standardize: Standardize Ratio Study Variables
In jh-206/taxr: Tax Assessment Ratio Analysis

Rename Columns

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standardize(df, assessed, saleprice = NULL, uid = NULL,
  saledate = NULL, living_area = NULL, lot_area = NULL, asr = NULL,
  x = NULL, y = NULL, calc_asr = T)

`df`	Dataframe of values
`assessed`	Character string indicating column in `df` that is to be renamed `assessed`.
`saleprice`	Character string indicating column in `df` that is to be renamed `saleprice`.
`uid`	Character string indicating column in `df` that is to be renamed `uid`, i.e. unique ID.
`saledate`	Character string indicating column in `df` that is to be renamed `saledate`.
`living_area`	Character string indicating column in `df` that is to be renamed `living_area`.
`lot_area`	Character string indicating column in `df` that is to be renamed `lot_area`.
`asr`	Character string indicating column in `df` that is to be renamed `asr`, i.e. assessed to sale ratio.
`x`	Character string indicating column in `df` that is to be renamed `x`, i.e. longitude coordinate.
`y`	Character string indicating column in `df` that is to be renamed `y`, i.e. latitude coordinate.
`calc_asr`	Logical indicating whether to calculate the assessed to value ratio (asr).