plxormod.3plplot man page

plxormod — Enter or leave xor mode


plxormod(mode, status)


Enter (when mode is true) or leave (when mode is false) xor mode for those drivers (e.g., the xwin driver) that support it.  Enables erasing plots by drawing twice the same line, symbol, etc.  If driver is not capable of xor operation it returns a status of false.

Redacted form: plxormod(mode, status)

This function is used in examples 1,20.


mode (PLBOOL, input)

mode is true means enter xor mode and mode is false means leave xor mode.

status (PLBOOL *, output)

Pointer to status. Returned modestatus of true (false) means driver is capable (incapable) of xor mode.


Many developers (who are credited at have contributed to PLplot over its long history.

See Also

PLplot documentation at


August, 2015 PLplot API