FreeMat: SUBPLOT Subplot Function

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SUBPLOT Subplot Function

Section: Handle-Based Graphics

# Usage

This function divides the current figure into a 2-dimensional grid, each of which can contain a plot of some kind. The function has a number of syntaxes. The first version

       subplot(row,col,num)

which either activates subplot number `num`, or sets up a subplot grid of size `row x col`, and then activates `num`. You can also set up subplots that cover multiple grid elements

       subplot(row,col,[vec])

where `vec` is a set of indexes covered by the new subplot. Finally, as a shortcut, you can specify a string with three components

       subplot('mnp')

or using the alternate notation

       subplot mnp

where `m` is the number of rows, `n` is the number of columns and `p` is the index. You can also specify the location of the subplot explicitly using the syntax

       subplot('position',[left bottom width height])

# Example

Here is the use of `subplot` to set up a `2 x 2` grid of plots

    --> t = linspace(-pi,pi);
    --> subplot(2,2,1)
    --> plot(t,cos(t).*exp(-2*t));
    --> subplot(2,2,2);
    --> plot(t,cos(t*2).*exp(-2*t));
    --> subplot(2,2,3);
    --> plot(t,cos(t*3).*exp(-2*t));
    --> subplot(2,2,4);
    --> plot(t,cos(t*4).*exp(-2*t));

Here we use the second form of `subplot` to generate one subplot that is twice as large.

    --> t = linspace(-pi,pi);
    --> subplot(2,2,[1,2])
    --> plot(t,cos(t).*exp(-2*t));
    --> subplot(2,2,3);
    --> plot(t,cos(t*3).*exp(-2*t));
    --> subplot(2,2,4);
    --> plot(t,cos(t*4).*exp(-2*t));

Note that the subplots can contain any handle graphics objects, not only simple plots.

    --> t=0:(2*pi/100):(2*pi);
    --> x=cos(t*2).*(2+sin(t*3)*.3);
    --> y=sin(t*2).*(2+sin(t*3)*.3);
    --> z=cos(t*3)*.3;
    --> subplot(2,2,1)
    --> plot(t,x);
    --> subplot(2,2,2);
    --> plot(t,y);
    --> subplot(2,2,3);
    --> plot(t,z);
    --> subplot(2,2,4);
    --> tubeplot(x,y,z,0.14*sin(t*5)+.29,t,10)
    --> axis equal
    --> view(3)