[Gdal-dev] VRT Raw File Access

Mario Beauchamp starged at videotron.ca
Sat Jul 31 19:35:17 EDT 2004

Hi Frank,

On Fri, 30 Jul 2004 17:58:45 -0400, Frank Warmerdam <warmerdam at pobox.com> wrote:

>At the request of Atlantis I have implemented support for accessing raw
>raster file based on writing a VRT (XML) header file.

I am glad you started to work on the VRT dataset. I think this dataset/driver is the most powerful
of them all. And so useful!

I hope you will also implement the VRTWarpedRasterBand soon as it's the crucial step to make the
OpenEV's reprojection tool work decently...

>I have not updated any of the documentation accordingly yet.

While you're at it, will you also include info about the other VRTSources? Only when I looked at
vrtdataset.h did I learn that there was a "VRTAveragedSource" which was the answer to the
downsampling question I asked a few months ago (remember the comparisons between gdalwarp and PSP?).
I also noticed there was a "VRTAverageFilteredSource" but I didn't see an implementation of that...

>I would add that we hope to update the OpenEV "raw define" tool to use .vrt so
>that we can support all pixel types.

That would be great!

Thanks for your attention.
Mario B.

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