New
Xipe is a statistical comparison program written by Beltran Rodriguez-Muller at San Deigo State University . Xipe provides a non-parametric statistical analysis of the distribution of samples to determine which samples are statistically significantly different.
Xipe is designed to compare two different populations, and identify the differences between those samples. It is not designed, nor is it really appropriate, to use it with more than two samples. For that, you should use a multivariate statistical analysis like PCA, CDA, or something similar.
Xipe uses the follwoing procedure:
Xipe was designed to identify the differences in functions between microbial metagenomes. However, xipe can be used to determine the statistically significant differences between any samples, provided you have a name and a frequency.
We have a version of xipe written in Python and that does not require matlab. This command is simpler than that above and should work with Python 2.6 or 2.7. Try this version.
You can download the xipe version used here for your analysis. Use the runxipe command to run xipe
Typically, we make a control file (called control.txt), that looks like this:
xipe/input.1 xipe/input.2 [0.98] [5000] xipe/output
The file input.1 and input.2 are the two input files, the [0.98] is the confidence level, and the [5000] is the sample size. Then you can use runxipe < control.txt to run the command
Retrieve the results from a previous submission
To use xipe, you need to have a list of the functions present in your sample, and the counts of those functions. You can paste data into this website (or upload files), and run xipe to identify the differences in samples. Please make sure that you use the appropriate format (they are slightly different).
Please paste the funtions and counts joined with a colon (:) or a comma (,). For example:
function 1 : 2134 function 2 : 12 function 3 , 1444
Please use tab separated text for file uploads, with the functions separated from the counts by a tab