[R] Possible to use array of spline functions for storing data?
dieter.menne at menne-biomed.de
Sat Mar 6 17:41:22 CET 2010
David Winsemius wrote:
> Dear listeRs;
> I am hoping to provide myself the ability to interpolate mortality
> estimates within intervals for a range of conditions and ages. I have
> four mortality tables derived from the Society of Actuaries 2001 VBT
> tables that contains interval mortality rates by starting age and year
> of duration. I would like to flexibly interpolate using a large set
> (~4MM) of ages and conditions as input to small number (~300) of
> functions, but my toy implementations puzzle me when I examine them,
> and I cannot seem to store them properly. Say you start with a vector
> of qx's:
How about using the polynomial representation given be polySpline in package
splines? It a slightly decorated list of knots and coefficients that could
be stored in a database.
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