(octave.info)Multiple Plots on One Page

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15.2.4 Multiple Plots on One Page
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Octave can display more than one plot in a single figure.  The simplest
way to do this is to use the ‘subplot’ function to divide the plot area
into a series of subplot windows that are indexed by an integer.  For
example,

     subplot (2, 1, 1)
     fplot (@sin, [-10, 10]);
     subplot (2, 1, 2)
     fplot (@cos, [-10, 10]);

creates a figure with two separate axes, one displaying a sine wave and
the other a cosine wave.  The first call to subplot divides the figure
into two plotting areas (two rows and one column) and makes the first
plot area active.  The grid of plot areas created by ‘subplot’ is
numbered in row-major order (left to right, top to bottom).  After
plotting a sine wave, the next call to subplot activates the second
subplot area, but does not re-partition the figure.

 -- : subplot (ROWS, COLS, INDEX)
 -- : subplot (ROWS, COLS, INDEX, HAX)
 -- : subplot (RCN)
 -- : subplot (HAX)
 -- : subplot (..., "align")
 -- : subplot (..., "replace")
 -- : subplot (..., "position", POS)
 -- : subplot (..., PROP, VAL, ...)
 -- : HAX = subplot (...)
     Set up a plot grid with ROWS by COLS subwindows and set the current
     axes for plotting (‘gca’) to the location given by INDEX.

     If an axes handle HAX is provided after the (ROWS, COLS, INDEX)
     arguments, the corresponding axes is turned into a subplot.

     If only one numeric argument is supplied, then it must be a three
     digit value specifying the number of rows in digit 1, the number of
     columns in digit 2, and the plot index in digit 3.

     The plot index runs row-wise; First, all columns in a row are
     numbered and then the next row is filled.

     For example, a plot with 2x3 grid will have plot indices running as
     follows:

          +-----+-----+-----+
          |  1  |  2  |  3  |
          +-----+-----+-----+
          |  4  |  5  |  6  |
          +-----+-----+-----+

     INDEX may also be a vector.  In this case, the new axes will
     enclose the grid locations specified.  The first demo illustrates
     this:

          demo ("subplot", 1)

     The index of the subplot to make active may also be specified by
     its axes handle, HAX, returned from a previous ‘subplot’ command.

     If the option "align" is given then the plot boxes of the
     subwindows will align, but this may leave no room for axes tick
     marks or labels.

     If the option "replace" is given then the subplot axes will be
     reset, rather than just switching the current axes for plotting to
     the requested subplot.

     The "position" property can be used to exactly position the subplot
     axes within the current figure.  The option POS is a 4-element
     vector [x, y, width, height] that determines the location and size
     of the axes.  The values in POS are normalized in the range [0,1].

     Any property/value pairs are passed directly to the underlying axes
     object.

     If the output HAX is requested, subplot returns the axes handle for
     the subplot.  This is useful for modifying the properties of a
     subplot using ‘set’.

     See also: Note: axes, Note: plot, *note gca:
     XREFgca, Note: set.