[R] Ghost variables

[Duncan Murdoch]

Those messages say that some code (presumably in your script) is 
referring to columns, not variables, with those names.  That isn't a 
message coming from base R, it's coming from some package that you are 
using, I think "tibble".

You can turn those warnings into errors by running

options(warn=2)

before your script, and then the script will die at the first warning.

Duncan Murdoch

On 25/02/2019 3:45 p.m., JLucke using ria.buffalo.edu wrote:
> The script is complete.  When I start, the environment is empty.
> The warnings are issued for these "ghost" variables well before they are
> created later in the script.
> Somehow previous incarnations are lingering around and being unhappy even
> after they were "deleted".
> Jeff Newmiller has suggested a solution I have yet to try.
> 
> 
> 
> 
> William Dunlap <wdunlap using tibco.com>
> 02/25/2019 02:30 PM
> 
> To
> JLucke using ria.buffalo.edu,
> cc
> r-help mailing list <r-help using r-project.org>
> Subject
> Re: [R] Ghost variables
> 
> 
> 
> 
> 
> 
> Doesn't that mean that your script is incomplete, that it needs to make
> those variables?
> 
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com
> 
> 
> On Mon, Feb 25, 2019 at 10:32 AM <JLucke using ria.buffalo.edu> wrote:
> Fellow R-gonauts:
> 
> I frequently erase/remove all the objects in my current environment so can
> 
> I re-run scripts to ensure that analyses are complete, error-free, and
> accurate.
> However, sometimes when I re-rerun a script I get warning messages (see
> below for example)  regarding some variables (objects) when these
> variables do not exist in my current environment.
> These ghost variables had existed at one time, but were subsequently
> removed by the rm(list=ls()) command or by the broom icon in RStudio.
> 
> What's happening and how do I exorcise the ghosts?
> 
> 
> Warning messages:
> 1: Unknown or uninitialised column: 'K'.
> 2: Unknown or uninitialised column: 'NDAfit'.
> 3: Unknown or uninitialised column: 'NDAfit'.
> 4: Unknown or uninitialised column: 'NDAfit'.
> 5: Unknown or uninitialised column: 'NDAfit'.
> 6: Unknown or uninitialised column: 'NDAfit'.
> 7: Unknown or uninitialised column: 'NDAobs'.
> 
> Joe Lucke
>          [[alternative HTML version deleted]]
> 
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> ______________________________________________
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