Change class factor to numeric
as.numeric()
On Fri, 6 May 2005, Smit, R. (Robin) (IenT) wrote:
I am attempting to develop a multiple regression model using selected model variables that should all be treated as numeric (mostly real) values. However, R considers one specific variable "mass" automatically to be of class "factor", probably because "mass" consists of integer values that are repeated. I now want to force R to treat "mass" as a numeric variable in the regression but am not sure how to do this.
class(mass) <- "numeric"
does not help me. Could anyone advise me on this? Kind regards, Robin Smit -------------------------------------------- TNO Science & Technology Business Unit Automotive Environmental Studies & Testing PO Box 6033, 2600 JA Delft THE NETHERLANDS ph. +31 (0)15 269 7464 fax +31 (0)15 269 6874 robin.smit at tno.nl http://www.tno.nl/industrie_en_techniek/mobiliteit_en_(transport)/milieu studies/environmental_studies_and/ <http://www.tno.nl/industrie_en_techniek/mobiliteit_en_(transport)/milie ustudies/environmental_studies_and/> -------------------------------------------- This e-mail and its contents are subject to the DISCLAIMER at http://www.tno.nl/disclaimer/email.html [[alternative HTML version deleted]]
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