
R version 4.2.0 (2022-04-22) -- "Vigorous Calisthenics"
Copyright (C) 2022 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> # Sys.setenv(TZ="Europe/Berlin")
> Sys.setenv(TZ="UTC")
> 
> library(sp)
> library(spacetime)
> data(air)
> rural = STFDF(stations, dates, data.frame(PM10 = as.vector(air)))
> 
> rr <- rural[,"2005-06"]
> 
> # conversion
> rrSTFDF <- as(rr, "STFDF")
> rrSTF <- as(rr, "STF")
> 
> rrSTSDF <- as(rr, "STSDF")
> rrSTS <- as(rr, "STS")
> 
> rrSTIDF <- as(rr, "STIDF")
> rrSTI <- as(rr, "STI")
> 
> # selection types
> # STF..
> rrSTFDF[1:2,3:4] # returns 4 values
An object of class "STFDF"
Slot "data":
    PM10
1 20.696
2 21.042
3 17.542
4 14.625

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-03      2711
2005-06-04      2712

Slot "endTime":
[1] "2005-06-04 UTC" "2005-06-05 UTC"

> rrSTFDF[1:2,4:3] # returns 4 values
An object of class "STFDF"
Slot "data":
    PM10
1 20.696
2 21.042
3 17.542
4 14.625

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-03      2711
2005-06-04      2712

Slot "endTime":
[1] "2005-06-04 UTC" "2005-06-05 UTC"

> rrSTFDF[cbind(2:1, 3:4)] # coerces matrix to vector, returns all time instances
An object of class "STSDF"
Slot "data":
      PM10
142 21.042
211 17.542

Slot "index":
     [,1] [,2]
[1,]    1    1
[2,]    2    2

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DENI063  9.685030  53.52418
DESH001  9.585911  53.67057
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-03      2711
2005-06-04      2712

Slot "endTime":
[1] "2005-06-04 UTC" "2005-06-05 UTC"

> 
> rrSTF[2:1,] # returns 2 spatial and 2 temporal instances -> 4 instances
An object of class "STF"
Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DENI063  9.685030  53.52418
DESH001  9.585911  53.67057
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-02      2710
2005-06-03      2711
2005-06-04      2712
2005-06-05      2713
2005-06-06      2714
2005-06-07      2715
2005-06-08      2716
2005-06-09      2717
2005-06-10      2718
2005-06-11      2719
2005-06-12      2720
2005-06-13      2721
2005-06-14      2722
2005-06-15      2723
2005-06-16      2724
2005-06-17      2725
2005-06-18      2726
2005-06-19      2727
2005-06-20      2728
2005-06-21      2729
2005-06-22      2730
2005-06-23      2731
2005-06-24      2732
2005-06-25      2733
2005-06-26      2734
2005-06-27      2735
2005-06-28      2736
2005-06-29      2737
2005-06-30      2738

Slot "endTime":
 [1] "2005-06-02 UTC" "2005-06-03 UTC" "2005-06-04 UTC" "2005-06-05 UTC"
 [5] "2005-06-06 UTC" "2005-06-07 UTC" "2005-06-08 UTC" "2005-06-09 UTC"
 [9] "2005-06-10 UTC" "2005-06-11 UTC" "2005-06-12 UTC" "2005-06-13 UTC"
[13] "2005-06-14 UTC" "2005-06-15 UTC" "2005-06-16 UTC" "2005-06-17 UTC"
[17] "2005-06-18 UTC" "2005-06-19 UTC" "2005-06-20 UTC" "2005-06-21 UTC"
[21] "2005-06-22 UTC" "2005-06-23 UTC" "2005-06-24 UTC" "2005-06-25 UTC"
[25] "2005-06-26 UTC" "2005-06-27 UTC" "2005-06-28 UTC" "2005-06-29 UTC"
[29] "2005-06-30 UTC" "2005-07-01 UTC"

> rrSTF[cbind(4:1,1:4)] # returns 4 spatial and all temporal instances
An object of class "STS"
Slot "index":
     [,1] [,2]
[1,]    1    1
[2,]    2    2
[3,]    3    3
[4,]    4    4

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DEBE056 13.647013  52.44775
DEUB038  9.791584  54.07312
DENI063  9.685030  53.52418
DESH001  9.585911  53.67057
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-02      2710
2005-06-03      2711
2005-06-04      2712

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-03 UTC" "2005-06-04 UTC" "2005-06-05 UTC"

> 
> # STS..
> rrSTSDF[1:2,3:4] # returns 4 values
An object of class "STSDF"
Slot "data":
      PM10
141 20.696
142 21.042
211 17.542
212 14.625

Slot "index":
     [,1] [,2]
[1,]    1    1
[2,]    2    1
[3,]    1    2
[4,]    2    2

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-03      2711
2005-06-04      2712

Slot "endTime":
[1] "2005-06-04 UTC" "2005-06-05 UTC"

> rrSTSDF[cbind(1:2,3:4)] # returns 2 values for c(1,3) and c(2,4)
An object of class "STSDF"
Slot "data":
      PM10
141 20.696
212 14.625

