Startsituation:
structure(c(1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1,
0, 1, 1), .Dim = 4:5, .Dimnames = structure(list(subject = c("s1",
"s2", "s3", "s4"), class = c("c1", "c2", "c3", "c4", "c5")), .Names =
c("subject",
"class")), class = c("xtabs", "table"), call = xtabs(formula = ~subject +
class, data = ia))
I want a count of subjects that match the same classes in subject_cnt and a
count of the number of classes in class_cnt The result of this example
should be:
structure(list(subject_cnt = c(2L, 1L, 1L), class_cnt = c(3L,
2L, 3L), c1 = c(1L, 1L, 0L), c2 = c(0L, 1L, 0L), c3 = c(1L, 0L,
1L), c4 = c(0L, 0L, 1L), c5 = c(1L, 0L, 1L)), .Names = c("subject_cnt",
"class_cnt", "c1", "c2", "c3", "c4", "c5"), class = "data.frame", row.names
= c(NA,
-3L))
How can I achieve this in R, without complicated loops?
PS. Note that the number of classes and subjects are in real quite big.
Cheers,
Lars
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