I have a dataset consiting of 40 rows (ResInd_1 - ResInd_40) each with a combination of one or more of the numbers 1-19. Example ssid ResInd_1 ResInd_2 ResInd_3 ResInd_4 ... 1 1 1,4 4,8,10,11 2,19 2 2,3 1,5 2,6 1 ... I'd like to count the number of times each number occurs in total Example obs occuring 1 4 2 3 3 1 ...
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