Library: | fda |
See also: | fdamean plotfd grfd evalfd data2fd |
Quantlet: | evalfdavar | |
Description: | Evaluates the variance function of functional data object FD, at argument values in an array EVALARG |
Usage: | fdavar = evalfdavar(evalarg,fdobject) | |
Input: | ||
evalarg | m x 1 vector for evaluation | |
fdobject | list, functional object (fd object) with n replications | |
Output: | ||
fdavar | m x 1 vector, values of var(t) at evalarg |
library("fda") y = read("dailtemp.dat") tvec=#(1:365)/365 fdb = createfdbasis("fourier", #(0,1),31,1) fdtempf31=data2fd(y,tvec,fdb) fdavarf=evalfdavar(grid(0,1/100,99),fdtempf31) fdavarf
The var function for temperature dataset is printed, using 31 Fourier functions