**CIGAL Reference Manual, Chapter 3 (Functions): matrix**
===== Matrix -- Allocate memory for a matrix or image variable =====
**usage: matrix_varb = matrix(xdim,ydim)**

MATRIX is used to allocate memory space to a matrix variable that
was not allocated space when originally declared.  You can also
use MATRIX to change the dimensions (and allocate new memory space)
for such a matrix variable. You cannot use MATRIX, however, to set
or change the memory allocated to a variable if the dimensions of
the variable were specified during its initial declaration.

**See Also:**\\
[[jvs:cigal:manual:chapter3:array|ARRAY(3)]], 
[[jvs:cigal:manual:chapter2:declare|DECLARE(2)]], 
[[jvs:cigal:manual:chapter1:memory|MEMORY(1)]], 
[[jvs:cigal:manual:chapter3:solid|SOLID(3)]], 
[[jvs:cigal:manual:chapter1:variables|VARIABLES(1)]]

[[jvs:cigal|CIGAL Home]], 
[[jvs:cigal:manual|CIGAL Manual]], 
[[jvs:cigal:manual:chapter3|Functions List]], 
[[jvs:cigal:manual:help|Manual Help]]