How to change the stem line color

Asked by Daniel Carr on 27 Apr 2016

Latest activity Commented on by Daniel Carr on 27 Apr 2016

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I am trying to do a stem plot with all the lines the same color. When I plot any of the examples from the website, all the lines have a gradient color on them, which makes my dataset confusing. I am using 2016a.

I have tried to change the color parameter of the data, but all this changes is the marker color. Please can someone direct me in the right direction as to how I can change this? I have included a picture of what my output looks like:

2 Comments

Azzi Abdelmalek on 27 Apr 2016

Can you post the code that gives this figure?

Daniel Carr on 27 Apr 2016

figure(1)
stem(X1,Y1,'Marker','none','Color',[0 0.498039215803146 0]);
hold on
stem(X1(Y1>30),Y1(Y1>30),'Marker','none','Color',[1 0 0]);
hold off

This has been taken from an example online. Also I have the same issue when I run the examples from the website.

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2 Answers

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Answer by Star Strider on 27 Apr 2016

Accepted Answer

It may be perception rather than reality. Experimentally, increase the line width, and the lines look as they should:

figure(1)
stem(X1,Y1,'Marker','none','Color',[0 0.498039215803146 0], 'LineWidth',2);
hold on
stem(X1(Y1>30),Y1(Y1>30),'Marker','none','Color',[1 0 0], 'LineWidth',2);
hold off

2 Comments

Daniel Carr on 27 Apr 2016

Thank you, this seems like an annoying feature, but yes increasing the line width helps.

Star Strider on 27 Apr 2016

My pleasure.

I didn’t see any problem with your code, so this was my first troubleshooting step.

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Answer by Mike Garrity on 27 Apr 2016

That looks like the graphics driver bug which was discussed in this thread. Do you have an Intel GPU and Windows 10? My understanding is that the bug is limited to a particular Windows 10 driver version from Intel.

If that's the case, that thread has a couple of workarounds.

1 Comment

Daniel Carr on 27 Apr 2016

Ah I do have windows 10 with intel GPU. I will look into that and see what I can do

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