Multi line color in graph

Hi,

While trying to plot a graph

plot(1:10, rand(10,10))

Each line has a different color.

Is it possible to vary the color scale from a darker shade to lighter shade? For instance, from black to grey

Answer 1

[Star Strider]

Try this:

cmap = colormap(gray(10));
figure
hp = plot(1:10, rand(10));
set(gca,'ColorOrder',cmap)

Experiment to get dufferent results.

[Deepa Maheshvare]

Sorry, it didn't work. I still see multiple colors

[Star Strider]

It works correctly for me in R2019b:

It plots only gray lines.

[Deepa Maheshvare]

Thank you. I am using R2019a. I will upgrade the MATLAB version.

[Star Strider]

My pleasure.

My code should work in R2019a.

[Deepa Maheshvare]

Unfortunately, I could only obtain this in 2019a

[Walter Roberson]

There was a change in r2019b about color order, such that it now affects lines already drawn. In previous versions you need to set the color order before you draw the lines.

[Star Strider]

@Walter — I didn’t realise that. Thank you!

[Deepa Maheshvare]

cmap = colormap(gray(10));
figure
set(gca,'ColorOrder',cmap)
hp = plot(1:10, rand(10));

I tried the above. It didn't work either.

Could you please suggest what's going wrong?

[Star Strider]

I wish I could, since the code I posted works for me. The code appears to be correct, according to the ColorOrder property documentation. (The colororder function is new in R2019b.)

The set call should not be a problem, however the only thing I can think of at this point is to use a slightly different calling syntax:

cmap = colormap(gray(10));
figure
hp = plot(1:10, rand(10));
Ax = gca;
Ax.ColorOrder = cmap;

This also worked when I tried it.

[Walter Roberson]

Deepa, do you happen to be using MacOS Catalina ?

[Deepa Maheshvare]

Walter, I am uisng Windows OS. I upgraded from 2019a to 2019b. The solution that was posted earlier works fine now. Thank you

[Star Strider]

@Deepa Maheshvare — Thank you for following up. I am happy that it worked for you.