Displaying 1 result from an estimated 1 matches for "changefromopen".
2008 Dec 14
1
how to convert factors to numbers
...tach(spy)
> names(spy)<-c("QDate","OpenP","HighP","LowP","CloseP","Vol","AdjP")
> spy[1,]
QDate OpenP HighP LowP CloseP Vol AdjP
1 12/14/2006, 141.86, 143.24, 141.84, 143.12, 64755200, 138.34
> ChangeFromOpen<-spy[1,5]-spy[1,2]
Warning message:
In Ops.factor(spy[1, 5], spy[1, 2]) : - not meaningful for factors
>
As you can see, I cannot calculate the difference between the closing price
and the opening price, (much less compute averages, etc). This is clearly a
"newbie" problem. In...