Plot multiple histogram within 1 function

4 次查看（过去 30 天）
MadjeKoe
MadjeKoe 2020-10-14
编辑： Adam Danz 2020-10-15
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

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采纳的回答

Sudhakar Shinde
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
Steven Lord 2020-10-14
The "Plot Multiple Histograms" example on the documentation page shows how to superimpose two histogram plots using hold on.
MadjeKoe
MadjeKoe 2020-10-15
S = load('/Users/mkoenraad/Desktop/Scriptie/exercise_2/simulated_serial_bias_dataset.mat');
res = S.res;
targets = res(:,7);
responses = res(:,8);
orx = [3,4,5,6];
tgt = [1,2,3,4];
num = numel(orx);
out = cell(1,num);
for k = 1:num
idx = targets==tgt(k);
resp = responses(idx);
ori = res(idx,orx(k));
err = resp - ori;
err(err<-90) = err(err<-90)+180;
err(err>90) = err(err>90)-180;
out{k} = err;
end
out = [out{:}];
ero1 = out(:,1);
ero2 = out(:,2);
ero3 = out(:,3);
ero4 = out(:,4);
  9 个评论
显示 7更早的评论
Adam Danz
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
Adam Danz
Adam Danz 2020-10-15
编辑：Adam Danz 2020-10-15
"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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