On 3/10/2017 2:24 AM, Ulrik Stervbo wrote:
Hi Evan,
the unite function of the tidyr package achieves the same as Jim
suggested, but in perhaps a slightly more readable manner.
Ulrik
I use perl for scripting, so readability isn't a big factor. ;-)
Thanks!
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On 3/10/2017 1:48 AM, Jim Lemon wrote:
Hi Evan,
How about this:
df2<-data.frame(Trt=df[,1],Conc=apply(df[,2:5],1,paste,sep="",collapse=""))
Jim
Thanks!
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On 3/10/2017 2:23 AM, Bert Gunter wrote:
I think you need to spend some time with an R tutorial or two,
especially with regard to indexing.
Unless I have misunderstood (apologies if I have),
df$Conc <- apply(df[,-1],1,paste,collapse="")
does it.
-- Bert
\
Thanks -- sage advice.
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Hi Evan,
the unite function of the tidyr package achieves the same as Jim suggested,
but in perhaps a slightly more readable manner.
Ulrik
On Fri, 10 Mar 2017 at 07:50 Jim Lemon wrote:
> Hi Evan,
> How about this:
>
> df2<-data.frame(Trt=df[,1],Conc=apply(df[,2:5],1,paste,sep="",collapse=""))
I think you need to spend some time with an R tutorial or two,
especially with regard to indexing.
Unless I have misunderstood (apologies if I have),
df$Conc <- apply(df[,-1],1,paste,collapse="")
does it.
-- Bert
Bert Gunter
"The trouble with having an open mind is that people keep coming al
Hi Evan,
How about this:
df2<-data.frame(Trt=df[,1],Conc=apply(df[,2:5],1,paste,sep="",collapse=""))
Jim
On Fri, Mar 10, 2017 at 3:16 PM, Evan Cooch wrote:
> Suppose I have the following data frame (call it df):
>
> Trt y1 y2 y3 y4
> A1A 1001
> A1B 1100
> A1 C
Suppose I have the following data frame (call it df):
Trt y1 y2 y3 y4
A1A 1001
A1B 1100
A1 C 0 10 1
A1D 111 1
What I want to do is concatenate columns y1 -> y4 into a contiguous
string (which I'll call df$conc), so that the final df looks l
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