wgdx.reshape: Reshape R data to prepare it for writing to GDX

In GAMS-dev/gdxrrw-miro: An Interface Between 'GAMS' and R (modified somewhat for MIRO)

Reshape R data to prepare it for writing to GDX

Description

Reshape the input data frame (assumed to be in "wide" form) into a "long" form suitable for passing to wgdx.lst or wgdx.df.

Usage

  wgdx.reshape(inDF, symDim, symName=NULL, tName="time",
               gdxName=NULL, setsToo=TRUE, order=NULL,
               setNames=NULL)

Arguments

inDF	data frame in "wide" form
symDim	dimension of the output GDX symbol
symName	name of the output GDX symbol
tName	index set name for the new index position created by reshaping
gdxName	name of the GDX file to write
setsToo	if TRUE, extract the index sets defined by inDF
order	specify the selection and ordering of the index columns when reshaping
setNames	specify explanatory text for the extracted index sets

Note

A common problem is failure to load the external GDX libraries that are required to interface with GDX data. Use igdx to troubleshoot and solve this problem.

There is also the issue of our dependence on the reshape package. This still needs to be tightened up.

This routine is experimental/prototype work and perhaps temporary. Don't use it for production work.

Author(s)

Original coding by Steve Dirkse. Maintainer: [e-mail]

See Also

wgdx, igdx, rgdx, gdxInfo

Examples

  # take a sample dataset and reshape it
  str(airquality);
  oList <- wgdx.reshape (airquality, 3, symName="airquality",
                         tName = "dataType", order=c(5,6,0))
  ## Not run: 
    # send the data to GDX
    wgdx.lst("airquality", oList)
  
## End(Not run)

  ## Not run: 
    # complete tests and examples can be run in the
    # extdata directory of the gdxrrw package
    # check .libPaths for a hint on where packages are installed
    setwd(paste(.libPaths()[1],"/gdxrrw/extdata",sep=""))
    source("tAll.R")
  
## End(Not run)

GAMS-dev/gdxrrw-miro documentation built on July 11, 2024, 4:39 p.m.