How to assign a color to zeros in a matrix.

Hello, I have a problem, how to assign a color to zeros in a matrix, for example:

zeros = Z == 0;
Z (zeros) = NaN;

But I want to assign a color to NaN in the graph, how is this possible. regards

[Guillaume]

Never name a variable zeros (or ones). Both are such commonly used functions that your are going to confuse anybody reading your code. Plus, it prevents you from using them.

Your title asks about zero, yet your question talks about NaN. NaN and 0 are completely different concepts. So which are you actually asking about?

[Yrobel Lima]

Sorry, I want to assign a different color to the zeros in the matrix. Thanks a lot

[Guillaume]

Birdman's answer appeared to do what you want then. I'm not sure why he deleted it.

[Birdman]

I thought I was out of topic. Let me answer again then.

[Guillaume]

It's my personal opinion, so take it for whatever it's worth, but I'd prefer if you didn't delete your answers so often. Even if they may not answer the actual questions (which are often ambiguous anyway), they still provide some useful information.

[Birdman]

I don't want my answer to be a junk between other answers if it is out of topic, therefore I find it useful to delete them and so the readers will confuse less.

Answer 1

[Birdman]

When you say assigning colors to zeros, I thought of assigning them while plotting. Consider a simple example:

x=1:10;
y=[2 4 5 6 0 0 0 3 2 4];
plot(x,y);hold on;
plot(x(y==0),y(y==0),'color','r','marker','o');