[R] missing values

Ott Toomet siim at obs.ee
Thu Jun 27 10:39:56 CEST 2002

On Thu, 27 Jun 2002, Ulrich Leopold wrote:

  |Dear list,
  |how can I exclude the missing values in the following example:
  |tapply(lsk0t50$Pox2, lsk0t50$ProfN, sum)

You should try

tapply(......, na.rm=TRUE)

look ?sum and ?tapply


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