On Tue, 29 Nov 2011, Rich Shepard wrote:
Pointers on how to determine why this one variable has some values and
characters rather than as numerics are needed.
Joshua, Marc, David, Bill, Sarah, Bert, et al.:
Thank you all for the insights and ideas. It was a valuable lesson and it
helped me
rd
> Sent: Tuesday, November 29, 2011 11:19 AM
> To: r-help@r-project.org
> Subject: [R] Why Numeric Values Become Factors in Data Frame
>
>I have a data frame with 1 factor, one date, and 37 numeric values:
> str(waterchem)
> 'data.frame': 3525 obs. of 39 varia
On Nov 29, 2011, at 1:18 PM, Rich Shepard wrote:
> I have a data frame with 1 factor, one date, and 37 numeric values:
> str(waterchem)
> 'data.frame': 3525 obs. of 39 variables:
> site : Factor w/ 64 levels "D-1","D-2","D-3",..: 1 1 1 1 1 ...
> $ sampdate : Date, format: "2007-12-12" "20
On Nov 29, 2011, at 2:18 PM, Rich Shepard wrote:
I have a data frame with 1 factor, one date, and 37 numeric values:
str(waterchem)
'data.frame': 3525 obs. of 39 variables:
site : Factor w/ 64 levels "D-1","D-2","D-3",..: 1 1 1 1 1 ...
$ sampdate : Date, format: "2007-12-12" "2008-03
Hi Rich,
Try looking at:
levels(waterchem$SC)
There must be something in that column that is triggering R to read it
as character. Potential examples include using "." to indicate
missing values or anything else that is not itself directly numeric.
You might also get some mileadge out of attemp
I have a data frame with 1 factor, one date, and 37 numeric values:
str(waterchem)
'data.frame': 3525 obs. of 39 variables:
site : Factor w/ 64 levels "D-1","D-2","D-3",..: 1 1 1 1 1 ...
$ sampdate : Date, format: "2007-12-12" "2008-03-15" ...
$ CO3 : num 1 1 6.7 1 1 1 1 1 1
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