What property of a line is related to the transparency / opacity or alpha of a line?

조회 수: 6 (최근 30일)
Robbin van Hoek
Robbin van Hoek 2020년 10월 14일
댓글: Ameer Hamza 2020년 10월 17일
when i plot a line with transparency by means of rgba color triplet and opacity.
hline = plot(x,y,'color',[1,0,0,0.5])
What property of the resulting handle is changed? I cannot find anything in the color triplet, nor can i find a seperate property like 'Alpha' or 'FaceAlpha' or anything similar.

이 질문에 답변하려면 로그인하십시오.

채택된 답변

Ameer Hamza
Ameer Hamza 2020년 10월 14일
편집: Ameer Hamza 2020년 10월 14일
This is an undocumented feature in MATLAB: http://undocumentedmatlab.com/articles/plot-line-transparency-and-color-gradient
You can access the alpha value using this line
alpha_val = hline.Edge.get.ColorData(4)
It is in uint8, you can convert to double
alpha_val = double(hline.Edge.get.ColorData(4))/255

추가 답변 (0개)

카테고리

Help Center 및 File Exchange에서 Lighting, Transparency, and Shading에 대해 자세히 알아보기

태그

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by