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metacoder (version 0.3.7)

names_used: Get names of data used in expressions

Description

Get names of available data used in expressions. This is used to find data for use with [non-standard evaluation](http://adv-r.had.co.nz/Computing-on-the-language.html) (NSE) in functions like [filter_taxa()]. Expressions are not evaluated and do not need to make sense.


obj$names_used(...)

Value

Named `character`

Arguments

obj

a [taxonomy()] or [taxmap()] object

...

One or more expressions

See Also

Other NSE helpers: all_names(), data_used, get_data()

Examples

Run this code
ex_taxmap$names_used(n_legs + dangerous == invalid_expression)

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