readSource {madrat}

readSource

Description

Read in a source file and convert it to a MAgPIE object. The function is a wrapper for specific functions designed for the different possible source types.

Usage

readSource(
  type,
  subtype = NULL,
  subset = NULL,
  convert = TRUE,
  supplementary = FALSE
)

Arguments

type

A character string referring to the source type, e.g. "IEA" which would internally call a function called 'readIEA' (the "wrapped function"). A list of available source types can be retrieved with function getSources.

subtype

A character string. For some sources there are subtypes of the source, for these sources the subtype can be specified with this argument. If a source does not have subtypes, subtypes should not be set.

subset

A character string. Similar to subtype a source can also have subsets. A subsets can be used to only read part of the data. This can in particular make sense for huge data sets where reading in the whole data set might be impractical or even infeasible.

convert

Boolean indicating whether input data conversion to ISO countries should be done or not. In addition it can be set to "onlycorrect" for sources with a separate correctXXX-function.

supplementary

Boolean deciding whether a list including the actual data and metadata, or just the actual data is returned.

Value

The read-in data, usually a magpie object. If supplementary is TRUE a list including the data and metadata is returned instead. The temporal and data dimensionality should match the source data. The spatial dimension should either match the source data or, if the convert argument is set to TRUE, should be on ISO code country level.

Note

If a magpie object is returned magclass::clean_magpie is run and if convert = TRUE ISO code country level is checked.

Author(s)

Jan Philipp Dietrich, Anastasis Giannousakis, Lavinia Baumstark, Pascal Führlich

See Also

setConfig, downloadSource, readTau #' @note The underlying read-functions can return a magpie object or a list of information (preferred) back to readSource. In list format the object should have the following structure:

• x - the data itself as magclass object

• unit (optional) - unit of the provided data

• description (otional) - a short description of the data

• note (optional) - additional notes related to the data

• class (optional | default = "magpie") - Class of the returned object. If set to something other than "magpie" most functionality will not be available and is switched off!

• cache (optional) boolean which decides whether a cache file should be written (if caching is active) or not. Default setting is TRUE. This can be for instance useful, if the calculation itself is quick, but the corresponding file sizes are huge. Or if the caching for the given data type does not support storage in RDS format. CAUTION: Deactivating caching for a data set which should be part of a PUC file will corrupt the PUC file. Use with care.

Examples

## Not run: 
a <- readSource("Tau", "paper")

## End(Not run)