[R] Fw: Error in rowSums REPOST

[Amit Patel]

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.