Slot "index":
     [,1] [,2]
[1,]    1    1
[2,]    2    2

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-03      2711
2005-06-04      2712

Slot "endTime":
[1] "2005-06-04 UTC" "2005-06-05 UTC"

> rrSTSDF[cbind(2:1,3:4)] # returns 2 values for c(1,3) and c(2,4)
An object of class "STSDF"
Slot "data":
      PM10
142 21.042
211 17.542

Slot "index":
     [,1] [,2]
[1,]    1    1
[2,]    2    2

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DENI063  9.685030  53.52418
DESH001  9.585911  53.67057
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-03      2711
2005-06-04      2712

Slot "endTime":
[1] "2005-06-04 UTC" "2005-06-05 UTC"

> 
> rrSTS[1:2,3:4] # returns 2 spatial and 2 temporal instances and an index with 4 instances
An object of class "STS"
Slot "index":
     [,1] [,2]
[1,]    1    1
[2,]    2    1
[3,]    1    2
[4,]    2    2

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-03      2711
2005-06-04      2712

Slot "endTime":
[1] "2005-06-04 UTC" "2005-06-05 UTC"

> rrSTS[cbind(1:2,3:4)] # returns 2 spatial and 2 temporal instances, but index with only 2 instances
An object of class "STS"
Slot "index":
     [,1] [,2]
[1,]    1    1
[2,]    2    2

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-03      2711
2005-06-04      2712

Slot "endTime":
[1] "2005-06-04 UTC" "2005-06-05 UTC"

> 
> # STI..
> rrSTIDF[1:2,1:2] # returns two first entries
An object of class "STIDF"
Slot "data":
    PM10
1 16.042
2 15.792

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-02 UTC"

> rrSTIDF[1:2,] # returns two first entries
An object of class "STIDF"
Slot "data":
    PM10
1 16.042
2 15.792

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-02 UTC"

> rrSTIDF[,1:2] # returns two first entries
An object of class "STIDF"
Slot "data":
    PM10
1 16.042
2 15.792

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-02 UTC"

> rrSTIDF[cbind(1:2,1:2)] # returns two first entries
An object of class "STIDF"
Slot "data":
    PM10
1 16.042
2 15.792

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-02 UTC"

> 
> rrSTI[1:2,1:2] # returns two first instances
An object of class "STI"
Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-02 UTC"

> rrSTI[1:2,] # returns two first instances
An object of class "STI"
Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-02 UTC"

> rrSTI[,1:2] # returns two first instances
An object of class "STI"
Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-02 UTC"

> rrSTI[cbind(1:2,1:2)] # returns two first instances
An object of class "STI"
Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-02 UTC"

> 
> # ordered selection
> ###################
> # is respected for STF..
> rrSTFDF[1:2,1:2]@data
    PM10
1 16.042
2 15.792
3 22.500
4 19.333
> rrSTFDF[1:2,2:1]@data
    PM10
1 16.042
2 15.792
3 22.500
4 19.333
> rrSTFDF[2:1,1:2]@data
    PM10
1 15.792
2 16.042
3 19.333
4 22.500
> 
> # and STS
> rrSTSDF[1:2,1:2]@data
     PM10
1  16.042
2  15.792
71 22.500
72 19.333
> rrSTSDF[1:2,2:1]@data
     PM10
1  16.042
2  15.792
71 22.500
72 19.333
> rrSTSDF[2:1,1:2]@data
     PM10
2  15.792
1  16.042
72 19.333
71 22.500
> 
> # and for STI in one time slice
> rrSTIDF[1:2,1:2]@data
    PM10
1 16.042
2 15.792
> # rrSTIDF[2:1,2:1]@data
> 
> # 
> rrSTIDF[c(1,2),c(1,2)]@data
    PM10
1 16.042
2 15.792
> # rrSTIDF[c(2,1),c(1,2)]@data
> rrSTIDF[c(1,200),c(1,200)]@data
      PM10
1   16.042
305  6.458
> # rrSTIDF[c(200,1),c(1,200)]@data
> 
> # STx
> rrSTF[1:2,1:2]@sp
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 
> rrSTF[2:1,1:2]@sp
SpatialPoints:
        coords.x1 coords.x2
DENI063  9.685030  53.52418
DESH001  9.585911  53.67057
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 
> 
> rrSTS[1:2,1:2]
An object of class "STS"
Slot "index":
     [,1] [,2]
[1,]    1    1
[2,]    2    1
[3,]    1    2
[4,]    2    2

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-02      2710

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-03 UTC"

> rrSTS[2:1,1:2]
An object of class "STS"
Slot "index":
     [,1] [,2]
[1,]    1    1
[2,]    2    1
[3,]    1    2
[4,]    2    2

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DENI063  9.685030  53.52418
DESH001  9.585911  53.67057
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-02      2710

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-03 UTC"

