Plot multiple histogram within 1 function
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Hi all! I made some histograms, but now I'm trying to make a function that plots multiple histograms at the same time. I want 1 plot with 4 overlapping histograms of different colors and a legend. Can someone please explain to me how to do this? I tried to make a loop (see bottom) but it doesn't seem to work.
histogram_color = [0 .7 .7];
histogram(error1,'normalization','pdf','edgecolor',histogram_color,'facecolor',histogram_color,'facealpha',.5)
x = -90:1:90;
f1 = fitdist(error1,'kernel');
pdf1 = pdf(f1,x);
l1 = line(x,pdf1,'linestyle','-','color',histogram_color,'linewidth',3);
histogram_color = [0 0 .7];
histogram(error2,'normalization','pdf','edgecolor',histogram_color,'facecolor',histogram_color,'facealpha',.5)
x = -90:1:90;
f2 = fitdist(error2,'kernel');
pdf2 = pdf(f2,x);
l2 = line(x,pdf2,'linestyle','-','color',histogram_color,'linewidth',3);
x = -90:1:90;
for i = 1:length(out)
histogram(out(i),'normalization','pdf','edgecolor',histogram_color,'facecolor',histogram_color,'facealpha',.5);
f(i) = fitdist(out(i),'kernel');
pdf(i) = pdf(f(i),x);
l(i) = line(x,pdf(i),'linestyle','-','color',histogram_color,'linewidth',3);
end
1 个评论
Adam Danz
2020-10-14
You're missing "hold on"
Otherwise the 2nd histogram replaces the first.
采纳的回答
Sudhakar Shinde
2020-10-15
[~,ErrorLength]= size(out);
for i =1:ErrorLength
hold on
histogram(out(:,i),'normalization','pdf')
hold off
end
更多回答（2 个）
Steven Lord
2020-10-14
1 个投票
The "Plot Multiple Histograms" example on the documentation page shows how to superimpose two histogram plots using hold on.
MadjeKoe
2020-10-15
0 个投票
9 个评论
MadjeKoe
2020-10-15
Sudhakar Shinde
2020-10-15
histogram_color = [0 .7 .7];
x = -90:1:90;
[~,ErrorLength]= size(out);
for i =1:ErrorLength
figure(i)
hold on
histogram(out(:,i),'normalization','pdf','edgecolor',histogram_color,'facecolor',histogram_color,'facealpha',.5)'
f = fitdist(out(:,i),'kernel');
pdf = pdf(f,x);
l = line(x,pdf,'linestyle','-','color',histogram_color,'linewidth',3);
hold off
end
Sudhakar Shinde
2020-10-15
yes. ok. Try this code at bottom. it works fine.
MadjeKoe
2020-10-15
Sudhakar Shinde
2020-10-15
Try this code:
[~,ErrorLength]= size(out);
for i =1:ErrorLength
hold on
histogram(out(:,i),'normalization','pdf')
hold off
end
This gives output on single graph with different histograms without using kernel. As i dont have toolbox i can not check for
f = fitdist(out(:,i),'kernel');
pdf = pdf(f,x);
MadjeKoe
2020-10-15
Sudhakar Shinde
2020-10-15
Glad to help you.
Adam Danz
2020-10-15
You only need to "hold on" once and that was mentioned in a comment under the question 13 hours prior to this sub-thread.
hold on % <--- Move here
[~,ErrorLength]= size(out);
for i =1:ErrorLength
% hold on <--- Remove
histogram(out(:,i),'normalization','pdf')
% hold off <--- remove or move out of the loop
end
"I did not work."
I doubt it. It's the same solution as Sudhakar Shinde's and you indicated that it worked. There must have been some other problem (which is likely given the new propblem follwing "clear all").
" I tried 'clear all' & now my whole thing is not working anymore"
'clear all' is rarely necessary. You likely were using a global variable named x and now it's no longer defined. If that's the case, it s a good lesson to never use global variables. Now you need to figure out where x was defined.
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