s2c: String to call
In rBatt/trawlData: Read and Clean Data from Bottom Trawl Surveys

Description Usage Arguments Details Value

Convert a character vector to a call of the desired class

1	s2c(x, type = "list")

`x`	a character string (e.g., of column names in a data.table)
`type`	the class resulting from the evaluation of the call returned by s2c

e.g., convert c("column1","column2") to list(column1, column2) intended for use in a data.table (see data.table)

a list

@examples library(data.table) first <- data.table(cray=sample(letters,4),"one"=c(1,2,3,4), "two"=c(1,3,5,7)) second <- data.table("cray"=sample(letters,35, TRUE)) oc <- CJ(one=first[,(one)], cray=second[[1]]) sub <- s2c(c("one","cray")) oc[,eval(sub)]

rBatt/trawlData documentation built on May 26, 2019, 7:45 p.m.