How can I assign custom colors to stacked bar plot

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!

Answer 1

[Matt Tearle]

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;

[Tong Zhao]

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;