To reset all the chart parameters to the current defaults:

ch.Reset

This may be used in conjunction with ch.NewCell as this leaves all options unchanged on the assumption that you are plotting a series of small multiples which should all have the same settings. An alternative would be to set the trellis-style as ‘reset’ here.

See also ...
ch.NewCell – advance to next cell in trellis
TrellisStyle – trellis style