>     TYPE HATCH
>   END
> 
> and in the mapfile
> 
>      STYLE
>          SYMBOL 'hatch'
>          COLOR 255 0 0
>          OUTLINECOLOR 0 0 0
>        ANGLE 45
>          SIZE 10
>          WIDTH 3
>       END
> 
> How do I make the hatch so I can see the layer underneath the polygon 
> instead of the white color between the hatch lines??
> 
> 2 Is it possible to make a polygon fill semi-transparent so 
> you can see 
> the layer underneath the polygon through the fill??
> 
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> Gary L. Watry
> GIS Coordinator
> Center for Ocean-Atmospheric Prediction Studies
> FSU / COAPS
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> 
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> 
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