# randomMutableMatrix(ZZ,ZZ,RR,ZZ) -- a random mutable matrix of integers

## Synopsis

• Function: randomMutableMatrix
• Usage:
randomMutableMatrix(nrows,ncols,zerof,max)
• Inputs:
• Optional inputs:
• Dense => ..., default value false, whether the encoding of the matrix should be dense or not: see MutableMatrix
• Outputs:
• , a random mutable nrows by ncols matrix of integers. The absolute value of the entries is less than max, and the frequency of entries equal to zero is given by zerof.

## Description

This function has been superseded by fillMatrix, which works over more rings, is much faster for large matrices, and is more flexible.
 i1 : randomMutableMatrix(10,15,.9,100) o1 = | 0 0 0 0 0 0 0 0 0 0 49 0 0 0 0 | | 0 0 0 0 14 0 0 0 0 0 0 0 0 0 0 | | 0 0 0 0 0 0 0 0 0 0 0 -12 -17 0 0 | | 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 | | 0 -87 80 0 0 0 0 0 0 0 -34 0 0 88 0 | | 1 0 0 0 0 0 -70 0 0 0 0 0 0 0 0 | | 0 0 0 100 0 0 0 0 0 0 0 0 0 0 0 | | 0 0 0 0 0 0 82 0 0 0 0 0 0 0 72 | | 0 0 0 0 0 0 0 0 48 0 0 0 0 99 0 | | 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 | o1 : MutableMatrix