Makes a plot with sensitivity values vs. model complexity (e.g. number of components) for classification results.
# S3 method for classres
plotSensitivity(obj, nc = NULL, ...)classification results (object of class plsdares, simcamres, etc.).
if there are several classes, which class to make the plot for (NULL - summary for all classes).
most of the graphical parameters from mdaplot function can be used.