exportDataset throwing an error

[jack-nicol]

I'm attempting a simple export, but keep having a break occur (example below):

library(crunch)
login()
ds <- loadDataset("SURVEY NAME")
exportDataset(ds)
Error in match.arg(format, choices = names(exporters)) : 
  'arg' must be of length 1

not sure why this no longer works, but I'm wondering if exportDataset now needs the format option to be explicitly declared?

[jack-nicol]

looks like the issue is that file and format arguments must be declared or this function will break. not sure its a real issue in need of fixing

[gergness]

Hm, yeah, I think file has always been required, and the code for format hasn't changed recently, but possibly a change to R broke it. It would be pretty easy to fix.

I think it should guess the format from the filename by default, (eg file = "data.csv" would be csv, and file = "data.sav" would be spss), does that sound right to you?

[jack-nicol]

yes, that does. I actually think more explicit error messages here would be better, so that if format is not declared, the user is prompted to pick either csv or spss for that argument, and then if no file is declared the default is exactly as you described, so long as the format is chosen.