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[matrix] Annotation of /pkg/tests/indexing.R
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Annotation of /pkg/tests/indexing.R

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1 : maechler 687 #### For both 'Extract' ("[") and 'Replace' ("[<-") Method testing
2 :    
3 :     library(Matrix)
4 :    
5 : maechler 907 source(system.file("test-tools.R", package = "Matrix"))# identical3() etc
6 : maechler 687
7 : maechler 873 ### Dense Matrices
8 :    
9 : maechler 687 m <- Matrix(1:28, nrow = 7)
10 : maechler 873 validObject(m) ; m@x <- as.double(m@x) ; validObject(m)
11 :     stopifnot(identical(m, m[]),
12 :     identical(m[2, 3], 16), # simple number
13 :     identical(m[2, 3:4], c(16,23))) # simple numeric of length 2
14 : maechler 687
15 : maechler 873 m[2, 3:4, drop=FALSE] # sub matrix of class 'dgeMatrix'
16 :     m[-(4:7), 3:4] # dito; the upper right corner of 'm'
17 : maechler 687
18 : maechler 873 ## rows or columns only:
19 :     m[1,] # first row, as simple numeric vector
20 :     m[,2] # 2nd column
21 :     m[,1:2] # sub matrix of first two columns
22 :     m[-(1:6),, drop=FALSE] # not the first 6 rows, i.e. only the 7th
23 : maechler 687
24 : maechler 873 ## logical indexing
25 :     stopifnot(identical(m[2,3], m[(1:nrow(m)) == 2, (1:ncol(m)) == 3]),
26 :     identical(m[2,], m[(1:nrow(m)) == 2, ]),
27 :     identical(m[,3:4], m[, (1:4) >= 3]))
28 :    
29 : maechler 886 ## dimnames indexing:
30 :     mn <- m
31 :     dimnames(mn) <- list(paste("r",letters[1:nrow(mn)],sep=""),
32 :     LETTERS[1:ncol(mn)])
33 :     mn["rd", "D"]
34 : maechler 1226 stopifnot(identical(mn["rc", "D"], mn[3,4]), mn[3,4] == 24,
35 :     identical(mn[, "A"], mn[,1]), mn[,1] == 1:7,
36 : maechler 886 identical(mn[c("re", "rb"), "B"], mn[c(5,2), 2])
37 :     )
38 : maechler 873
39 : maechler 886 mo <- m
40 :     m[2,3] <- 100
41 :     m[1:2, 4] <- 200
42 :     m[, 1] <- -1
43 :     m[1:3,]
44 :    
45 : maechler 1226 g10 <- m [ m > 10 ]
46 :     stopifnot(18 == length(g10))
47 :     if(paste(R.version$major, R.version$minor, sep=".") >= "2.3")
48 :     ## Buglet in R(<= 2.2.1)'s possibleExtends()
49 :     stopifnot(10 == length(m[ m <= 10 ]))
50 : maechler 873
51 :    
52 : maechler 1226 ### Sparse Matrices --------------------------------------
53 : maechler 687
54 :     m <- 1:800
55 :     set.seed(101) ; m[sample(800, 600)] <- 0
56 :     m <- Matrix(m, nrow = 40)
57 :     mm <- as(m, "matrix")
58 :     dimnames(mm) <- NULL ## << workaround: as(<sparse>, "matrix") has NULL dimnames
59 :     str(mC <- as(m, "dgCMatrix"))
60 :     str(mT <- as(m, "dgTMatrix"))
61 :     stopifnot(identical(mT, as(mC, "dgTMatrix")),
62 :     identical(mC, as(mT, "dgCMatrix")))
63 :    
64 :     mC[,1]
65 :     mC[1:2,]
66 : maechler 925 mC[7, drop = FALSE]
67 : maechler 1226 assert.EQ.mat(mC[1:2,], mm[1:2,])
68 :     stopifnot(all.equal(mC[,3], mm[,3]))
69 :     assert.EQ.mat(mC[7, , drop=FALSE], mm[7, , drop=FALSE])
70 :    
71 : maechler 925 stopifnot(identical(mC[7, drop = FALSE],
72 :     mC[7,, drop = FALSE]))
73 : maechler 1269 validObject(print(mT[,c(2,4)]))
74 :     stopifnot(all.equal(mT[2,], mm[2,]),
75 :     ## row or column indexing in combination with t() :
76 :     identical(mT[2,], t(mT)[,2]),
77 :     identical(mT[-2,], t(t(mT)[,-2])),
78 :     identical(mT[c(2,5),], t(t(mT)[,c(2,5)]))
79 :     )
80 : maechler 1226 assert.EQ.mat(mT[4,, drop = FALSE], mm[4,, drop = FALSE])
