[R] Fw: Error in rowSums REPOST

[Nikhil Kaza]

?as.numeric


On Aug 13, 2010, at 7:50 AM, Amit Patel wrote:

> For the query below I have also included the follwing information.  
> Thanks for
> your replies
>
>> str(FeaturePresenceMatrix)
> chr [1:65530, 1:40] "0" "0" "0" "0" "1" "0" "0" "0" "0" ...
> - attr(*, "dimnames")=List of 2
>  ..$ : chr [1:65530] "4" "5" "6" "7" ...
>  ..$ : chr [1:40] "X1" "X2" "X3" "X4" ...
>> ?class
>> class(FeaturePresenceMatrix)
> [1] "matrix"
>
> Amit Patel wrote:
>
>> Hi
>> I am trying to calculate the row sums of a matrix i have created
>> The matrix ( FeaturePresenceMatrix) has been created by
>>
>> 1) Read csv
>> 2) Removing unnecesarry data using [-1:4,] command
>> 3) replacing all the NA values with as.numeric(0) and all others with
>> as.numeric (1)
>>
>> When I carry out the command
>>
>> TotalFeature <- rowrowSums(FeaturePresenceMatrix, na.rm = TRUE)
>>
>> I get the following error.
>> Error in rowSums(FeaturePresenceMatrix, na.rm = TRUE) :   'x' must  
>> be numeric
>>
>> Any tips onhow I can get round this?
>
> Yes, follow the posting guide and give the list a reproducible
> example. We don't know a critical piece of information,
> the class of your data. We know it's *not* numeric though,
> which is what it needs to be.  Use ?class, ?str, and
> possibly give us a small sample with ?dput. That way, we can
> reproduce the error.
>
>
>
>
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.