[R] summarize_ (NSE) in combination with quantile not working

Jeff Newmiller jdnewmil at dcn.davis.ca.us
Sun Nov 22 03:15:14 CET 2015

Please post using plain text. The following works. 

mutate %>% summarise_( ~quantile( mpg, 0.1 ) )

Read the vignette on nse that comes with dplyr,  or Google the error message. 

On November 21, 2015 3:33:16 PM PST, Tobias Byland <tobias at byland.info> wrote:
>Hi everyone,
>I am stumbling over the following issue when using the NSE
>evaluation) of the summarise function in dpylr (as described here: 
>mtcars  %>% summarise(min(mpg))      # summarize and min
>mtcars  %>% summarise_("min(mpg)")   # summarize_ and min
>mtcars  %>% summarise(quantile(mpg, 0.1))   # summarize and quantile
>mtcars  %>% summarise_("quantile(mpg, 0.1)")   # summarize_ and 
>quantile  -> ERROR
>The last (and only the last) call results in the following error:
>Error: could not find function "quantile"
>It seems to me, that the combination of summarise_ and quantile() 
>somehow doesn't work.
>Does anyone have an idea what the issue here is?
>Thanks a lot!
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Sent from my Android device with K-9 Mail. Please excuse my brevity.
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