[R] Deciphering an error message

[Uwe Ligges]

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
> 
> __________________________________________________________________
> McAfee VirusScan Online from the Netscape Network.
> Comprehensive protection for your entire computer. Get your free trial today!
> http://channels.netscape.com/ns/computing/mcafee/index.jsp?promo=393397
> 
> Get AOL Instant Messenger 5.1 free of charge.  Download Now!
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help