The READ_SPR function reads a row-indexed sparse array. Row-indexed sparse arrays are created using the SPRSIN function and written to a file using the WRITE_SPR function.
This routine is written in the IDL language. Its source code can be found in the file read_spr.pro in the lib subdirectory of the IDL distribution.
Result = READ_SPR(Filename)
Returns the row-indexed sparse array from the specified file.
A scalar string specifying the name of the file containing a row-indexed sparse array.
Suppose we have already saved a row-indexed sparse array to a file named sprs.as, as described in the documentation for the WRITE_SPR routine. To read the sparse array from the file and store it in a variable sprs, use the following command:
sprs = READ_SPR('sprs.as')
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Pre-4.0 |
Introduced |