Created
July 9, 2013 09:30
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Count Frequencies of a column in a tsv file
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| (def column-n (fn [n sep] (fn [record] (let [s (str record) arr (clojure.string/split s sep)] (arr n))))) | |
| (defn file-freq [file column sep] | |
| (with-open [ rdr (clojure.java.io/reader file) ] | |
| (-> (column-n column sep) (map (line-seq rdr)) frequencies) | |
| ) | |
| ) | |
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Interestingly.. i just learnt how to do the same thing using one line cmd in linux today.
cut -d'|' -f | sort | uniq -c