[rrd-developers] Re: Problem with perl (RRDs::graph) on XP, using Jun 10 snapshot

[Alex van den Bogaerdt]

Jake Brutlag wrote:
> I just
> tried running make test on a Solaris box and under bindings/perl-shared
> and the graph tests generate a large number of error messages (the
> colinear message). It does apparently generate the png files, but it is
> not clear to me that the graphs produced are correct.

This seems to come from libart:

   art_svp_wind.c: fprintf (stderr, "colinear!\n");
   art_svp_wind.c: fprintf (stderr, "colinear!\n");
   art_svp_wind.c:  fprintf (stderr, "x_order_2: colinear!\n");

> It looks like Alex or Toby (or someone else more familiar with the graph
> code) should give this a try and assess if (1) the graphs are correct,
> and (2) the error messages are legitimate. If the the graphs are okay,
> then the error messages should be cleaned up or returned properly via
> RRDs::Error. It looks like the errors are just spewed to stdout, which
> could be crashing your perl environment.

I'm not really familiar with libart.  I think (so: not sure) it has to
do with drawing boxes the wrong way around.  Anti-clockwise vs. clockwise.

Tobi will know.  Tobi?
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