[R] Help "deleting negative values in a matrix, and do statistic analysis"

[Rui Barradas]

Hello,


york8866 wrote
> 
> Hi, John,
> 
> the code ran well.
> 
> however, somehow, the means were not calculated correctly using the
> following code.
> 
> test <- read.csv("Rtestdataset.csv", as.is=T,header=T)  
> test <- data.frame(test)
> test
> rowMeans(test)
> apply(test,1,function(y)mean(y>=0))
> 
> Is there anything wrong?
> thanks,
> 

Yes!!!

It's mean( y[y >= 0] )

Rui Barradas


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