Creates a histogram showing distribution of fold differences
in abundance of parasites between left and right sides of host.
Usage
plotHistogram(x, nBreaks = 10, ...)
Arguments
x
a matrix or data frame with two numeric columns;
first column is for left-side and 2nd column for right-side.
Identifiers for hosts can be provided as row names.
nBreaks
number of cells for the histogram. A suggestion
only; breakpoints will be set to pretty values.
...
optional further arguments and graphical parameters
passed to plot.
Details
plot.Histogram creates a histogram showing distribution of fold differences
in abundance of parasites between left and right sides. For each infected host the
number of parasites on the right side is divided by the number of parasites
on the left side, and the result binary log transformed. The log2 ratio will
be negative if there are more parasites on the left than right and positive
if there are more parasites on the right than left. A log2 ratio of one
corresponds to a one-fold difference, i.e. double the number of parasites.
Perfect symmetry is a log2 ratio of zero.