# eqscplot

##### Plots with Geometrically Equal Scales

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 2-column matrix, or a list with components

`x`

and`y`

- 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 if`uin`

is specified and of length 2.- tol
proportion of white space at the margins of plot

- uin
desired values for the units-per-inch parameter. If of length 1, the desired units per inch on the x axis.

- …
further arguments for

`plot`

and graphical parameters. Note that`par(xaxs="i", yaxs="i")`

is enforced, and`xlim`

and`ylim`

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

*Documentation reproduced from package MASS, version 7.3-51.4, License: GPL-2 | GPL-3*