So i have a simple function:
bmass=function(y){
weight=y$WT*y$MSTR
return(bio)
}
And want to apply to a whole bunch of rows in my data.frame:
final1=apply(final,1,yldbu)
BUT...recieve the following error:
"Error in y$WT : $ operator is invalid for atomic vectors"
However when i try:
> final[1,]$WT*final[1,]$MSTR
[1] 156.3
It gives me the correct answer....what is apply not liking in my code?
Thanks
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