UndefVarError: categorical! in Julia

New to Julia
,
1

i am using julia version1.8.5. I define a variable "geordd_df“ with DataFrame function. There is a ”UndefVarError: categorical! not defined“ when i run “categorical!(geordd_df, :categ)” in julia

fig4
fig42040×807 226 KB

. can anyone help?

2

The reason you get this error is that there is no categorical! function defined.

You can do e.g.:

using CategoricalArrays
geordd_df.categ = categorical(geordd_df.categ)

or

using CategoricalArrays
transform!(geordd_df, :categ => categorical => :categ)

instead

3

@bkamins Thanks a lot for your quick response. The second method works well.