problem with "hold" command

[Rockwood, Alan]

I am having a problem with the "hold" command in octave 2.1.31. I have an
m-file that  includes the following lines near the end of the program:

plot(TS,'.')
title(['Savitzky-Golay ' num2str(pit) ' points , degree = ' num2str(m)])
hold on
plot(TSP)
hold off

The problem is that "hold" doesn't work properly. The program is supposed to
overly a second plot over a first plot. However ends up erasing the first
plot and showing only the second plot. Interestingly, if I remove the "on"
and "off" parameters then the program works as expected, i.e. the "hold"
command toggles between the"on" and "off" states, and it overlays the plots.
Of course, this is not a good solution because the results depend on the
previous state of "hold".

What can I do to make "hold on" and "hold off" work?



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