how to create sequence of numbers in same digit with a character in R

Question

I'd like to make a sequence of numbers with a character in R as below.

[H01, H02, H03, ... , H24]

I can only generate numbering characters like

[H1, H2, H3, ... , H24]

with a command

paste0("H", 1:24)

any tips for this?

Check out `?sprintf`, e.g. `sprintf("%02dH", 1:24)`? – lukeA Jan 04 '16 at 08:37 — lukeA, Jan 04 '16 at 08:37

score 2 · Accepted Answer · edited May 23 '17 at 12:23

2

sprintf is similar with printf of C, so you can control the format exactly as below:

sprintf("H%02d", 1:24)
[1] "H01" "H02" "H03" "H04" "H05" "H06" "H07" "H08" "H09" "H10" "H11" "H12" "H13" "H14" "H15" "H16" "H17" "H18" "H19" "H20" "H21"
[22] "H22" "H23" "H24"

Also see this.

edited May 23 '17 at 12:23

Community

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answered Jan 04 '16 at 08:39

Patric

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Just to nitpick, I'd say that the R `sprintf` is more similar to the C `sprintf`, since it creates an object instead of writing on a file/connection (unless you `print` the result of course). – nicola Jan 04 '16 at 09:34
@nicola agree, C' buffer .vs. R' object :) – Patric Jan 04 '16 at 09:37

how to create sequence of numbers in same digit with a character in R

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