matlab, comparing matrixs?

hedpe · 10-27-2006, 11:38 PM

Hey everyone,

I have two files which contain numbers such as:

Code:

gnychis@monster ~/school/thesis/host_analysis/detection $ cat test1
1
2
3
4
gnychis@monster ~/school/thesis/host_analysis/detection $ cat test2
2
3

Here is the current status of my script, i read in both files to matrixes:

Code:

function [] = correlations ( filename1, filename2);  % read in params
warning off

[set1] = textread(filename1, '%d');
[set2] = textread(filename2, '%d');

set1
set2

So if I run it with "sets_test test1 test2" i see:

Code:

Now what I want to do is be able to say something like "2 out of 2 values from set2 exist in set1" and "2 out of 4 values from set1 exist in set2"

So I am looking for some way to compare the two matrix and how many elements from one belong in the other. I'd greatly appreciate any help!

Thanks!
George

Quigi · 10-28-2006, 01:17 PM

Below I assume the values are all distinct, as in your example. Matlab uses matrices to represent everything, but the above look like plain lists. So I'm not using matlab but plain old Unix tools (after all it's Linuxquestions.org):

Code:

wc -l test{1,2}

tells you the "of 4 in test1" and "of 2 in test2" part. (You can ignore the "total 6" line at the end.)

Code:

sort test{1,2} | uniq -d | wc -l

tells you there are 2 lines (matrix element values) in common.

If that doesn't solve your problem, please tell us, and maybe post a more realistic example.