R help - Jul 2016 - Turn character /string as variable/column name in summarize in dplyr

Hi all,


Trying to turn string in to variable in dplyr , it R interprets it as strings
rather than column name in the data.

Any ideas?


shock5 =paste0(shocksName[5],"fit")
  print(shock5)

  x<-group_by(plotdata,grp) %>% summarize(
    Actuals=sum(weight*response/sum(weight)),
...
...
    #
assign(shocksName[4],sum(weight*as.name(paste(shocksName[4],"fit"))/sum(weight))),
     assign(shocksName[5],sum(weight*(as.environment(shock5)) /sum(weight)))
  )


Sent from Outlook<http://aka.ms/weboutlook>

	[[alternative HTML version deleted]]

It really might help to have a minimum working example
Have a look at 
http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
and/or 
http://adv-r.had.co.nz/Reproducibility.html

John Kane
Kingston ON Canada

> -----Original Message-----
> From: chenmenis at hotmail.com
> Sent: Fri, 22 Jul 2016 14:08:45 +0000
> To: r-help at r-project.org
> Subject: [R] Turn character /string as variable/column name in summarize
> in dplyr
> 
> Hi all,
> 
> 
> Trying to turn string in to variable in dplyr , it R interprets it as
> strings rather than column name in the data.
> 
> Any ideas?
> 
> 
> shock5 =paste0(shocksName[5],"fit")
>   print(shock5)
> 
>   x<-group_by(plotdata,grp) %>% summarize(
>     Actuals=sum(weight*response/sum(weight)),
> ...
> ...
>     #
>
assign(shocksName[4],sum(weight*as.name(paste(shocksName[4],"fit"))/sum(weight))),
>      assign(shocksName[5],sum(weight*(as.environment(shock5))
> /sum(weight)))
>   )
> 
> 
> Sent from Outlook<http://aka.ms/weboutlook>
> 
> 	[[alternative HTML version deleted]]
> 
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