eqscplot
From MASS v7.347
by Brian Ripley
Version of a scatterplot with scales chosen to be equal on both axes, that is 1cm represents the same units on each
 Keywords
 hplot
Usage
eqscplot(x, y, ratio = 1, tol = 0.04, uin, …)
Arguments
 x

vector of x values, or a 2column matrix, or a list with components
x
andy
 y
 vector of y values
 ratio

desired ratio of units on the axes. Units on the y axis are drawn at
ratio
times the size of units on the x axis. Ignored ifuin
is specified and of length 2.  tol
 proportion of white space at the margins of plot
 uin
 desired values for the unitsperinch parameter. If of length 1, the desired units per inch on the x axis.
 …

further arguments for
plot
and graphical parameters. Note thatpar(xaxs="i", yaxs="i")
is enforced, andxlim
andylim
will be adjusted accordingly.
Details
Limits for the x and y axes are chosen so that they include the
data. One of the sets of limits is then stretched from the midpoint to
make the units in the ratio given by ratio
. Finally both are
stretched by 1 + tol
to move points away from the axes, and the
points plotted.
Value
invisibly, the values of uin
used for the plot.
Note
Arguments ratio
and uin
were suggested by Bill Dunlap.
Side Effects
performs the plot.
References
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.
See Also
Community examples
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