How to do boxplot for vectors with differents lenghts?

Hello everyone.

I have 3 files with 1 vector each, and each vector has a different size. File 1 has a vector with 12646482 lines. File 2 has 14486045 and file 3 has 108052. I tried to do this:

clear all;
close all;

bb = load('/home/Documents/file1.txt');
mm = load('/home/Documents/file2.txt');
aa = load('/home/Documents/file3.txt');

x1 = rand(12646482,1);
x2 = rand(14486045,1);
x3 = rand(108052,1);

x = [x1;x2;x3];

nn = [bb; mm; aa];

boxplot(x, nn);

But I did not succeed. How can I solve this? Thank you!

Answer 1

[Cris LaPierre]

How many boxplots would you like to see? I assume one for each file.

Use the documentation to help you get the syntax right. This example should help as well. Note that the grouping data is the second input, not the first.

I'd modify your code as follows

bb = load('/home/Documents/file1.txt');
mm = load('/home/Documents/file2.txt');
aa = load('/home/Documents/file3.txt');

% I'm assuming your data is a column vector
bb(:,2) = 1;
mm(:,2) = 2;
aa(:,2) = 3;

nn = [bb; mm; aa];

boxplot(nn(:,1),nn(:,2));

[pink flower]

I just want a boxplot with three boxes.