[R] Error in rowSums

[Erik Iverson]

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.