Different grid lines color in MATLAB

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Denis Perotto
Denis Perotto on 1 Jul 2019
Commented: Denis Perotto on 1 Jul 2019
Is it possible to change color of every single grid line? Not only for all X or Y lines.
I only know it is possible to change any label on axis like this:
ax = gca;
ax.YTickLabel{2} = '\color{green}T_{S}';

Answers (1)

Jon
Jon on 1 Jul 2019
The grid is a property of the current axis. After you draw your figure, and add the grid, you can set the GridColor property of the current axis. Here's a little example. Note RGB colors are normalized values in range of 0 to 1.
% make up some data to plot
x = linspace(0,100);
y = x.^2 + 3;
% plot the data and add the grid
plot(x,y)
grid
% change the grid color, gca means get current axis, the colors are RGB values
set(gca,'GridColor',[0.1 0.2 0.9]) % a bluish color
  9 Comments
Adam Danz
Adam Danz on 1 Jul 2019
Edited: Adam Danz on 1 Jul 2019
xline & yline are great solutions for r2018b or later and those lines will extend if the axis limits are changed after they are drawn.
If you're plotting lines manually (as Jonathan proposed), the lines will not extend if the axis limits are increased which is why it's good to either set the desired axis limits prior to drawing those lines or make sure the line extend to the desired limits.
Denis Perotto
Denis Perotto on 1 Jul 2019
Okay, so it seems I have to create a custom grid of lines using 'yline' after all.

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