[R] counting values in multiple columns

From: Yosub Jung <yosubjung_at_berkeley.edu>
Date: Tue, 19 Apr 2011 20:05:26 -0700


I have a table that has 2000 rows and 8 columns. The headings of columns are: yearjel.code.1jel.code.2jel.code.3jel.code.4jel.code.5jel.code.6 jel.code.7.
Under each column, there are either numbers or blank spaces corresponding to the given year.
For instance, my 10th row is:1019838242824382609170 I want to count how many times each code appears in total and how many times it appears in each year.
I don't think I can use table function. What can I do?

Yosub Jung.

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