Re: with parallelaxes dumps core

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

[snip]

> 
> If you have such a use-case, go ahead and file a
> feature request.  It should not be too hard to make
> the axis structures dynamic rather than static.
> The original request for this feature provided examples
> from the literature but none of them had even as many
> as 7 axes in a single plot.  So that seemed
> adequate as a default.  Failing to check for more
> columns of input than expected is purely a bug.

Yes, it should definitely be dynamic - and
the question is whether there is a better 
way of doing it than having to enter all
cols explicitly. 

Regarding "references": my book (1st ed)
contains an example with 9 columns... 
Unwin's book "Graphics of Large Datasets"
shows one w/ 20 cols (p153). It's a moot
point, anyway, because an arbitrary limitation 
of cols is counter to the spirit of this method. 
(For practical reasons one may want to limit it, 
but at a high number - 150 or so.)

[snip]

> > 
> > 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.)

Did you see this, too? Both the need to 
highlight records, and the odd behavior
with "every"?