pkg/tests/testthat/helper.R

   1 #shorthand: map 1->1, 2->2, 3->3, 4->1, ..., 149->2, 150->3
   2 I = function(i)
   3     (i-1) %% 3 + 1
   4
   5 #MOCK data; NOTE: could be in inst/testdata as well
   6 getDataTest = function(n)
   7 {
   8     data = Data$new()
   9     x = seq(0,9.5,0.1)
  10     L = length(x) #96 1/4h
  11     s1 = cos(x)
  12     s2 = sin(x)
  13     s3 = c( s1[1:(L%/%2)] , s2[(L%/%2+1):L] )
  14     #sum((s1-s2)^2) == 96
  15     #sum((s1-s3)^2) == 58
  16     #sum((s2-s3)^2) == 38
  17     s = list(s1, s2, s3)
  18     series = list()
  19     for (i in seq_len(n))
  20     {
  21         serie = s[[I(i)]] + rnorm(L,sd=0.01)
  22         # 10 series with NAs for index 2
  23         if (I(i) == 2 && i >= 60 && i<= 90)
  24             serie[sample(seq_len(L),1)] = NA
  25         time = as.POSIXct((i-1)*60*60*24+15*60*(1:96), origin="2007-01-01", tz="GMT")
  26         exo = runif(4)
  27         exo_hat = runif(4)
  28         data$append(time=time, value=serie, exo=exo, exo_hat=exo_hat)
  29     }
  30     data
  31 }