Routines (alphabetical) > Routines: W > WRITE_SPR

# WRITE_SPR

The WRITE_SPR procedure writes a row-indexed sparse array structure to a specified file. Row-indexed sparse arrays are created using the SPRSIN function.

## Examples

; Create an array:

A = [[3.,0., 1., 0., 0.],$

[0.,4., 0., 0., 0.],$

[0.,7., 5., 9., 0.],$

[0.,0., 0., 0., 2.],$

[0.,0., 0., 6., 5.]]

; Convert it to sparse storage format:

A = SPRSIN(A)

; Store it in the file sprs.as:

WRITE_SPR, A, 'sprs.as'

## Syntax

WRITE_SPR, AS, Filename

## Arguments

### AS

A row-indexed sparse array created by SPRSIN.

### Filename

The name of the file that will contain AS.

## Keywords

None.

## Version History

Pre-4.0 | Introduced

## See Also

FULSTR, LINBCG, SPRSAB, SPRSAX, SPRSIN, READ_SPR