set logscale <axes> <base> unset logscale <axes> show logscale
where axes
may be any combinations of x, x2, y, y2, z, and cb in
any order, and where
base
is the base of the log scaling. If
base
is not
given, then 10 is assumed. If
axes
is not given, then all axes are assumed.
The command unset logscale turns off log scaling for the specified axes.
Examples:
To enable log scaling in both x and z axes:
set logscale xz
To enable scaling log base 2 of the y axis:
set logscale y 2
To enable z and color log axes for a pm3d plot:
set logscale zcb
To disable z axis log scaling:
unset logscale z