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Select rows of a matrix that meet a condition
...operation on a matrix, you can define a column by name:
m[m[, "three"] == 11,]
Or by number:
m[m[,3] == 11,]
Note that if only one row matches, the result is an integer vector, not a matrix.
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edited Aug 16 '11 at 12:22
answered Aug 16 '11 at 12:16
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