Hi
> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Shivi82
> Sent: Monday, June 08, 2015 12:48 PM
> To: r-help at r-project.org
> Subject: [R] Cannot Sum with DDPLY
>
> Hi All,
> Kindly see the below code I have used:
> maxorder<-ddply(test, ~ ORIGIN,summarize,Weight=sum(CHG_WT))
>
> Here I have written the code to summarize values based on origin and
> total weight however I am getting below error:
> Error: ?sum? not meaningful for factors
I consider this error message as ***extremely*** informative. Your CHG_WT is
actually the factor object and sum is not meaningful for factors.
Maybe it is time for you to check R-Intro document about objects and their
differences before you continue with posting.
If CHG_WT shall be numeric you probably did not read it correctly for whatever
reason.
Cheers
Petr
>
> Please advice. I need CHG_WT total for each state in the Origin column.
>
>
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/Cannot-Sum-
> with-DDPLY-tp4708338.html
> Sent from the R help mailing list archive at Nabble.com.
>
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