Hi Barry: There is a routine in PDL::Graphics::PLplot which does just
this. I originally used it to plot a world map from a coastline database.
This is from the test suite for PDL::Graphics::PLplot:
# test of lines with gaps
$pl = PDL::Graphics::PLplot->new (DEV => $dev,
FILE => "test7.$dev");
$x = sequence(10);
$y = $x**2;
$x->inplace->setbadat(5); # insert gap
$y->inplace->setbadat(5); # insert gap
$pl->xyplot($x, $y, PLOTTYPE => 'LINE');
$pl->close;
So, just use the 'xyplot' routine to plot a line, but insert gaps in the
line using BAD values.
Regards,
Doug Hunt
[email protected]
Software Engineer
UCAR - COSMIC, Tel. (303) 497-2611
On Tue, 6 Jul 2010, Barry Hall wrote:
> I need to plot something on the order of 25k line segments in a
> single plot -- just to get a quick look at some GIS data -- is there a
> routine in PDL that takes a line primitive of sorts?
>
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