Displaying 3 results from an estimated 3 matches for "npolysplin".
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npolyspline
2011 May 23
0
Error in backSpline.npolySpline(sp) : spline must be monotone
I get the following error:
Error in backSpline.npolySpline(sp) : spline must be monotone
Has anyone had this error before? any ideas on a workaround?
>
> vols=read.csv(file="C:/Documents and Settings/Hugh/My
> Documents/PhD/Swaption vols.csv"
+ , header=TRUE, sep=",")
> X<-ts(vols[,2])
> #X
>
>
> dcOU&...
2002 Apr 22
1
predict.*bSpline() bugs extrapolating for deriv >= 1 (PR#1473)
...epresentation
(isB <- interpSpline(x,y, bSpl = TRUE))# B-spline repr.
xo <- c(0, x, 10)# x + outside points
options(digits = 4)
for(der in 0:3) # deriv=3 fails!
print(formatC(try(predict(isP, xo, deriv = der)$y), wid=7,format="f"),
quote = FALSE)
##- Error in predict.npolySpline(isP, xo, deriv = der) :
##- subscript out of bounds
## Same for B-spline (instead of Polynom.):
for(der in 0:3) # deriv=3 fails!
print(formatC(try(predict(isB, xo, deriv = der)$y), wid=7,format="f"),
quote = FALSE)
##- Error in predict.nbSpline(isB, xo, deriv = der) :
#...
1998 Apr 07
3
R-beta: spline problems(?)
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)
Apparently, this is caused by the last command of spline:
u <- seq(xmin, xmax, length.out = n)
.C("spline_eval", z$method, length(u), x = u, y =