How can I assign custom colors to stacked bar plot

조회 수: 7 (최근 30일)
Sara Pieczonka
Sara Pieczonka 2016년 11월 29일
댓글: Tong Zhao 2018년 5월 20일
Hi,
I am creating an image file to overlay later in google earth. The goal is to create an image in matlab that looks like a bar legend so I can add it to my map in google earth. I have done this by creating a stacked bar plot. I need 6 boxes for the legend which I have done, but my map uses specific colors so I can't use the color bars in matlab.
script for my plot: y = [1 1 1 1 1 1; 0 0 0 0 0 0;]; bar(y, 'stacked')
now I have my legend (bar plot) but I need to assign custom colors to each rectangle. I can assign one color to them all for example make them all red:
y = [1 1 1 1 1 1; 0 0 0 0 0 0;]; >> bar(y, 'stacked', 'r')
but I need 6 different custom colors. I have the RGB assigments for all 6 colors is there some way I can enter these into the script? then assign legend labels?
thanks!

답변 (1개)

Matt Tearle
Matt Tearle 2016년 12월 2일
The colors of the bars are taken from the default colormap, so the easiest solution is to change the figure's colormap. Put the 6 RGB values into a matrix, then set the figure's colormap to that matrix:
>> c = rand(6,3)
c =
0.0462 0.0344 0.4898
0.0971 0.4387 0.4456
0.8235 0.3816 0.6463
0.6948 0.7655 0.7094
0.3171 0.7952 0.7547
0.9502 0.1869 0.2760
>> y = [1 1 1 1 1 1; 0 0 0 0 0 0];
>> b = bar(y, 'stacked');
>> b(1).Parent.Parent.Colormap = c;
  댓글 수: 1
Tong Zhao
Tong Zhao 2018년 5월 20일
Does not work for me... my code is the following: x=[a b c d;0 0 0 0]; ax1= bar(x,'stacked'); cmap = colormap([ 0 0 1; 0 1 0; 1 0 0;.5 .5 0]); ax1(1).Parent.Parent.Colormap = cmap;

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