Change colour in stem plot, for only particuar values

Hi all,

I have a vector that I need to create a stem plot.

However, i would like to put a different colour to the 4th and 9th element

Could you hekp me with that?

I saw some similar questions but I don't really understand how to do it

thanks a lot!

Answer 1

[Tommy]

You could overlay two separate stem plots:

data = randi(10,10,1);
idx = [4, 9];

ax = axes;
hold(ax, 'on');

temp = data; temp(idx) = NaN;
stem(ax, temp, 'b');

temp = nan(size(data)); temp(idx) = data(idx);
stem(ax, temp, 'g');

[Nikolas Spiliopoulos]

thanks a lot, that's what I was looking for.....!!