11.52.80 xlabel

set <axis>label <text> [ rotate <angle> ]

The setting xlabel sets the label which should be written along the x-axis. For example,

set xlabel '$x$'

sets the label on the x-axis to read ‘$x$’. Labels can be placed on higher numbered axes by inserting their number after the ‘x’; for example,

set x10label 'foo'

would label the tenth horizontal axis. Similarly, labels can be placed on vertical axes as follows:

set ylabel '$y$'
set y2label 'foo'

An optional rotation angle may be specified to rotate axis labels clockwise by arbitrary angles. The angle should be specified either as a dimensionless number of degrees, or as a quantity with physical dimensions of angle.