That did work; thanks very much! <div><br></div><div>closed: <a href="https://github.com/jywarren/mapknitter/issues/15#issuecomment-3344500">https://github.com/jywarren/mapknitter/issues/15#issuecomment-3344500</a></div><div>
<br><div class="gmail_quote">On Mon, Jan 2, 2012 at 12:30 AM, Jean-Claude Repetto <span dir="ltr"><<a href="mailto:jrepetto@free.fr">jrepetto@free.fr</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="HOEnZb"><div class="h5">On 01/02/12 05:55, Jeffrey Warren wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I'm using some images with blurred edges (like<br>
<a href="http://tinyurl.com/6r2s3z4" target="_blank">http://tinyurl.com/6r2s3z4</a>) to mosaic a larger geotiff with gdal_merge,<br>
but it doesn't respect transparency that's not either 0 or 1. Is there<br>
any way to achieve this without coding my own merge tool?<br>
<br>
This is what results: <a href="http://tinyurl.com/7xckw98" target="_blank">http://tinyurl.com/7xckw98</a><br>
<br>
The command i'm using (gdal 1.7.3 on ubuntu 11.10) is:<br>
<br>
gdal_merge.py -n 0 -o warren-township-geo.tif 47539-geo.tif<br>
47543-geo.tif 47547-geo.tif<br>
<br>
More detail on this issue is here:<br>
<a href="https://github.com/jywarren/mapknitter/issues/15#issuecomment-3326956" target="_blank">https://github.com/jywarren/<u></u>mapknitter/issues/15#<u></u>issuecomment-3326956</a><br>
<br>
I'd appreciate any tips, and I am wondering if I can contribute if this<br>
functionality does not exist already.<br>
<br>
Jeff<br>
</blockquote>
<br></div></div>
Hi Jeff,<br>
<br>
I am not sure it will solve your problem, but you should try gdalwarp to merge your files.<br>
gdal_merge.py is only an example program to show how to use the Python API. The correct tool to merge files is gdalwarp.<br>
<br>
Jean-Claude<br>
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</blockquote></div><br></div>