How to grep a specific integer in R? -

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how grep specific integer in r ? thought parameter fixed=true allowed apparently not case:

namedatatable = "long_te_b.xpt" ndie = 1 datatable = read.xport(namedatatable) pos_datatable_die = grep(as.character(ndie), datatable[,"dieindex"], fixed=true) datatabledie = datatable[pos_datatable_die,]

that takes lines dieindex equal 11. problem me : 

> datatabledie[947, "dieindex"]

[1] 1

> datatabledie[949, "dieindex"]

[1] 11

how settle it, please ? thank in advance.

william

we can paste ^ , $ more specific. or use word boundary (\\b)

grep(paste0("^",ndie, "$"), datatable[,"dieindex"])

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