non-square shapefiles and tileindex

Frank Warmerdam warmerdam at POBOX.COM
Sat Feb 3 19:11:05 PST 2007


Ara T Howard wrote:
> On Fri, 2 Feb 2007, Brent Fraser wrote:
> 
>>
>>  If your goal is to not write any "null" pixels (e.g.  black)  from an 
>> input
>>  image into the output image, you can use the OFFSITE layer setting in 
>> the
>>  R,G,B values that are to be considered "null" and should not be rendered
>>  into the output image.  And there may be some more sophisticated 
>> techniques
>>  using the PROCESSING object in the layer definition.
>>
> 
> so, i just tried that with the mapfile i showed you.  i tried both
> 
>   OFFSITE 255 255 255
> 
> and
> 
>   OFFSITE 255
> 
> both result in totally blank output from mapserver for the request i 
> posted?
> 
> thoughts?

Ara,

I'd encourage you to prepare a detailed and minimal demonstration - hopefully
consisting of a mapfile, a data file, and the shp2img commandline to
demonstrate the problem without requiring any other support files.   Then you
can submit this as a bug report (assigned to me), and I'll look into what is
happening.

Keep in mind if it takes me more than 3 minutes to reproduce the bug at my
end there is a high likelyhood I will get distracted and potentially never
get back to the issue.  I'm very bad that way.  So please make it dead simple
for me to get to the point where I see the problem happening.  Then I'm likely
to become fascinated with the problem and ignore everything else around me for
a while.

Best regards,
-- 
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | President OSGeo, http://osgeo.org



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