Clear Filters
Clear Filters

Plot multiple histogram within 1 function

3 views (last 30 days)
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];
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];
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)
f(i) = fitdist(out(i),'kernel');
pdf(i) = pdf(f(i),x);
l(i) = line(x,pdf(i),'linestyle','-','color',histogram_color,'linewidth',3);
  1 Comment
Adam Danz
Adam Danz on 14 Oct 2020
You're missing "hold on"
Otherwise the 2nd histogram replaces the first.

Sign in to comment.

Accepted Answer

Sudhakar Shinde
Sudhakar Shinde on 15 Oct 2020
[~,ErrorLength]= size(out);
for i =1:ErrorLength
hold on
hold off

More Answers (2)

Steven Lord
Steven Lord on 14 Oct 2020
The "Plot Multiple Histograms" example on the documentation page shows how to superimpose two histogram plots using hold on.

MadjeKoe on 15 Oct 2020
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;
out = [out{:}];
ero1 = out(:,1);
ero2 = out(:,2);
ero3 = out(:,3);
ero4 = out(:,4);
Adam Danz
Adam Danz on 15 Oct 2020
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
% hold off <--- remove or move out of the loop
Adam Danz
Adam Danz on 15 Oct 2020
Edited: Adam Danz on 15 Oct 2020
"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.

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!