count number of digits in a string in r

Question

I have a column with strings:

name
aldrinas63_rios200_2001
sa_c.fr.1234

I want to count the number of digits in each cell: I have used the

Answer 1

We can remove the elements that are not digits and count

nchar(gsub("[^0-9]+", "", data$name))
#[1] 9 4

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or if we are using str_count, remove the + as + checks for patterns of one or more digits and count 63 as first instance, 200 as second, and 2001 as third (for the first element of 'name')

library(stringr)
str_count(data$name, "[0-9]")
#[1] 9 4

data

data <- structure(list(name = c("aldrinas63_rios200_2001", "sa_c.fr.1234"
 )), class = "data.frame", row.names = c(NA, -2L))