This function sets the apparent ratios of the x, y, and z axes of the current bounding box.
aspect3d(x, y = NULL, z = NULL)
The ratio for the x axis, or all three ratios, or
The ratio for the y axis
The ratio for the z axis
If the ratios are all 1, the bounding box will be displayed as a cube approximately filling the display.
Values may be set larger or smaller as desired. Aspect
"iso" signifies that the
coordinates should all be displayed at the same scale, i.e. the bounding box should not be
rescaled. (This corresponds to the default display before
aspect3d has been called.)
Partial matches to
"iso" are allowed.
aspect3d works by modifying
The previous value of the scale is returned invisibly.