[MS4W-Users] Attempt to classify 24bit image

[José Pedro Santos]

> Date: Tue, 6 Nov 2012 11:59:51 -0400
> From: jmckenna at gatewaygeomatics.com
> To: ms4w-users at lists.maptools.org
> Subject: Re: [MS4W-Users] Attempt to classify 24bit image
> 
> On 12-11-06 11:37 AM, José Pedro Santos wrote:
> > Dear all,
> > 
> > I'm trying to visualize one image of 24bit image as WMS service but when
> > I try to use the function get map with output PNG I have this error:
> > 
> >  <ServiceExceptionReport version="1.1.1"><ServiceException>
> > msDrawMap(): Image handling error. Failed to draw layer named
> > 'africa_012003'.
> > drawGDAL(): Unable to access file. Attempt to classify 24bit image, this
> > is unsupported.
> > </ServiceException></ServiceExceptionReport>
> > 
> > So, I change the mapfile "Imagetype" to png24 and the error was the same
> > mostly because I have to put IMAGEMODE PC256 because with RGB don't work.
> > 
> > I already try to change to JPEG but when I do that said:
> > loadOutputFormat(): General error message. OUTPUTFORMAT clause
> > references driver GD/JPEG, but this driver isn't configured.
> > 
> > Some ideas?
> 
> Hello José,
> 
> Are you configuring your different output formats with the OUTPUTFORMAT
> object?  Many examples live at:
> http://www.mapserver.org/mapfile/outputformat.html  Maybe you could
> paste your outputformat objects from your mapfile here for the mailing
> list to look at.
> 
> -jeff
> 
> 
> 
> -- 
> Jeff McKenna
> MapServer Consulting and Training Services
> http://www.gatewaygeomatics.com/
> 


Many thanks for your reply Jeff, 

I only have one layer so I just put only one Output (I don' t know if is correct like that). The mapfile worked fine with one raster image with 8bit and 1 band. This new file have 3 bands and is a 24bit image


MAP # Start of Mapfile
 NAME "africa_012003"
 STATUS ON
 SIZE 600 400
 EXTENT -31.269 -54.464 63.503 39.727
 UNITS METERS
 IMAGECOLOR 10 10 15
 IMAGETYPE "png"

PROJECTION # parameter projection
 "init=epsg:4326"
END # End of parameter projection

WEB # Parameter WEB
 METADATA
 "WMS_TITLE" "WMS Layers"
 "WMS_ABSTRACT" "Service WMS for all layers inside PostgreSQL DB"
 "WMS_ONLINERESOURCE" "http://localhost/cgi-bin/mapserv?map=var/www/africaraster2.map&"
 "WMS_SRS" "EPSG:4326"
 "WMS_ENABLE_REQUEST" "* !GetFeatureInfo"
 "WMS_KEYWORDLIST" "Africa, Environment Models"
 "WMS_CONTACTPERSON" "Santos"
END # End parameter Metadata
END # End parameter WEB

OUTPUTFORMAT # Parameter Outputformat
  NAME "png"
  DRIVER AGG/PNG
  MIMETYPE "image/png"
  IMAGEMODE RGB
  EXTENSION "png"
END # End parameter Outputformat

....... On the LAYER.....

PROCESSING "NODATA=0"
 PROCESSING "SCALE=AUTO"
 PROCESSING "BANDS=1,2,3"
 PROCESSING "DITHER=YES"




The OUTPUT when I choose GD/PNG said that is not supported but with AGG/PNG that error message disappear. 

Best Regards
José Santos 















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