[R] count occurrence and distance of characters in string
mane.desk at googlemail.com
Fri Nov 5 00:53:49 CET 2010
thanks for the answer, actually I already typed an example
but deleted it since I thought it's superfluous.
string <- "kjokllokkoadddo"
# f1(string, "o") should return that "o" was found 4 times
# f2(string, "o") should return that the distances between the "o"'s
found is 3 , 2, 4
On 11/05/2010 12:28 AM, Charles C. Berry wrote:
> On Thu, 4 Nov 2010, Immanuel wrote:
>> Hello all,
>> I want to know how often one character occurs in a given string
>> and the distance from between every two occurences. (distance = other
>> characters between them).
> You should provide "commented, minimal, self-contained, reproducible
> code" as asked.
> And especially for a question like this one with many simple answers
> that RespondeRs will shower you with if only you give them a starting
> Use tapply, strsplit, seq, nchar, unlist, diff, "-", and table for one
>> R-help at r-project.org mailing list
>> PLEASE do read the posting guide
>> and provide commented, minimal, self-contained, reproducible code.
> Charles C. Berry Dept of Family/Preventive
> cberry at tajo.ucsd.edu UC San Diego
> http://famprevmed.ucsd.edu/faculty/cberry/ La Jolla, San Diego
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