[R] Deciphering an error message

Uwe Ligges ligges at statistik.uni-dortmund.de
Tue Jul 1 09:19:42 CEST 2003

Suzanne E. Blatt wrote:
> Hello,
> I'm working in spatstat and having difficulty with the ppp objects.  I can get a ppp object for one set of data, but with the same code applied to a second data set (all I am changing is the field identifier), I get the following error message:
> Error in switch(w$type, rectangle={: internal error: some total scores are neither 0 nor 1

What is a "ppp object"?
Which function has been applied and generated that error message?

The error message tells you some values a ought to sum up to 0 or 1 but 
they don't. I (and perhaps others as well) cannot help when you don't 
specify some relevant information.

Uwe Ligges

> Any thoughts on what this means and how to correct it would be most appreciated.
> Thanks,
> Suzanne
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