a character string specifying the name of the column containing the values to be plotted, e.g. "SigIntensity"
plotTitle
the plot title
showPlot
0 or 1. 1 will open one or several plot windows in the R GUI, 0 will only save the plot(s) without opening windows.
Value
Saves the QQ plot in a pdf and a png file named after the experiment name specified in the header concatenated with the plotTitle.The function returns the plot name.