MATLAB Answers

Saving a functiong graph inside a matrix

1 view (last 30 days)
Andrea Baleani
Andrea Baleani on 13 Oct 2021
Commented: Andrea Baleani on 13 Oct 2021
I am working on edge detection algorithms and i need to produce matrices which cointain graphs of various functions. They need to be in black-white format (no RGB three layer matrices).
For example if i use linspace and build up the graph of y=x^2 how do i save the plot in a non RGB matrix ?

Answers (1)

Dave B
Dave B on 13 Oct 2021
You can use im2gray to convert an RGB matrix to grayscale:
x = linspace(-5,5,100);
y = x.^2;
plot(x,y)
fr=getframe(gca);
gray_image=im2gray(fr.cdata);

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!