array-subset.Rout.save 4.92 KB
Newer Older
Radford Neal's avatar
Radford Neal committed
1

2 3 4
pqR version 2.15.1 (2018-00-00), based on R 2.15.0 (2012-03-30)

R 2.15.0 is Copyright (C) 2012 The R Foundation for Statistical Computing
Radford Neal's avatar
Radford Neal committed
5
ISBN 3-900051-07-0
6 7 8 9 10

Modifications to R in pqR are Copyright (C) 2013-2018 Radford M. Neal

Some modules are from R-2.15.1 or later versions distributed by the R Core Team

Radford Neal's avatar
Radford Neal committed
11
Platform: x86_64-unknown-linux-gnu (64-bit)
Radford Neal's avatar
Radford Neal committed
12 13 14 15 16 17 18 19 20 21 22 23 24

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

25 26 27

No helper threads, task merging enabled, uncompressed pointers.

Radford Neal's avatar
Radford Neal committed
28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114
> ## array subsetting tests
> ##
> ## Tests should be written to raise an error on test failure
> ##
> 
> ## Test for subsetting of an array using a matrix with ncol == length(dim(x))
> 
> ## first matrix case
> m <- matrix(1:25, ncol=5, dimnames = list(letters[1:5], LETTERS[1:5]))
> 
> si <- matrix(c(1, 1, 2, 3, 3, 4), ncol = 2, byrow = TRUE)
> ss <- matrix(c("a", "A", "b", "C", "c", "D"), ncol = 2, byrow = TRUE)
> 
> stopifnot(identical(m[si], m[ss]))
> stopifnot(identical(c(1L, 12L, 18L), m[ss]))
> 
> ## test behavior of NA entries in subset matrix.
> ## NA in character matrix should propagate and should not
> ## match an NA in a dimname.
> 
> ## An NA in either column propagates to result
> ssna <- ss; ssna[2, 2] <- NA
> stopifnot(identical(c(1L, NA, 18L), m[ssna]))
> ssna <- ss; ssna[2, 1] <- NA
> stopifnot(identical(c(1L, NA, 18L), m[ssna]))
> 
> ## An NA in row/column names is not matched
> mnadim <- m
> tmp <- rownames(mnadim)
> tmp[5] <- NA
> rownames(mnadim) <- tmp
> stopifnot(identical(c(1L, NA, 18L), m[ssna]))
> 
> ## Unmatched subscripts raise an error
> ssnm <- ss
> ssnm[2, 2] <- "NOMATCH"
> stopifnot(inherits(try(m[ssnm], silent=TRUE), "try-error"))
> 
> ## "" does not match and so raises an error
> mnadim <- m
> tmp <- rownames(mnadim)
> tmp[5] <- ""
> rownames(mnadim) <- tmp
> ssnm <- ss
> ssnm[2, 2] <- ""
> stopifnot(inherits(try(mnadim[ssnm], silent=TRUE), "try-error"))
> 
> 
> ## test assignment
> m3 <- m2 <- m
> m2[si] <- c(100L, 200L, 300L)
> m3[ss] <- c(100L, 200L, 300L)
> stopifnot(identical(m2, m3))
> 
> ## now an array case
> a <- array(1:75, dim = c(5, 5, 3),
+            dimnames = list(letters[1:5], LETTERS[1:5], letters[24:26]))
> 
> si <- matrix(c(1, 1, 1,
+                2, 3, 1,
+                3, 4, 1,
+                5, 1, 3),
+              ncol = 3, byrow = TRUE)
> 
> ss <- matrix(c("a", "A", "x",
+                "b", "C", "x",
+                "c", "D", "x",
+                "e", "A", "z"),
+              ncol = 3, byrow = TRUE)
> 
> stopifnot(identical(a[si], a[ss]))
> stopifnot(identical(c(1L, 12L, 18L, 55L), a[ss]))
> 
> a2 <- a1 <- a
> a1[si] <- c(100L, 1200L, 1800L, 5500L)
> a2[ss] <- c(100L, 1200L, 1800L, 5500L)
> stopifnot(identical(a1, a2))
> 
> ## it is an error to subset if some dimnames are missing NOTE: this
> ## gives a subscript out of bounds error, might want something more
> ## informative?
> a3 <- a
> dn <- dimnames(a3)
> dn[2] <- list(NULL)
> dimnames(a3) <- dn
> stopifnot(inherits(try(a3[ss], silent=TRUE), "try-error"))
> 
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174
> 
> # preservation of names.
> 
> a <- 1:24
> names(a) <- letters[1:24]
> 
> stopifnot(identical(a[],a))
> stopifnot(identical(a[3],c(c=3L)))
> 
> a <- matrix(1:24,6,4)
> dimnames(a) <- list(LETTERS[11:16],letters[1:4])
> 
> s <- a[2:3,2:3]
> r <- matrix(c(8L,9L,14L,15L),2,2)
> dimnames(r) <- list(c("L","M"),c("b","c"))
> stopifnot(identical(s,r))
> 
> s <- a[2:3,]
> r <- matrix(c(2L,3L,8L,9L,14L,15L,20L,21L),2,4)
> dimnames(r) <- list(c("L","M"),c("a","b","c","d"))
> stopifnot(identical(s,r))
> 
> a <- array(1:24,c(2,3,4))
> dimnames(a) <- list(LETTERS[1:2],letters[11:13],LETTERS[11:14])
> 
> s <- a[2,2:3,3:4]
> r <- matrix(c(16L,18L,22L,24L),2,2)
> dimnames(r) <- list(c("l","m"),c("M","N"))
> stopifnot(identical(s,r))
> 
> s <- a[2,2,]
> stopifnot(identical(s,c(K=4L,L=10L,M=16L,N=22L)))
> 
> a <- matrix(11:13,1,3)
> dimnames(a) <- list("X",letters[1:3])
> 
> stopifnot(identical(a[1,2],12L))
> stopifnot(identical(a[1,2:2],12L))
> stopifnot(identical(a[1,2..2],c(b=12L)))
> stopifnot(identical(a[1:1,2],12L))
> stopifnot(identical(a[1..1,2],c(X=12L)))
> 
> stopifnot(identical(a[1,],c(a=11L,b=12L,c=13L)))
> 
> a <- array(11:13,c(1,3,1))
> dimnames(a) <- list("X",letters[1:3],"Y")
> 
> stopifnot(identical(a[1,2,1],12L))
> stopifnot(identical(a[1,2:2,1],12L))
> stopifnot(identical(a[1,2..2,1],c(b=12L)))
> stopifnot(identical(a[1:1,2,1],12L))
> stopifnot(identical(a[1..1,2,1],c(X=12L)))
> 
> stopifnot(identical(a[1,,1],c(a=11L,b=12L,c=13L)))
> 
> a <- provideDimnames(array(5,c(2,5,2,5)))
> s <- a[1:2,1:2,1:2,1:2]
> r <- provideDimnames(array(5,c(2,2,2,2)))
> stopifnot(identical(s,r))
>