you could try something along these lines:
DF <- data.frame(V1 = c(0, 0.9, " ", 0.8, 0.1, 0),
V2 = c(0.9, " ", 0.8, 0.7, " ", 1))
DF
sapply(DF, function (x)
as.numeric(gsub("(^ +)|( +$)", "0", x)))
I hope it helps.
Best,
Dimitris
On 4/19/2011 11:39 AM, Simone Gabbriellini wrote:
Hello List,
I have a data frame like:
V130 V131 V132 V133 V134 V135 V136
1 0 0 0.9 0 0.9
0 0
2 0 0 0 0
0 0.8
3 0 0 0 0 0.9
0 0
4 0.9 0 0 0 0
0 0.9
5 0 0 0
6 0 0 0 0.9 0
0 0.9
7 0 0 0.8 0 0
0 0
8 0.9 0 0 0.9
0.8 0
9 0 0 0 0.9 0.9
0 0
10 0 0 0 0 0
0 0.9
I would like to fill the empty cells with a 0... how to address those empty
cells?
thanks for your help!
best,
Simone
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--
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center
Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
Fax: +31/(0)10/7043014
Web: http://www.erasmusmc.nl/biostatistiek/
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
