R: Check that input variables to melt are appropriate.

melt_check {reshape2} | R Documentation

## Check that input variables to melt are appropriate.

### Description

If id.vars or measure.vars are missing, `melt_check` will do its best to impute them. If you only supply one of id.vars and measure.vars, melt will assume the remainder of the variables in the data set belong to the other. If you supply neither, melt will assume discrete variables are id variables and all other are measured.

### Usage

    melt_check(data, id.vars, measure.vars, variable.name, value.name)

### Arguments

`data` | data frame
`id.vars` | vector of identifying variable names or indexes
`measure.vars` | vector of Measured variable names or indexes
`variable.name` | name of variable used to store measured variable names
`value.name` | name of variable used to store values

### Value

a list giving id and measure variables names.

[Package reshape2 version 1.4.3 Index]