[Mapserver-users] HOWTO: 24 bit png on WMS interface

[Norman Vine]

Bart van den Eijnden writes:
> 
> thanks to Frank Warmerdam I have solved my problem with not getting 24 bit 
> PNG output in Mapserver.
> 
> In my MAP file I used the following:
> 
> IMAGETYPE PNG24
> 
> and then in my WMS request I used format=image/png
> 
> This caused 8-bit PNG to be generated instead of 24-bit PNG.
> 
> The solution Frank suggested is using the following OUTPUTFORMAT in my MAP 
> file and this works:
> 
> OUTPUTFORMAT
>    NAME PNG24
>    DRIVER "GD/PNG"
>    MIMETYPE "image/png"
>    EXTENSION PNG
>    IMAGEMODE RGBA
>    TRANSPARENT ON
> END
> 
> Maybe something for the Mapserver WMS HOWTO?

see
http://mapserver.gis.umn.edu/doc/mapfile-reference.html#outputformat

HTH

Norman