[R] interp.surface on data frames
Xavier.Abulker@fimat.com
Xavier.Abulker at fimat.com
Thu Jun 20 16:48:58 CEST 2002
Hello R Group
I'm trying to apply the function interp.surface of the following data frame
and it doesn't work
x value is
$Strike
[1] 100 102
y Value is
$Maturity
[1] 25 35
z Value is
ImplVol.100 ImplVol.102
1 0.419177 0.331999
2 0.264417 0.195447
I want to find the value of z for (x,y)=(101,30)
Now I apply
obj<- list( x=x, y=y, z=z)
I define
make.surface.grid( list(c(101,30),c(101,30)))-> loc (I want to interpolate
for (x,y)=(101,30))
and
interp.surface( obj, loc)-> look gives me an error.
could you tell me where I'm wrong?
Thanks
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