Re: [R] Scaling variables to positive values using scale() or performing BoxCox on negative data

2009-11-30 Thread Henry Thorogood
Great! Have managed to shift my dataset to positive. Thanks for all your help. Henry. 2009/11/30 David Winsemius > > On Nov 30, 2009, at 11:47 AM, Henry Thorogood wrote: > > The scale function seems to have tackled the skew, just looking at the >> boxplots for the data

Re: [R] Scaling variables to positive values using scale() or performing BoxCox on negative data

2009-11-30 Thread Henry Thorogood
Thanks again, Henry 2009/11/30 David Winsemius > > On Nov 30, 2009, at 11:02 AM, Henry Thorogood wrote: > > Hi, >> >> I'm doing some work with linear models, and I've scaled my data using the >> scale(dataset) function. This was great at removing the skew,

[R] Scaling variables to positive values using scale() or performing BoxCox on negative data

2009-11-30 Thread Henry Thorogood
Hi, I'm doing some work with linear models, and I've scaled my data using the scale(dataset) function. This was great at removing the skew, but I now can't perform the Box Cox transformation on the data set (using the boxcox(dataset) function), as the scaling has returned negative values. So my q