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Dear List
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<div>I have a compressed 4-band geotiff image with the 4th band being the Alpha channel. When I reproject this image to any other projection using gdalwarp or cut a a small window out of it using gdal_translate, all pixel values become 0 although in the original
image they are not zeros. I think this is because the alpha channel is being interpreted as a mask band - how do I turn this off? I just want to be able to reproject the image and retain pixel values of all 4 bands (including the alpha band) in the new reprojected
file.</div>
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<div>Thank you.</div>
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<div>Mutlu..</div>
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<pre class="moz-signature" cols="72">--
Mutlu Ozdogan, Ph.D.
Associate Professor
Department of Forest and Wildlife Ecology &
Nelson Institute for Environmental Studies
t: (608) 262-0873
e: <a class="moz-txt-link-abbreviated" href="mailto:ozdogan@wisc.edu">ozdogan@wisc.edu</a></pre>
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