I have 3 flat binary files that I would like to use to grid data. The 3
binary files are the "scattered" image data pixels and the other two
specify the fractional column and row for each input pixel in the output
grid. So the image pixel in the first file at offset 0 is mapped to the
grid column at offset 0 (from the columns file) and the grid row at
offset 0 (from the rows file).
One way I think I can get the data gridded is to use the "gdal_grid"
utility, but I'm not really sure how to get the flat binary files to be
accepted by "gdal_grid". I thought I could use VRT files, but I'm not
exactly sure how I would do that. I wasn't sure since the documentation
here http://www.gdal.org/ogr/drv_vrt.html says that I need to specify a
"SrcLayer", but binary files don't have layers. So then would I need an
intermediate VRT file to define layers for the binaries? If I need an
intermediate VRT maybe I should just push the data into a geotiff (with
no projection info) and try using that? Could someone clear this up for me?
My other question is has there been any work done to make a python
wrapper for GDALGridCreate(). I found email threads and a ticket
(http://trac.osgeo.org/gdal/ticket/2023) talking about creating one, but
then conversation just stops and those are from 5 years ago. I didn't
notice anything that screamed "this is impossible" when skimming through
those threads and the ticket. I'm also sure a lot has changed for GDAL
and numpy in the last 5 years. If it's a time thing I'm willing to add
it if someone can point me in the right direction to start (how-to on
adding to GDAL).
Thanks.
-Dave
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