had no result. Nor did
Eventually, I sent off an enquiry to jpGraph - and back came a very prompt reply (from the Far East):
in version 3.5.0b1, methods to change designs of each plot should be used after $graph->add($plot) method.
This is really counter-intuitive. But it works.
So it goes like this
There is a note in the documentation included as part of the package, at: