Histogram Overwrites Previous Plot

[Nugget_Mon]

Hello,
I am trying to overlay a nomal PDF over a histogram.

I found the following:

"Combining histograms and function plots by Toke Reichstein Jan 29, 2003;
09:45am :"

I have used the solution there but came up with the same result. Whenever I
call hist(), it overwrites whatever is plotted. The same goes for plotting
the PDF after plotting the histogram, whether hold is on or not.

Octave version 3.0.0
Ubuntu 8.04
AMD64

Thank you.
Mon
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