how do i get the color gray
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how do i get the color gray on my graph
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Hans Scharler
2022년 5월 13일
편집: Hans Scharler
2024년 1월 23일
As others have pointed out, gray is the result of the Red, Green, and Blue values being equal somewhere between 0 and 1 where black is [0 0 0] and white is [1 1 1].
x = rand(200,4);
y = rand(200,4);
grayColor = [.7 .7 .7];
plot(x, y, 'Color', grayColor)
If you are you used to 255 color values from HTML for example, you can divide by 255 to get a value between 0 and 1. Classic HTML gray is [128, 128, 128].
x = rand(200,4);
y = rand(200,4);
htmlGray = [128 128 128]/255;
plot(x, y, 'Color', htmlGray)
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Steven Lord
2024년 1월 23일
And if you want to select a particular color interactively then hard-code that color value into your app, open the uisetcolor dialog box. Select the shade that matches what you want from the dialog then close the dialog. The color value will be displayed in the Command Window, ready for you to copy and paste into the app.
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Walter Roberson
2012년 5월 23일
Gray is any RGB color with Red, Green, and Blue components all equal, excepting black (all 0's) and white (all components the maximum).
For example,
plot(x, y, 'Color', [17 17 17])
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Walter Roberson
2020년 7월 28일
Which MATLAB release are you using?
plot(rand(1,5), 'Color', uint8([17 17 17]))
hold on
plot(rand(1,5), 'Color', [17 17 17]/255)
hold off
works for me.
Note that there are some plot attributes that only accept floating point, such as most Alpha values. In that case you would need the /255 form.
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