Description Usage Arguments Details Value
qqplotter
returns a pdf file containing the
QQ-plot for a given set of p-values
1 2 3 |
p_values |
A vector or a column in a data-set
containing p-values to plot. This is an alternative to
|
res.file |
File name of the |
p.num.col |
Number indicating which column of the
|
sep |
File separator to be used when reading
|
title |
Title to appear on the plot. |
out.file |
File name for the output plot. |
The function is useful for comparing expected and observed distributions of statistics arising from genome-wide testing. Two different types of input are allowed:
an object such as vector or data-frame column, containing p-values;
a file name and the column number for retrieving p-values from file. Note that separator is set to white space, can be changed accordingly if needed. The special character "*" is allowed for selecting more than on file (e.g. in case there is one file for each chromosome) but the p-values column position must be the same for all files.
The output will be a pdf file containing the QQplot.
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