Plot pixels from 2D boolean array

I have a 2D boolean array stored 0s and 1s where I want to plot a red pixel. For example, If the 2D boolean array has 1 for (20, 20) location, it should plot a red pixel at that location. Else, it is has 0, it should not plot the red pixel.

Can someone help me?

[Radhika Kulkarni]

2D Boolean Array is size 101x101

Answer 1

[Stephan]

% your array
A = randi(2,101)-1;

% the result;
R=255*ones(101);
G=255*(-A+1);
B=255*(-A+1);
res = cat(3,R,G,B);

% plot result
imshow(res)

[Radhika Kulkarni]

shouldn't there be a loop to check each location of 2D Boolean array?

[Stephan]

No need for a loop - this is vectorized code.

[Radhika Kulkarni]

Great! It worked.

Now, It is plotting my image from the array. I need to rotate the axes by 135 deg CCW. How do I do that?

See the attachment. I need to rotate this by 135 deg CCW.

[Stephan]

If you have Image Processing Toolbox use imrotate. If not see FEX to download a tool.

Answer 2

[Radhika Kulkarni]

One more thing, I need to put this in a some time refresh loop, so it grows in size and back to normal size. Like pumping heart.

[Stephan]

On File Exchange there are also tools to create gif animations. Maybe you want to use this.

Answer 3

[Radhika Kulkarni]

How can I also show the x & y axis and ticks and axis data points to plot along with this vectorized code?