R Under development (unstable) (2025-05-21 r88220 ucrt) -- "Unsuffered Consequences"
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> # some tests to ensure that modifications don't change
> # the global behaviour of Time*DataFrame
> 
> #=====================
> # TimeInstantDataFrame
> library( timetools )
> 
> tidf <- TimeInstantDataFrame(as.POSIXct(sprintf('2012-01-%02i', 4:8), 'UTC'),
+ 	'CET', data.frame(un=1:5, two=6:10))
> tidf
                     when un two
1 2012-01-04 01:00:00 CET  1   6
2 2012-01-05 01:00:00 CET  2   7
3 2012-01-06 01:00:00 CET  3   8
4 2012-01-07 01:00:00 CET  4   9
5 2012-01-08 01:00:00 CET  5  10
> timezone(tidf) <- 'UTC'
> tidf
            when un two
1 2012-01-04 UTC  1   6
2 2012-01-05 UTC  2   7
3 2012-01-06 UTC  3   8
4 2012-01-07 UTC  4   9
5 2012-01-08 UTC  5  10
> tidf[3:4,'two']
            when two
3 2012-01-06 UTC   8
4 2012-01-07 UTC   9
> when(tidf)
[1] "2012-01-04 UTC" "2012-01-05 UTC" "2012-01-06 UTC" "2012-01-07 UTC"
[5] "2012-01-08 UTC"
> 
> tidf <- TimeInstantDataFrame(as.POSIXct(sprintf('2012-01-%02i', 4:8), 'CET'),
+ 	'UTC', data.frame(un=1:5, two=6:10))
> tidf
                     when un two
1 2012-01-03 23:00:00 UTC  1   6
2 2012-01-04 23:00:00 UTC  2   7
3 2012-01-05 23:00:00 UTC  3   8
4 2012-01-06 23:00:00 UTC  4   9
5 2012-01-07 23:00:00 UTC  5  10
> timezone(tidf) <- 'CET'
> tidf
            when un two
1 2012-01-04 CET  1   6
2 2012-01-05 CET  2   7
3 2012-01-06 CET  3   8
4 2012-01-07 CET  4   9
5 2012-01-08 CET  5  10
> tidf[3:4,'two']
            when two
3 2012-01-06 CET   8
4 2012-01-07 CET   9
> when(tidf)
[1] "2012-01-04 CET" "2012-01-05 CET" "2012-01-06 CET" "2012-01-07 CET"
[5] "2012-01-08 CET"
> 
> split( tidf, c(rep('C', 3), rep('A', 2)) )
$A
            when un two
4 2012-01-07 CET  4   9
5 2012-01-08 CET  5  10

$C
            when un two
1 2012-01-04 CET  1   6
2 2012-01-05 CET  2   7
3 2012-01-06 CET  3   8

> 
> #======================
> # TimeIntervalDataFrame
> 
> tidf <- TimeIntervalDataFrame(as.POSIXct(sprintf('2012-01-%02i', 4:9), 'UTC'),
+ 	tiemzone='CET', data=data.frame(un=1:5, two=6:10))
> tidf
           start            end un two
1 2012-01-04 UTC 2012-01-05 UTC  1   6
2 2012-01-05 UTC 2012-01-06 UTC  2   7
3 2012-01-06 UTC 2012-01-07 UTC  3   8
4 2012-01-07 UTC 2012-01-08 UTC  4   9
5 2012-01-08 UTC 2012-01-09 UTC  5  10
> timezone(tidf) <- 'UTC'
> tidf
           start            end un two
1 2012-01-04 UTC 2012-01-05 UTC  1   6
2 2012-01-05 UTC 2012-01-06 UTC  2   7
3 2012-01-06 UTC 2012-01-07 UTC  3   8
4 2012-01-07 UTC 2012-01-08 UTC  4   9
5 2012-01-08 UTC 2012-01-09 UTC  5  10
> tidf[3:4,'two']
           start            end two
3 2012-01-06 UTC 2012-01-07 UTC   8
4 2012-01-07 UTC 2012-01-08 UTC   9
> when(tidf)
[1] "2012-01-04 00:00:00 <-> 2012-01-05 00:00:00"
[2] "2012-01-05 00:00:00 <-> 2012-01-06 00:00:00"
[3] "2012-01-06 00:00:00 <-> 2012-01-07 00:00:00"
[4] "2012-01-07 00:00:00 <-> 2012-01-08 00:00:00"
[5] "2012-01-08 00:00:00 <-> 2012-01-09 00:00:00"
> start(tidf)
[1] "2012-01-04 UTC" "2012-01-05 UTC" "2012-01-06 UTC" "2012-01-07 UTC"
[5] "2012-01-08 UTC"
> end(tidf)
[1] "2012-01-05 UTC" "2012-01-06 UTC" "2012-01-07 UTC" "2012-01-08 UTC"
[5] "2012-01-09 UTC"
> 
> tidf <- TimeIntervalDataFrame(as.POSIXct(sprintf('2012-01-%02i', 4:9), 'CET'),
+ 	timezone='UTC', data=data.frame(un=1:5, two=6:10))
> tidf
                    start                     end un two
1 2012-01-03 23:00:00 UTC 2012-01-04 23:00:00 UTC  1   6
2 2012-01-04 23:00:00 UTC 2012-01-05 23:00:00 UTC  2   7
3 2012-01-05 23:00:00 UTC 2012-01-06 23:00:00 UTC  3   8
4 2012-01-06 23:00:00 UTC 2012-01-07 23:00:00 UTC  4   9
5 2012-01-07 23:00:00 UTC 2012-01-08 23:00:00 UTC  5  10
> timezone(tidf) <- 'CET'
> tidf
           start            end un two
1 2012-01-04 CET 2012-01-05 CET  1   6
2 2012-01-05 CET 2012-01-06 CET  2   7
3 2012-01-06 CET 2012-01-07 CET  3   8
4 2012-01-07 CET 2012-01-08 CET  4   9
5 2012-01-08 CET 2012-01-09 CET  5  10
> tidf[3:4,'two']
           start            end two
3 2012-01-06 CET 2012-01-07 CET   8
4 2012-01-07 CET 2012-01-08 CET   9
> when(tidf)
[1] "2012-01-04 00:00:00 <-> 2012-01-05 00:00:00"
[2] "2012-01-05 00:00:00 <-> 2012-01-06 00:00:00"
[3] "2012-01-06 00:00:00 <-> 2012-01-07 00:00:00"
[4] "2012-01-07 00:00:00 <-> 2012-01-08 00:00:00"
[5] "2012-01-08 00:00:00 <-> 2012-01-09 00:00:00"
> start(tidf)
[1] "2012-01-04 CET" "2012-01-05 CET" "2012-01-06 CET" "2012-01-07 CET"
[5] "2012-01-08 CET"
> end(tidf)
[1] "2012-01-05 CET" "2012-01-06 CET" "2012-01-07 CET" "2012-01-08 CET"
[5] "2012-01-09 CET"
> 
> 
> proc.time()
   user  system elapsed 
   0.43    0.10    0.53