using RGB colour code while looping plots

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Robin Strak
Robin Strak 2020-3-17
编辑： Adam Danz 2020-3-17
Hi,
while plotting different arrays in a loop I assigned them different colours. But as the contrast between the different colours is not very good, I´d like to have the colours in RGB code instead of the predefined 'r', 'k', ...
j = 1;
k = 1;
str = {'A1', 'A2', 'A3', 'A4'};
col = {'r', 'k', 'g', 'b'};
for i = 1:20:80
plot(M_3(i:19+i), col{k}, 'LineWidth',1);
str = [str ("Graph " + str(j))];
hold on
j = j+1;
k = k+1;
end
I thought of something like col = {4 31 74, 5 41 98}; but an error pops up.
Can you help me using another way to define different colours?

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采纳的回答

Adam Danz
Adam Danz 2020-3-17
编辑：Adam Danz 2020-3-17
Use one of the builtin colormaps or create your own nx3 RGB Color matrix where all values are between 0 and 1.
col = parula(4);
for i = 1:4
% . . . skipping stuff
plot(x,y,'Color', col(i,:))
end
Check out a list of color maps here
https://www.mathworks.com/help/matlab/ref/colormap.html#buc3wsn-1-map

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