R-beta: spline problems(?)

[Ross Ihaka]

A. Tsiolakidis writes:
 > Hi,
 > 
 > I am a total beginner with this whole thing so please have patience!
 > 
 > I am trying to run an S-plus program with a certain line:
 > 	spline(1:nrow(y), y[,1],n=100);
 > 
 > This crashes with:
 > 	Error: NAs in foreign function call (arg 8)

You have uncovered an error in the underlying spline code.
I think its related to the fact that you are fitting a curve
through points on a straight line.  I'll have a look.

Other cases look ok.

	Ross
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