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

Synopsis

Function: randomMutableMatrix
Usage:

randomMutableMatrix(nrows,ncols,zerof,max)
Inputs:
- nrows, an integer
- ncols, an integer
- zerof, a real number, between 0 and 1
- max, an integer
Optional inputs:
- Dense => ..., default value false, whether the encoding of the matrix should be dense or not: see MutableMatrix
Outputs:
- a mutable matrix, 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This function has been superseded by fillMatrix, which works over more rings, is much faster for large matrices, and is more flexible.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

Ways to use this method: