Russ Rew wrote:
Robert Weaver asked:
I am trying to find out if the ability exists to extract an array of
indices from a variable along one dimension.
For instance, I have variables that are 2 dimensional from the
unstructured model, one dimension is the nodal value and the other is
time.
Lets assume that I have queried an unstructured mesh for specified
locations (ie the nodal points within a specific Lat/Lon box), and saved
the indices of those locations to an array variable. Does there exist a
means of passing that array of non-consecutive indices into
nf90_get_var, to extract those values.
No, sorry, there is no function that does what you want, even in
netCDF-4.
It would be relatively straightforward to write such a function that
used the single value interfaces for accessing variable values for each
index in the specified array, returning the resulting array of values.
If the indices in the array were sorted, it might not be too
inefficient, because it could take advantage of the read-ahead buffering
in the netCDF library.
--Russ
I'd suggest looking at NCL (which uses the NetCDF libraries) to
accomplish this.
gerry
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Gerry Creager -- gerry.creager@xxxxxxxx
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