How to use loop for plotting multiple plots and legend?

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Arshey Dhangekar
Arshey Dhangekar 2022-8-25
评论： Dyuman Joshi 2022-9-12
I want to plots mulplits plots on and I have single x time axis and temp1 upto temp20 similalry so how to use loop here for labeling the legend and plots instead of writing for 20 times.
t=readtable ()
plot (t.time,t.temp1, .t.time,temp20)
legend ("Temp1",....,"Temp2")

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采纳的回答

Dyuman Joshi
Dyuman Joshi 2022-8-25
Ran in:
What you want to do is possible but quite more tedious than what you did.
y=readtable('test file.xlsx');
z=cell(1,20);
for i=1:20
z{i}=sprintf('temp%d', i); %collecting legend labels in a cell array
plot(table2array(y(:,'Time')),table2array(y(:,z{i})))
hold on
end
hold off
legend(z,'Location', 'best','FontSize',6 , 'NumColumns',4)

更多回答（1 个）

Arshey Dhangekar
Arshey Dhangekar 2022-9-1

How to vary colors because it's difficult to identify the parameters. Any suggestions

  3 个评论
显示 1更早的评论
Arshey Dhangekar
Arshey Dhangekar 2022-9-11
Temp 1 and temp 15 have same plot colors and similarly other plots also so it's hard differentiate the plots. So how to vary colors so that every temp1 to temp 20 will have different color or shade
Dyuman Joshi
Dyuman Joshi 2022-9-12
Ran in:
You can use rand() (which I guess is the default option as well) to obtain different colors. Though there's a chance that 2 or more colors seem similar, for eg -
x=0:0.01:10;
for i=1:20
plot(x,sin(x).^i,'Color',rand(1,3))
z{i}=sprintf('sin^{%d} x', i);
hold on
end
legend(z,'Location', 'best','FontSize',6 , 'NumColumns',4)
%11-13, 16-18 look similar
Or you can define particular array for it, to distinguish better in between colors.
A random example -
y = (dec2base(0:19,3)-'0')/2;
figure
for i=1:20
plot(x,cos(x).^i,'Color',y(i,:))
z{i}=sprintf('cos^{%d} x', i);
hold on
end
legend(z,'Location', 'best','FontSize',6 , 'NumColumns',4)

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