I can plot multiple plots with a same dimension in a histogram
x = rand(1000,3);
hist(x);
But I could not plot multiple plots with a different dimension.
x1 = rand(1100,1);
x2 = rand(1000,1);
x3 = rand(900,1);
x = [x1 x2 x3]
hist(x)
I get the following error
Error using horzcat
Dimensions of arrays being concatenated are not consistent.
Please someone point me to right direction to solve the problem.
You can use the histogram() function and retrieve the .binCounts of each histogram and concatenate them in a fashion that gives a 10 by 3 array. By calling bar() on this 10 by 3 array you'll get a similar binning graph that shows the histogram of 3 datasets with the bins shown as triple bars. Also a good idea to use the histogram() function as the use of hist() is no longer recommended by MATLAB.
x1 = rand(1100,1);
x2 = rand(1000,1);
x3 = rand(900,1);
h1 = histogram(x1);
Counts_1 = h1.BinCounts;
h2 = histogram(x2);
Counts_2 = h2.BinCounts;
h3 = histogram(x3);
Counts_3 = h3.BinCounts;
Bin_Edges = h3.BinEdges;
Bin_Width = h3.BinWidth;
Bin_Centres = Bin_Edges(1:end-1) + Bin_Width/2;
Counts = [Counts_1.' Counts_2.' Counts_3.'];
bar(Counts);
title("Triple Bar Histogram");
xlabel("Bin Centres"); ylabel("Count");
set(gca,'xticklabel',Bin_Centres);
Ran using MATLAB R2019b
Well the problem is indeed that you cant add non size matching vars.
Here is a patch work for you: the magic is the Nan variable that make your code match
% its bad habits but:
x1 = rand(1100,1);
x2 = rand(1000,1);
x3 = rand(900,1);
% make em' all the same size
max_size = max([length(x1),length(x2),length(x3)]);
% add in the ending nan
x1 = [x1; nan(max_size-length(x1), 1)];
x2 = [x2; nan(max_size-length(x2), 1)];
x3 = [x3; nan(max_size-length(x3), 1)];
% plot em' bad
x = [x1 x2 x3];
figure;
hist(x)
Its working great now! (but you know its a bit of a Frankenstein masterpiece :-)