Section: Handle-Based Graphics
hold(state)
where state
is either
hold('on')
to turn hold on, or
hold('off')
to turn hold off. If you specify no argument then
hold
toggles the state of the hold:
hold
You can also specify a particular axis to the hold command
hold(handle,...)
where handle
is the handle for a particular axis.
hold
function allows one to construct a plot sequence
incrementally, instead of issuing all of the plots simultaneously
using the plot
command.
hold
command and the
multiple-argument plot
command to construct a plot composed
of three sets of data. The first is a plot of a modulated Gaussian.
--> x = linspace(-5,5,500); --> t = exp(-x.^2); --> y = t.*cos(2*pi*x*3); --> plot(x,y); --> quit
We now turn the hold state to 'on'
, and add another plot
sequence, this time composed of the top and bottom envelopes of
the modulated Gaussian. We add the two envelopes simultaneously
using a single plot
command. The fact that hold
is
'on'
means that these two envelopes are added to (instead of
replace) the current contents of the plot.
--> plot(x,y); --> hold on --> plot(x,t,'g-',x,-t,'b-') --> quit