# ArgumentError y = \[y;df\[:,Symbol(v)\]\]

**URL:** <https://discourse.julialang.org/t/argumenterror-y-y-df-symbol-v/38198>\
**Category:** General Usage\
**Tags:** question\
**Created:** [April 25, 2020, 4:04pm UTC](https://discourse.julialang.org/t/argumenterror-y-y-df-symbol-v/38198 "2020-04-25T16:04:37Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Henrique\_Becker](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/henrique_becker/32/15443_2.png) [@Henrique\_Becker](https://discourse.julialang.org/u/Henrique_Becker)\
**Post date:** [April 25, 2020, 7:25pm UTC](https://discourse.julialang.org/t/argumenterror-y-y-df-symbol-v/38198/2 "2020-04-25T19:25:29Z")

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Please, follow [our best practices when asking for help](https://discourse.julialang.org/t/psa-make-it-easier-to-help-you/14757).

The error seems to be self-explanatory, you are trying to access a column named `:y1` in a dataframe, but it does not have a column with such name, the column with the most similar name is `:y`. Should your dataframe have a column named `:y1`? It is impossible to me to say without a Minimal Working Example (MWE). Also, are you trying to get a vector or a single value from the dataframe? (the syntax `[a; b]` allows `a` and `b` be either elements or vectors).

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