Data Checking
d <- data.frame( a = 1:3, b = 2:4, c=c(3,5,9) ) # last row wrong subset(d, a+b!=c )
On 24 Mar 2002 at 22:41, Ko-Kang Kevin Wang wrote:
Hi, This is a simple question with if elseif....however I am having trouble constructing the solution for some reason. Suppose I have a data set with 3 variables, a, b and c say. Let's say c is the sum of a and b. So: a b c 1 2 3 2 3 5 3 4 7 . . . . . . . . . Suppose that I know there have been some data entry errors and I want to check if ALL values in c is really the sum of a and b, and if not, print out the whole line (i.e. all values of a, b and c in that row). Any help on how I can write this if elseif block will be apprecaited! Ko-Kang ------------------------------------------------------------------------------ Ko-Kang Kevin Wang Postgraduate PGDipSci Student Department of Statistics University of Auckland New Zealand -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
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