Great!

2011/9/24 <Adrian.Baddeley@csiro.au>

> Mathieu Rajerison and Michael Sumner reported two bugs arising when a
> pattern of line segments is plotted.
> Mike traced the bugs to spatstat:::plot.psp and spatstat:::pointsOnLines.
> Errors occurred if a mark value was NA or if a segment had zero length.
>
> These bugs have been fixed in the latest release of spatstat, 1.23-5,
> released yesterday.
>
> Special thanks to Mike for troubleshooting.
>
> Adrian Baddeley

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