Change opacity of Lines

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Adi
Adi el 24 de Jul. de 2012
Comentada: Soheil el 4 de Mayo de 2022
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

Respuesta aceptada

Walter Roberson
Walter Roberson el 24 de Jul. de 2012
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

Más respuestas (1)

Royi Avital
Royi Avital el 29 de Sept. de 2017
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...
  6 comentarios
Greta Koumarianou
Greta Koumarianou el 7 de Oct. de 2021
this does not work on 2021a. bit of an embarassment for matlab
Soheil
Soheil el 4 de Mayo de 2022
The following works in R2021b (64-bit, Windows). The last value changes the transparency:
'Color',[0 0.4470 0.7410 0.1]);

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