How can I create a matrix of black and white blocks given probability p of being black or white?

I want to create a 10x10 matrix of 0's. There is a probability p of the 0 becoming a 1. If the block is a 1, the block is black, if 0, the block is white.

I don't really know how to iterate this:

I assume I would start with the given matrix. I would use

zeros(10,10)

and then iterate through using random numbers

if p<0.5 % I don't know how to change from 0 to 1

then how would I visualize the matrix in the colors?

Thank you for and help?

Answer 1

[Image Analyst]

Try this:

% Define parameters.
rows = 10;
columns = 10;
percentage = 0.5;
% Create initial matrix of all zeros.
m = zeros(rows, columns) 
% Figure out how many elements need to be set to 1.
numIndexes = round(percentage * rows*columns)
% Use randperm() to get that number of elements from random locations:
indexesToSet = randperm(rows*columns, numIndexes)
% Set those indexes to 1
m(indexesToSet) = 1

[Gaëtan Poirier]

how would I be able to print the matrix as a grid? with 1's and 0's being different colors?

[Gaëtan Poirier]

I could just use

imagesc(m)

Answer 2

[James Tursa]

E.g.,

result = rand(10,10) < p;