[Gdal-dev] gdal_translate question

[Tyler Mitchell]

Matt,
I haven't tried it before but what about the -a_nodata parameter?
e.g. gdal_translate -of "PNG" -a_nodata 0  input.tif output.png
??

Tyler

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Matt wrote:
I was wondering if there is a way to either specify a 
pixel value of 0 as being transparent when using 
gdal_translate to create a PNG output file from a TIF, 
or if an alpha band can be added under the same 
circumstance.  Any advice in this area is greatly 
appreciated!