Routines (alphabetical) > Routines: R > READ_SPR

# READ_SPR

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.

## Examples

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 `spr`s, use the following command:

sprs = READ_SPR('sprs.as')

## Syntax

Result = READ_SPR(Filename)

## Return Value

Returns the row-indexed sparse array from the specified file.

## Arguments

### Filename

A scalar string specifying the name of the file containing a row-indexed sparse array.

## Version History

Pre-4.0 | Introduced

## See Also

FULSTR, LINBCG, SPRSAB, SPRSAX, SPRSIN, WRITE_SPR