Hold on and hold off in octave-2.9.8

[Joe Koski]

Hi all,

I have a loop in one of my scripts:

for i = 1:num_c2f
  ifig = ifig + 1;
  figure(ifig);
  clg;
  legend('off');
  axis('auto');
  title(['Coarse to Fine ',int2str(i),' vs. Signal']);
  xlabel ("Time, s")
  ylabel ("Amplitude")
  hold on;
  plot(t,x,'r'); 
  plot(t,c2f(i,:),'b');
  hold off;
end

With octave-2.1.73, the "hold on" and "hold off" serve to superimpose the
two plot commands onto one plot frame. With octave-2.9.8, only the second
plot appears in the axes, and the first plot disappears. This is all on my
Mac with octave builds from scratch on OS X 10.4.7, Xcode-2.4, etc.

Has the use of "hold on" changed?

Yes, I can work around it by combining the two plot commands into a single
plot command.

Thanks.

Joe