Hi everyone,
A simple question, but i cannot figure this out.
I have a data-frame with 4 columns (onset, offset, outcome, mean):
onset offset outcome mean8 72071 72503 1 7244615 142598 143030
1 NaN30 293729 294161 1 294080
For each 'NaN' in the mean column, i want to replace that NaN with the 'offset'
value in the same row.
Intended outcome:
onset offset outcome mean8 72071 72503 1 7244615 142598 143030
1 14303030 293729 294161 1 294080
I have tried:
df$mean <- replace(df$mean, is.na(df$mean), df$offset)
but i get the error message: 'number of items to replace is not a multiple of
replacement length'. I'm assuming because this is trying to insert the whole
'offset' column into my one NaN cell. Is this a correct interpretation of the
error message?
Can anyone tell me how to replace any mean row NaN's with the offset value
from that very same row?
I don't want to use any pasting etc as this needs to be used as part of a
function working over a large dataset than the one shown here.
Cheers
Jonathan
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