[R] Error in rowSums

[TGS]

Yes, please do as Erik said in the future but here's one way to do it.

(A <- matrix(data = rnorm(n = 9, mean = 0, sd = 1), nrow = 3, ncol = 3, byrow = FALSE, dimnames = NULL))
matrix(rowSums(A))

On Aug 12, 2010, at 11:28 AM, 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?

Thanks in Advance
Amit





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