Message-ID: <200401311643.16719.ozric@web.de>
Date: 2004-01-31T15:43:16Z
From: Christian Schulz
Subject: in which column is an entry?
Hi,
df is a data.frame with 43 colums and 29877 rows with lot of NA.
I want the column number for all respondendts in one column
where is the first entry >=0 as columnnumber.
my first step:
time <- function(df)
+ { for (i in 1:length(df [,1])) {
+ which(df[i,1]:df[i,43] >= 0)
+ }
+ }
>
> t1 <- time(YS)
Error in df[i, 1]:df[i, 43] : NA/NaN argument
Many thanks for help , regards christian