Hi,

Have any of you ever encountered a situation where R stops processing an
instruction but does not give a "not responding" message?

The reason I ask is I am working in RStudio (Mac OS/X 10.7, 1.8 Ghz i7, 4
GB DDR3) and the instruction I entered in the command line pane is still
being processed since last night around 7 PM.  I expected it to take on the
order of 8-12 hours to complete, but I'm nearing 24 hours with no progress,
no messages, etc.

The command is essentially splitting the a ppp (marked point pattern) into
a tessellation/grid.  There are about a couple million points in the
pattern and each has a vector of four marks.  That said, I processed a
similar command with 700,000 points in the pattern (each point with a
vector of two marks) yesterday and it took only around 3 hours.

Is there anyway I can be certain the command is being processed?  I don't
want to abort prematurely if I know it will go to completion.  How long
would you give it before you knew for certain it would not complete?

Any guidance you could offer would be much appreciated.

Thanks,
Lily

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