Ahmet,<br><br>Transparency can be easily set using the alpha channel in RGBA images. Use the -init option to set the background to transparent. Make sure this is equal to the value set as nodata.<br>You can set the nodata value using the -a_nodata option.<br>
Make the rasterized areas visible by setting the alpha channel to 255 (or the maximum value of that data type).<br><br>If you are burning the values using an attribute or the Z values, you will have to create the alpha channel as a separate image and combine the images.<br>
<br><div class="gmail_quote">2011/1/26 ahmet temiz <span dir="ltr"><<a href="mailto:ahmettemiz88@gmail.com">ahmettemiz88@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
hello I am confused about using gdal_rasterize<br>
<br>
I want to rasterize a geological map (vector polygons)<br>
and having one attributes and making nodata areas<br>
as transparent.<br>
<br>
how can I do that ?<br>
<br>
regards<br>
<br>
--<br>
Ahmet Temiz<br>
Jeoloji Müh.<br>
Planlama ve Zarar Azaltma Dairesi Başkanlığı<br>
Bilgi ve CBS grubu<br>
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Tel : 0 312 2872680 / 1535<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Best regards,<br>Chaitanya kumar CH.<br>/tʃaɪθənjə/ /kʊmɑr/ <br>+91-9494447584<br>17.2416N 80.1426E<br>