81 : maechler 687 stopifnot(identical3(mm[,1], mC[,1], mT[,1]),
82 :     identical3(mm[3,], mC[3,], mT[3,]),
83 :     identical3(mT[2,3], mC[2,3], 0),
84 :     identical(mT[], mT),
85 : maechler 925 ## TODO: identical4() with m[c(3,7), 2:4] - fail because of 'dimnames'
86 : maechler 687 identical3(as(mC[c(3,7), 2:4],"matrix"), mm[c(3,7), 2:4],
87 :     as(mT[c(3,7), 2:4],"matrix")))
88 :    
89 : maechler 925 ## --- negative indices ----------
90 :     mc <- mC[1:5, 1:7]
91 :     mt <- mT[1:5, 1:7]
92 :     ## sub matrix
93 : maechler 1226 assert.EQ.mat(mC[1:2, 0:3], mm[1:2, 0:3]) # test 0-index
94 : maechler 925 stopifnot(identical(mc[-(3:5), 0:2], mC[1:2, 0:2]),
95 : maechler 1226 identical(mt[-(3:5), 0:2], mT[1:2, 0:2]),
96 :     identical(mC[2:3, 4], mm[2:3, 4]))
97 :     assert.EQ.mat(mC[1:2,], mm[1:2,])
98 : maechler 925 ## sub vector
99 :     stopifnot(identical4(mc[-(1:4), ], mC[5, 1:7],
100 :     mt[-(1:4), ], mT[5, 1:7]))
101 :     stopifnot(identical4(mc[-(1:4), -(2:4)], mC[5, c(1,5:7)],
102 :     mt[-(1:4), -(2:4)], mT[5, c(1,5:7)]))
103 :    
104 :     ## mixing of negative and positive must give error
105 :     assertError(mT[-1:1,])
106 :    
107 : maechler 1226 ## Sub *Assignment* ---- now works (partially):
108 :     mt0 <- mt
109 :     mt[1, 4] <- -99
110 :     mt[2:3, 1:6] <- 0
111 :     mt
112 :     m2 <- mt+mt
113 :     m2[1,4] <- -200
114 :     m2[c(1,3), c(5:6,2)] <- 1:6
115 :     stopifnot(m2[1,4] == -200,
116 :     as.vector(m2[c(1,3), c(5:6,2)]) == 1:6)
117 :     mt[,3] <- 30
118 :     mt[2:3,] <- 250
119 :     mt[1:5 %% 2 == 1, 3] <- 0
120 :     mt[3:1, 1:7 > 5] <- 0
121 :     mt
122 : maechler 1215
123 : maechler 1226 tt <- as(mt,"matrix")
124 :     ii <- c(0,2,5)
125 :     jj <- c(2:3,5)
126 :     tt[ii, jj] <- 1:6 # 0 is just "dropped"
127 :     mt[ii, jj] <- 1:6
128 :     assert.EQ.mat(mt, tt)
129 : maechler 1215
130 : maechler 1226 mt[1:5, 2:6]
131 :     as((mt0 - mt)[1:5,], "dsparseMatrix")# [1,5] and lines 2:3
132 :    
133 : maechler 1315 mt[c(2,4), ] <- 0; stopifnot(as(mt[c(2,4), ],"matrix") == 0)
134 : maechler 1226 mt[2:3, 4:7] <- 33
135 :     validObject(mt)
136 :     mt
137 :    
138 : maechler 1315 mc[1,4] <- -99 ; stopifnot(mc[1,4] == -99)
139 :     mc[1,4] <- 00 ; stopifnot(mc[1,4] == 00)
140 :     mc[1,4] <- -99 ; stopifnot(mc[1,4] == -99)
141 :     mc[1:2,4:3] <- 4:1; stopifnot(as.matrix(mc[1:2,4:3]) == 4:1)
142 :    
143 :     ## Debugging: R bug -- debug(Matrix:::replCmat) has no effect
144 :    
145 : maechler 1226 mc[-1, 3] <- -2:1 # 0 should not be entered; 'value' recycled
146 :     mt[-1, 3] <- -2:1
147 : maechler 1315 stopifnot(mc@x != 0, mt@x != 0,
148 :     mc[-1,3] == -2:1, mt[-1,3] == -2:1) ##--> BUG -- fixed
149 :     ## source("~/R/Pkgs/Matrix/R/Tsparse.R")
150 :     ## Matrix_expand_pointers <- Matrix:::Matrix_expand_pointers
151 :     ## -> open ../R/dgCMatrix.R --> replCmat .. now eval-line by line ..
152 :    
153 :     ev <- 1:5 %% 2 == 0
154 :     mc[ev, 3] <- 0:1
155 :     ##FIXME stopifnot(mc[ev, 3] == 0:1) ##-> BUG {very peculiar; the 2nd time it works ...}
156 : maechler 1226 validObject(mc)
157 : maechler 1315 mc # now shows a non-structural zeros
158 : maechler 1226 mc[ii, jj] <- 1:6
159 :     mc[c(2,5), c(3,5)] <- 3.2
160 :     validObject(mc)
161 : maechler 1315 (m. <- mc)
162 :     ## FIXME: mc[4,] <- 0 # -> error -- another Bug
163 : maechler 1226
164 :     cat('Time elapsed: ', proc.time(),'\n') # for ``statistical reasons''

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