This question might seem silly, because I felt that it MUST be in the
mailing list archives or help files somewhere, but I simply couldn't find
it.
I want to make some simple CDF (cumulative distribution function) plots
to check whether distributions are Gaussian / normal. But in order to check
how "normal" the distribution is, I really need the y-axis to be Gaussian as
well (meaning that the axis is not linearly scaled), so that if the
distribution is indeed normal then the plot will be a straight line.
I looked up cdf.plot (on the spsurvey package) and ecdf. They are both
fine, but neither have any way (that I can see) to alter the scale on the
y-axis so that it is not linear in the probability. How do I do this?
As long as I am asking: I also want to plot more than one distribution
or group. For instance, I want to plot 3 different factors on the same
graph, where each factor has it's own cdf line. Any ideas for this?
THanks in advance!
Mike Williamson
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