Specify light blue for color

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Benjamin Cowen
Benjamin Cowen 2017-8-16
回答： Image Analyst 2017-8-16
Hi how can I specify the color light blue instead of green below?
patch([x3 fliplr(x4)], [y3 fliplr(y4)], 'g' 'EdgeColor','g') % Fill Area Between Radius Limits
hold on

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回答（2 个）

Chad Greene
Chad Greene 2017-8-16
编辑：Chad Greene 2017-8-16
Hi Benjamin,
I'd do something like
h = patch([x3 fliplr(x4)], [y3 fliplr(y4)], 'g' 'EdgeColor','g');
set(h,'facecolor',[ 0.5843 0.8157 0.9882])
I got the RGB values of light blue from my rgb function by
rgb('light blue')
ans =
0.5843 0.8157 0.9882
Image Analyst
Image Analyst 2017-8-16
Define your colors as 1-by-3 arrays in the range 0-1. For example to have a light blue interior and a purple edge line, do this:
x = [1,4,4,1,1];
y = [2,2,1,1,2];
% Define light blue as whatever values you want
% but in the range of 0-255 and be sure to divide by 255 to get into the range 0-1.
lightBlue = [91, 207, 244] / 255;
purple = [103, 2, 94] / 255;
patch(x, y, lightBlue, ...
'EdgeColor', purple, ...
'LineWidth', 5)

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