search for: uniqcat

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2008 Aug 02
3
convert for loop into apply()
Hi all,I know this topic has came up multiple times, but I've never fully understand the apply() function. Anyway, I'm here asking for your help again to convert this loop to apply(). I have 2 data frames with the following information: a1 is the fragment that is need to be covered, a2 is the probes that cover the specific fragment. I need to count the number of probes cover every given