Graphics Programs Reference
In-Depth Information
>> x = [[1 2 3 4]' [2 3 4 5]' [3 4 5 6]']
x=
1
2
3
2
3
4
3
4
5
4
5
6
>> plot(x,q)
>> grid
4.4 Clearing the Figure Window
You can clear the plot window by typing
clf
, which stands for 'clear
figure'. To get rid of a figure window entirely, type
close
. To get rid
of all the figure windows, type
close all
. New figure windows can be
created by typing
figure
.
4.5 Subplots
To plot more than one set of axes in the same window, use the
subplot
command. You can type
subplot(m,n,p)
to break up the plotting window into
m
plots in the vertical direction
and
n
plots in the horizontal direction, choosing the
p
th plot for drawing
into. The subplots are counted as you read text: left to right along the
top row, then left to right along the second row, and so on. Here is an
example (do not forget to use the
↑
key to save typing):
t = 0:.1:2*pi;
subplot(2,2,1)
plot(cos(t),sin(t))
subplot(2,2,2)
plot(cos(t),sin(2*t))
subplot(2,2,3)
plot(cos(t),sin(3*t))
subplot(2,2,4)
plot(cos(t),sin(4*t))
If you want to clear one of the plots in a subplot without affecting
the others you can use the
cla
(clear axes) command. Continuing the
previous example:
