Assigning colours to a group of columns when using plot

Hey everyone,

I'm potting a matrix(M) with 50 columns. Everything plots well enough, what I want is for the first 10 columns of lines to have one colour, the second to have another etc. This is to make the groups of columns identifiable on the plot because at the moment it's 50 curves with varying colours. I have tried,

p(1:10).colour = 'red';

but Matlab doens't seem to like it.

If anyone could lend a hand I'll really appreciate it!!

Phill

Answer 1

[Peng Li]

Dot indexing doesn't support this. You can use set(p(1:10), 'Color', 'red'); instead.

A further note is that when you use dot indexing, you have to use the property name exactly and case sensitively which is Color in matlab not colour.

[Phillip Smith]

Thank you for your response!

I tried your soultion and I recieve this error message.

Undefined function or variable 'p'.

Error in SI_Beta_Gen (line 39)
set(p(1:10), 'Color', 'red');

Should I change p to plot or is there something else?

Phill

[Peng Li]

well I used p because in your question you used p. I thought that represents your figure handles.

So what did you use when you plot your data? You should use that as well.

For example

p = plot([1 2 3]);

set(p, 'Color', 'red');

in this case, as there is only a single instance, you can use dot indexing p.Color = 'red';

[Phillip Smith]

Ah yes that does make sense!

I've got it working now, thank you so much for your help. :)

Phill