.list.data: Build the list of data available for loading into memory

Description

This function produces a data.frame of all data files in the project, with meta data on if and how the file will be loaded by load.project.

Usage

.list.data(config)

Value

A data.frame listing the available data, with relevant meta data

Arguments

config: List containing the configuration to use.

Details

The returned data.frame contains the following variables, with one observation per file in data/:

`filename`	Character variable containing the filename relative to `data/` directory.
`varname`	Character variable containing the name of the variable into which the file will be imported. *
`is_ignored`	Logical variable that indicates whether the file. is ignored through the `data_ignore` option in the configuration
`is_directory`	Logical variable that indicates whether the file is a directory.
`is_cached`	Logical variable that indicates whether the file is already available in the `cache/` directory.
`cached_only`	Logical variable that indicates whether the variable is only available in the `cache/` directory. This occurs when calling the cache function with a code fragment in a munge script.
`reader`	Character variable containing the name of the reader function that will be used to load the data. Contains a `character(0)` if no suitable reader was found.

* Note that some readers return more than one variable, usually with the listed variable name as prefix. This is true for for example the xls.reader and xlsx.reader.