i have list of geolocation sequences. each element of list of form :
> "[[1.2,2.2],[-1.12,3.45],[12.311,-1.34],[-12.32,33.333]]" i able length of sequence (4 in example above). please me? i've tried use regular expressions couldn't succeed.
thank in advance!
as few folks suggested in comments, can count # of times specific character appears in sequences. assumes data formed , consistent. example:
library(stringr) x <- "[[1.2,2.2],[-1.12,3.45],[12.311,-1.34],[-12.32,33.333]]" str_count(x, "\\[") - 1 #subtract 1 since there 2 opening [ yields:
> str_count(x, "\\[") - 1 [1] 4 