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Friendly column finder for "not found" errors #2887

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MichaelChirico opened this issue May 18, 2018 · 1 comment
Closed

Friendly column finder for "not found" errors #2887

MichaelChirico opened this issue May 18, 2018 · 1 comment
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@MichaelChirico
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@MichaelChirico MichaelChirico commented May 18, 2018

Consider:

DT = data.table(myname = 1, some_var = 2)
DT[somevar == 2]
#  Error in eval(.massagei(isub), x, parent.frame()) : 
#   object 'somevar' not found 

Should be easy enough to run adist on names(DT) (or also ls()) to suggest some potential misspellings. Nothing too sophisticated of course, maybe just look within levensthein distance of 2 or 3. Truncated to 10 options or so in case there are numbered columns.

@HughParsonage
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@HughParsonage HughParsonage commented May 18, 2018

Or agrep:

 agrep("somevar", names(DT), value = TRUE)[1]
#> "some_var"

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