Hi, I can't for the life of me find how to do this in base R, but I'd be
surprised if it's not possible.

I'm just trying to replace multiple columns at once in a data frame.

#load example data
data(api)

#this displays the three columns and eight rows i'd like to replace
apiclus1[ apiclus1$meals > 98 , c( "pcttest" , "api00" , "sch.wide" ) ]


#the goal is to replace pcttest with 100, api100 with NA, and sch.wide with
"Maybe"

#this doesn't work--
apiclus1[ apiclus1$meals > 98 , c( "pcttest" , "api00" , "sch.wide" ) ] <-
c( 100 , NA , "Maybe" )

#the results replace downward instead of across
apiclus1[ apiclus1$meals > 98 , c( "pcttest" , "api00" , "sch.wide" ) ]

I know I can do this with a few more steps (like one variable at a time or
by counting the number of rows to replace and then using rep() ..but I'm
hoping there's a quicker way?


Thanks!!

Anthony Damico
Kaiser Family Foundation
using R 2.13.0 in Windows x64

	[[alternative HTML version deleted]]

