how to split the column in R? -

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i want split same column in same way . wanted following bur not working propely.

the code used t38kbat = read.table("test38kbat.txt", header = false) head(t38kbat)

t38kbat <- separate (t38kbat, v2, c("sp", "id", "gene_organism"), \\"|") t38kbat <- separate (t38kbat, gene_organism, c("gene", "organism"), \\"_") t38kbat <- unite (t38kbat, sp, sp, id, sep = "|")

while run script recieved error

error: unexpected input in "t38kbat <- separate (t38kbat, v2, c("sp", "id", "gene_organism"), \"

can guide me how resolve it.

in base r, strsplit command operate on vector of form, produces list, have simplify further.

in tidyr package, there's separate function preserve data frame nature of things. that's preferable use case.

for example

> library(tidyr) > <- data.frame(x=1:3, y=c("a|b|c", "b|c|d", "d|e|f")) >   x     y 1 1 a|b|c 2 2 b|c|d 3 3 d|e|f > separate(a, y, c("a","b","c"), '\\|')   x b c 1 1 b c 2 2 b c d 3 3 d e f

to flesh out strsplit solution slightly, have use awkward combination of cbinds there

> cbind(a, do.call(cbind, strsplit(as.character(a$y), "\\|")))   x     y 1 2 3 1 1 a|b|c b d 2 2 b|c|d b c e 3 3 d|e|f c d f

edit: should note if use tidyr approach, have use recursively, possibly unite, complete behavior. like

df <- separate(df, col, c("type", "subtype", "rawclass"), "\\|") df <- separate(df, rawclass, c("class", "subclass"), "_") df <- unite(df, sp, type, subtype, sep="|")

assuming original column called col, , made-up names final headers.


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