[MS4W-Users] Image 24 Bit

[Jeff McKenna]

On 12-11-23 9:27 AM, José Pedro Santos wrote:
> Dear all,
> 
> I'm attempting to classify images of 24 bits but I always have the error
> saying this: ........Unable to access file. Attempt to classify 24bit
> image, this is unsupported.
> 
> My Mapfile is this one:
> 
> ...........
> 
> IMAGETYPE "png24"
> 
> ..........
> 
> OUTPUTFORMAT # Parameter Output
>  NAME png24
>  DRIVER "GD/PNG"
>  MIMETYPE "image/png"
>  EXTENSION PNG
>  IMAGEMODE RGBA
>  TRANSPARENT ON
> END # end of parameter Output
> 
> 
> and in the expression of GetMap I use FORMAT=image/png
> 
> In the Layer description I have the special processing directives to
> processed the 3 bands. But If put just 2 appear one empty image not the
> error. I already read some documentation but I can't succeed.
> 
> any idea?
> 
> Many thanks and best regards,
> 
> José Santos

Hello José,

It is difficult for me to comment without testing your local file.
However if I were you I might:

- in your OUTPUTFORMAT object I would:
  - change "GD/PNG" to "AGG/PNG"
  - change "RGBA" to "RGB"
  - remove "TRANSPARENT ON"


-jeff




-- 
Jeff McKenna
MapServer Consulting and Training Services
http://www.gatewaygeomatics.com/