sugestion: goFlux without gastype

[Schuch666]

In the goFlux function, if the function is called without an argument gastype (but with a dataframe), can be included a menu to choose the variable from the data.frame or a print message with the variable names that can be used?

[Qepanna]

In the goFlux function, if the function is called without an argument gastype (but with a dataframe), can be included a menu to choose the variable from the data.frame or a print message with the variable names that can be used?

@Schuch666 I changed the error message for goFlux if gastype = NULL. Now, if no argument is provided to gastype, an error message is returned:

Error in goFlux(LGR_manID, gastype = NULL) : 
  'gastype' must be one of the following: 'CO2dry_ppm', 'CH4dry_ppb', 'COdry_ppb', 'N2Odry_ppb', 'NH3dry_ppb' or 'H2O_ppm'

[Schuch666]

This error is more informative

An suggestion for the future is to inform the available variables (if the right columns are present on the input data.frame and if contains any data)