with parallelaxes dumps core

[Philipp K. J. <ja...@ie...>]

The new plot style "with parallelaxes"
is cute. Unfortunately, it also dumps
core - whenever there are more than 7
columns to plot.

1) This limitation is not mentioned in
the doc. (As far as I can see.)

2) Dumping core unconditionally is not 
a good user experience. It would be
better to detect and reject the illegal
input and warn the user.

3) The limitation to 7 cols (which, I
suspect, depends on limitations in the
way "using" is parsed) puts the entire
plot style into question. The whole 
point of parallelaxes plots (to the 
degree they HAVE a point) is to deal 
with high-dim data, easily exceeding 7.

I like this feature, in principle, but
I am afraid the limitation to 7 columns
really gets in the way.

There is one other thing: for practical 
purposes, the ability to highlight a 
single record (or group of records) in
a parallel axis plot is really, really
important (obviously the best way is 
with the mouse). I tried to plot only
a selected record via "every", but with
a strange results: when selecting a single
record (ev 170::170::) I get NO graph -
just an empty canvas. (No warning either.)

Best,

		Ph.