Jason Roberts wrote:
Is the GDAL ArcInfo Binary Grid (AIG) driver intended to support AIGs
with multiple bands? I have a 5-band AIG for which the Python gdal
bindings for GDAL 1.6.0 report "`C:\Temp\ccomp2' not recognised as a
supported file format." ArcGIS 9.3.1 reports that the "format" of it
is "GRID Stack 7.x". It was created using standard ArcGIS tools.
I don't think that its quite right to see a GRID stack as an AIG with
multiple bands.
From (somewhat long term) memory an ArcInfo Grid Stack is actually a
collection of individual grids, rather than a single grid dataset with
multiple bands. Within ArcInfo Workstation stacks can be converted to a
few multiband image formats, and multiband images converted to stacks.
I *think* that Stacks always have an INFO file, possibly called
<stackname>.stk, and I also think that the grids composing a stack had
to have identical bounds, and be in the same workspace. Any particular
grid in a workspace could be in zero, one or more stacks.
Anyway I would expect that GDAL will deal fine with the individual grids
in the stack, as individual datasets. Any GDAL utility, or binding,
which can combine individual datasets into a multiband image could
therefore convert a stack into an image. Of course you would need to
know which individual grids form the stack.
hth
Andrew
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