| Best method for very big array rebinning? [message #40013] |
Wed, 07 July 2004 07:10  |
amolins
Messages: 3
Registered: July 2004
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Junior Member |
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Hello,
I have a program that needs to rebin from one to another coordinate
system thus interpolating the actual data in positions already
computed and arranged the way INTERPOLATE function demands, so I only
have to do INTERPOLATE(array, coords1,coords2,coords3).
I have to rebin a "array" very very big (2GB in disk) of
floating-point values, so I made use of SHMMAP function to access to
the data fast. But this solution doesn't scale, because IDL complains
(both in windows and linux implementations) about the size of the
array declared in that way.
My questions are:
1) is there any efficient method to perform this without having to
code by myself in a FOR loop each acces by POINT_LUN, READU, and maths
for each value to be interpolated?
2) is there any way to increase the maximum number of elements in an
array in IDL 6.0?
Thanks,
Antonio.
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