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Dear all, <br><br>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.<br><br>My Mapfile is this one: <br><br>...........<br><br>IMAGETYPE "png24"<br><br>..........<br><br>OUTPUTFORMAT # Parameter Output<br> NAME png24<br> DRIVER "GD/PNG"<br> MIMETYPE "image/png"<br> EXTENSION PNG<br> IMAGEMODE RGBA<br> TRANSPARENT ON<br>END # end of parameter Output<br><br><br>and in the expression of GetMap I use FORMAT=image/png<br><br>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. <br><br>any idea?<br><br>Many thanks and best regards,<br><br>José Santos<br><br><br>                                            </div></body>
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