A fixed scale coordinate system forces a specified ratio between the
physical representation of data units on the axes. The ratio represents the
number of units on the y-axis equivalent to one unit on the x-axis. The
default, `ratio = 1`

, ensures that one unit on the x-axis is the same
length as one unit on the y-axis. Ratios higher than one make units on the
y axis longer than units on the x-axis, and vice versa. This is similar to
`MASS::eqscplot()`

, but it works for all types of graphics.

`coord_fixed(ratio = 1, xlim = NULL, ylim = NULL, expand = TRUE, clip = "on")`

ratio

aspect ratio, expressed as `y / x`

xlim

Limits for the x and y axes.

ylim

Limits for the x and y axes.

expand

If `TRUE`

, the default, adds a small expansion factor to
the limits to ensure that data and axes don't overlap. If `FALSE`

,
limits are taken exactly from the data or `xlim`

/`ylim`

.

clip

Should drawing be clipped to the extent of the plot panel? A
setting of `"on"`

(the default) means yes, and a setting of `"off"`

means no. In most cases, the default of `"on"`

should not be changed,
as setting `clip = "off"`

can cause unexpected results. It allows
drawing of data points anywhere on the plot, including in the plot margins. If
limits are set via `xlim`

and `ylim`

and some data points fall outside those
limits, then those data points may show up in places such as the axes, the
legend, the plot title, or the plot margins.

# NOT RUN { # ensures that the ranges of axes are equal to the specified ratio by # adjusting the plot aspect ratio p <- ggplot(mtcars, aes(mpg, wt)) + geom_point() p + coord_fixed(ratio = 1) p + coord_fixed(ratio = 5) p + coord_fixed(ratio = 1/5) p + coord_fixed(xlim = c(15, 30)) # Resize the plot to see that the specified aspect ratio is maintained # }