plot multiple lines with same sample size and apply colour string

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Yuktha Andie Ravinthiran
评论： William Rose 2022-2-19
p2 = 'filename.xlsx'
hold on
set(groot,'defaultLineLineWidth',1.5)
ex = xlsread(p2,'1','E2:E37');
ey = xlsread(p2,'1','C2:C361');
eplot = plot(ex,rescale(ey(1:36)),'r-.',ex,rescale(ey(37:72)),'color','#D95319',ex,ey(73:108),'color','#EDB120');
legend('1','2','3')
I can plot 2 lines but when I add the third, it says there is error using plot and error using matlab_graphs
When plotting, is there a way to specify plot ey in chunks of 36 and apply a rainbow colourstring to the lines plotted

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William Rose
William Rose 2022-2-17
编辑：William Rose 2022-2-17
Ran in:
@Yuktha Andie Ravinthiran,
Yes it is possible. Use the "hold on" command and write a for loop. Inside the ploop, plot successive sets for 36 points.
See below.
N=432;
x=rand(1,N); %create N data points
M=36;
P=floor(N/M); %number of loop passes to make
colors=[1,0,0; 1,.5,0; 1,1,0; .5,1,0; ...
0,1,0; 0,1,.5; 0,1,1; 0,.5,1;...
0,0,1; .5,0,1; 1,0,1; 1,0,.5]; %colors to use
figure;
hold on
for i=1:P
plot((i-1)*M+1:i*M,x((i-1)*M+1:i*M),'Color',colors(i,:));
end
Try it.
  1 个评论
William Rose
William Rose 2022-2-19
Ran in:
@Yuktha Andie Ravinthiran,
I see now that you plotted your 36 point groups all versus the same x-axis values. To do this, change the "plot" line in the code above:
N=432;
x=rand(1,N); %create N data points
M=36;
P=floor(N/M); %number of loop passes to make
colors=[1,0,0; 1,.5,0; 1,1,0; .5,1,0; ...
0,1,0; 0,1,.5; 0,1,1; 0,.5,1;...
0,0,1; .5,0,1; 1,0,1; 1,0,.5]; %colors to use
figure;
hold on
for i=1:P
plot(1:M,x((i-1)*M+1:i*M),'Color',colors(i,:));
legstr{i}=sprintf('Run %d',i);
end
legend(legstr);
I added a legend line.
Good luck.

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