use "set" with trasparent color

selected = findobj(allLines,'Type','line','LineWidth',0.5);

set(selected, 'MarkerFaceAlpha',.2,'MarkerEdgeAlpha',.2);

Error using matlab.graphics.chart.primitive.Line/set

Unrecognized property MarkerFaceAlpha for class Line.

Error in mycallback (line 19)

set(selected, 'MarkerFaceAlpha',.2,'MarkerEdgeAlpha',.2);

Error while evaluating Line ButtonDown

Hi, i try to color in trasparente mode but i get error

Answer 1

[Matt J]

It's undocumented, I believe, but you can control line transparency by setting the Color property to a 4-element RGBA value.

h=plot(rand(5,2),'r', 'LineWidth',4);

set(h(2),'Color',[1,0,0, 0.2]);

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[shamal]

thanks but changing the color I saw that it creates new problems I should just try to make them more transparent without changing the color

[Matt J]

What I gave you in my example does precisely that. Both lines in the plot are red, but the second line has transparency alpha=0.2. That's what a transparent red line looks like (on a white background).

[Walter Roberson]

Note:

If you serialize a plot (such as save and restore, or send it between parallel workers), then the transparancy set in this manner will be discarded.

Answer 2

[Walter Roberson]

Line objects have never supported MarkerFaceAlpha or MarkerEdgeAlpha

MarkerFaceAlpha and MarkerEdgeAlpha are used for Scatter plots.

[shamal]

What do you recommend to make the plotted lines more transparent without changing the color?