Change opacity of Lines

Hello everyone

I want to change the opacity of lines I plotted in a figure in MATLAB. I read somewhere about alpha and facealpha commands but couldn't figure how to use them. Could somoene please tell me how to do this?

Regards Adi

Answer 1

[Walter Roberson]

It is not possible to set the transparency of lines.

The workaround is to use very thin patches instead of lines, as you can change the EdgeAlpha property for patch edges, or the FaceAlpha property of patch faces; see http://www.mathworks.com/help/techdoc/ref/patch_props.html

Answer 2

[Royi Avital]

In newer versions of MATLAB you can do that easily using the Color property of the line.

By default it is RGB array (1 x 3). Yet if you set it to RGBA (1 x 4) the last value is the alpha of the color.

Enjoy...

[Erik Jäverbrink]

This was an excellent solution!

[Garvit Amipara]

Spent half an hour to find a solution, here it is. Thank you!

[Murphy Liu]

Thank you!! I spent hours on this problem

[goc3]

This question should be updated to have this as the selected answer!

[Greta Koumarianou]

this does not work on 2021a. bit of an embarassment for matlab

[Soheil]

The following works in R2021b (64-bit, Windows). The last value changes the transparency:

'Color',[0 0.4470 0.7410 0.1]);