thank you guys. All the columns of my data are numeric.
I tried both methods, and they both work.
I appreciate your help.
-k
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What is the structure of the data that you are reading in? Are you using
'read.table', 'scan', etc.? Are all the columns numeric, or do you just
want to change some of them? If you have used 'na.strings' to cause the
values of the missing data to be set to NA, then you can iterate through the
ap
On 12-Jan-10 17:46:47, karena wrote:
> hi, I have a question about importing data in R.
>
> I want to import a file which has missing value in it, and the missing
> values are denoted as ".", I want to first read in the file, and then
> change the "." into the number zero "0".
>
> how can I do th
Hi, tim,
thank you very much for the reply, but I am really a new user. How to change
all NAs to zero?
thanks again.
karena
jholtman wrote:
>
> ?read.table
>
> na.strings='.'
>
> Then change all NAs to zero df$col[is.na(df$col)] <- 0
>
> On Tue, Jan 12, 2010 at 12:46 PM, karena wrote
?read.table
na.strings='.'
Then change all NAs to zero df$col[is.na(df$col)] <- 0
On Tue, Jan 12, 2010 at 12:46 PM, karena wrote:
>
> hi, I have a question about importing data in R.
>
> I want to import a file which has missing value in it, and the missing
> values are denoted as ".", I w
hi, I have a question about importing data in R.
I want to import a file which has missing value in it, and the missing
values are denoted as ".", I want to first read in the file, and then change
the "." into the number zero "0".
how can I do that?
thank you,
karena
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