Hi,<br><br>The file I'm using is actually MG2, using only 3 bands. <br><br>Note, thats its the same file I used for testing in 1.7.x aswell.<br><br><br>- Oyvind<br><br><br><div class="gmail_quote">On Fri, May 13, 2011 at 4:08 PM, Kirk McKelvey <span dir="ltr"><<a href="mailto:kmckelvey@lizardtech.com">kmckelvey@lizardtech.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div link="blue" vlink="purple" lang="FR"><div><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D" lang="EN-US">Is this with MG3 or MG4 files? MG4 uses an alpha channel instead of nodata, so what you describe would be expected in that case.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D" lang="EN-US"> </span></p><p class="MsoNormal"><b><span style="font-size:10.0pt" lang="EN-US">From:</span></b><span style="font-size:10.0pt" lang="EN-US"> <a href="mailto:gdal-dev-bounces@lists.osgeo.org" target="_blank">gdal-dev-bounces@lists.osgeo.org</a> [mailto:<a href="mailto:gdal-dev-bounces@lists.osgeo.org" target="_blank">gdal-dev-bounces@lists.osgeo.org</a>] <b>On Behalf Of </b>Oyvind Idland<br>
<b>Sent:</b> vendredi 13 mai 2011 04:28<br><b>To:</b> <a href="mailto:gdal-dev@lists.osgeo.org" target="_blank">gdal-dev@lists.osgeo.org</a><br><b>Subject:</b> [gdal-dev] GDAL 1.8.0 and MrSid "no-data" values</span></p>
<div><div></div><div class="h5"><p class="MsoNormal"> </p><p class="MsoNormal">Hi,<br><br>I just updated to 1.8.0 from 1.7, using the MrSid DSDK 8.0. <br><br>In order to handle transparency, i have until now used the metadata values from "IMAGE__NO_DATA_VALUE", <br>
and simply masked away pixels.<br><br>After upgrading, the IMAGE__NO_DATA_VALUE yields nothing, neither is it listed when using gdalinfo.<br><br>The band->GetNoDataValue() doesn't give me any hints either.<br><br>Should I handle this in a different way ?<br>
<br><br>-- Oyvind</p></div></div></div></div></blockquote></div><br>