| 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