> rrSTS[2:1,2:1]
An object of class "STS"
Slot "index":
     [,1] [,2]
[1,]    1    1
[2,]    2    1
[3,]    1    2
[4,]    2    2

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DENI063  9.685030  53.52418
DESH001  9.585911  53.67057
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-02      2710

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-03 UTC"

> 
> rrSTS[1:2,1:2]@sp
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 
> rrSTS[2:1,2:1]@sp
SpatialPoints:
        coords.x1 coords.x2
DENI063  9.685030  53.52418
DESH001  9.585911  53.67057
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 
> 
> # multiple selection
> ####################
> # returns multiple results for STF..
> rrSTF[rep(2,3), 1:2]
An object of class "STF"
Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DENI063   9.68503  53.52418
DENI063   9.68503  53.52418
DENI063   9.68503  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-02      2710

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-03 UTC"

> rrSTFDF[rep(2,3), 1:2]
An object of class "STFDF"
Slot "data":
    PM10
1 15.792
2 15.792
3 15.792
4 19.333
5 19.333
6 19.333

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DENI063   9.68503  53.52418
DENI063   9.68503  53.52418
DENI063   9.68503  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-02      2710

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-03 UTC"

> rrSTF[rep(2,3), rep(2,2)]
An object of class "STF"
Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DENI063   9.68503  53.52418
DENI063   9.68503  53.52418
DENI063   9.68503  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-02      2710
2005-06-02      2710

Slot "endTime":
[1] "2005-06-03 UTC" "2005-06-03 UTC"

> rrSTFDF[rep(2,3), rep(2,2)]
An object of class "STFDF"
Slot "data":
    PM10
1 19.333
2 19.333
3 19.333
4 19.333
5 19.333
6 19.333

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DENI063   9.68503  53.52418
DENI063   9.68503  53.52418
DENI063   9.68503  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-02      2710
2005-06-02      2710

Slot "endTime":
[1] "2005-06-03 UTC" "2005-06-03 UTC"

> 
> # returns multiple results for STS.. 
> rrSTS[rep(2,3),1:2]
An object of class "STS"
Slot "index":
     [,1] [,2]
[1,]    1    1
[2,]    1    1
[3,]    1    1
[4,]    1    2
[5,]    1    2
[6,]    1    2

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DENI063   9.68503  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-02      2710

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-03 UTC"

> rrSTSDF[rep(2,3),1:2]@data
       PM10
2    15.792
2.1  15.792
2.2  15.792
72   19.333
72.1 19.333
72.2 19.333
> rrSTS[rep(2,3), rep(2,2)]
An object of class "STS"
Slot "index":
     [,1] [,2]
[1,]    1    1
[2,]    1    1
[3,]    1    1
[4,]    1    1
[5,]    1    1
[6,]    1    1

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DENI063   9.68503  53.52418
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-02      2710

Slot "endTime":
[1] "2005-06-03 UTC"

> rrSTSDF[rep(2,3), rep(2,2)]@data
       PM10
72   19.333
72.1 19.333
72.2 19.333
72.3 19.333
72.4 19.333
72.5 19.333
> 
> # returns unique results for STI..
> rrSTI[rep(3,3),rep(3,3)]
An object of class "STI"
Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DEUB038  9.791584  54.07312
DEUB038  9.791584  54.07312
DEUB038  9.791584  54.07312
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-01      2709
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-02 UTC" "2005-06-02 UTC"

> rrSTI[cbind(5:1,1:5),]
An object of class "STI"
Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DEUB038  9.791584  54.07312
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC"

> 
> rrSTIDF[rep(3,3),rep(3,3)]
An object of class "STIDF"
Slot "data":
      PM10
3   17.292
3.1 17.292
3.2 17.292

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DEUB038  9.791584  54.07312
DEUB038  9.791584  54.07312
DEUB038  9.791584  54.07312
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-01      2709
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-02 UTC" "2005-06-02 UTC"

> rrSTIDF[cbind(5:1,1:5),]
An object of class "STIDF"
Slot "data":
    PM10
3 17.292

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DEUB038  9.791584  54.07312
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC"

> rrSTIDF[cbind(1:5,1:5),]
An object of class "STIDF"
Slot "data":
    PM10
1 16.042
2 15.792
3 17.292
4 15.750
6 12.375

Slot "sp":
SpatialPoints:
        coords.x1 coords.x2
DESH001  9.585911  53.67057
DENI063  9.685030  53.52418
DEUB038  9.791584  54.07312
DEBE056 13.647013  52.44775
DEBE032 13.225856  52.47309
Coordinate Reference System (CRS) arguments: +proj=longlat +datum=WGS84
+no_defs 

Slot "time":
           timeIndex
2005-06-01      2709
2005-06-01      2709
2005-06-01      2709
2005-06-01      2709
2005-06-01      2709

Slot "endTime":
[1] "2005-06-02 UTC" "2005-06-02 UTC" "2005-06-02 UTC" "2005-06-02 UTC"
[5] "2005-06-02 UTC"

> 
> proc.time()
   user  system elapsed 
  1.052   0.050   1.092 
