Generating a white noise picture

[grahamwebb]

How could I make a 2D picture of white noise (for different PC screen sizes and resolutions, black & white or greyscale)?

I can generate noisy signals, and am familiar with 2D pictures, but I'm not sure how to draw an array of numbers.

Thanks

Graham

[GerdW]

Hi Graham,

you can create a 1D array of white noise data, then Reshape it to a 2D array.

Conversion of 2D array data to images is trivial! 😄

[grahamwebb]

Thanks. I loaded a jpg, pulled apart the bundle to see what it was made of and replicated that. It worked well and I learnt a little about images in the process.  🙂