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<H2><A NAME="SECTION0402460000000000000000"></A>
<A NAME="commands_set_size"></A><A NAME="commands_show_size"></A><A NAME="set_size"></A><A NAME="show_size"></A><A NAME="size"></A><A NAME="6169"></A>
<A NAME="aspect_ratio"></A>
<BR>
Size
</H2>
Syntax:
<BR>
<PRE>
set size {{no}square | ratio <r> | noratio} {<xscale>,<yscale>}
show size
</PRE>
<BR>
<P>
The 4#4xscale5#5 and 4#4yscale5#5 values are scale factors for the size of the plot,
which includes the graph, labels, and margins.
<P>
Important note:
<BR>
<PRE>
In earlier versions of gnuplot, some terminal types used the values from
`set size` to control also the size of the output canvas; others did not.
In version 4.4 almost all terminals now follow the following convention:
</PRE>
<BR>
<P>
<B>set term 4#4terminal_type5#5 size 4#4XX5#5, 4#4YY5#5</B> controls the size of the output
file, or <B>canvas</B>. Please see individual terminal documentation for allowed
values of the size parameters. By default, the plot will fill this canvas.
<P>
<B>set size 4#4XX5#5, 4#4YY5#5</B> scales the plot itself relative to the size of the
canvas. Scale values less than 1 will cause the plot to not fill the entire
canvas. Scale values larger than 1 will cause only a portion of the plot to
fit on the canvas. Please be aware that setting scale values larger than 1
may cause problems on some terminal types.
<P>
<B>ratio</B> causes <B>gnuplot</B> to try to create a graph with an aspect ratio of 4#4r5#5
(the ratio of the y-axis length to the x-axis length) within the portion of
the plot specified by 4#4xscale5#5 and 4#4yscale5#5.
<P>
The meaning of a negative value for 4#4r5#5 is different. If 4#4r5#5=-1, gnuplot
tries to set the scales so that the unit has the same length on both the x
and y axes (suitable for geographical data, for instance). If 4#4r5#5=-2, the
unit on y has twice the length of the unit on x, and so on.
<P>
The success of <B>gnuplot</B> in producing the requested aspect ratio depends on
the terminal selected. The graph area will be the largest rectangle of
aspect ratio 4#4r5#5 that will fit into the specified portion of the output
(leaving adequate margins, of course).
<P>
<B>square</B> is a synonym for <B>ratio 1</B>.
<P>
Both <B>noratio</B> and <B>nosquare</B> return the graph to the default aspect ratio
of the terminal, but do not return 4#4xscale5#5 or 4#4yscale5#5 to their default
values (1.0).
<P>
<B>ratio</B> and <B>square</B> have no effect on 3D plots, but do affect 3D projections
created using <B>set view map</B>. See also <B>set view equal (p. <A HREF="node286.html#set_view_equal"><IMG ALIGN="BOTTOM" BORDER="1" ALT="[*]" SRC="crossref.png"></A>)<A NAME="6189"></A></B>, which forces
the x and y axes of a 3D onto the same scale.
<P>
Examples:
<P>
To set the size so that the plot fills the available canvas:
<BR>
<PRE>
set size 1,1
</PRE>
<BR>
<P>
To make the graph half size and square use:
<BR>
<PRE>
set size square 0.5,0.5
</PRE>
<BR>
<P>
To make the graph twice as high as wide use:
<BR>
<PRE>
set size ratio 2
</PRE>
<BR>
<P>
See also
<P>
http://www.gnuplot.info/demo/airfoil.html<TT>airfoil demo.
</TT>
<P>
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<ADDRESS>
2010-08-17
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