The aim of the SplitCom project is to develop a set of programs to facilitate the addition of sectors to a standard GTAP database. For example, one might wish to split GTAP's mvh (motor vehicles and parts) sector into three: "Cars", "OtherMV" and "MVparts".

Mark Horridge completed initial versions of these programs at end 2005; development continues (slowly).

Three groups kindly agreed to sponsor the project, namely:

This web-page allows sponsors or other interested parties to download current versions of SplitCom programs.


Initial version [Nov 2005][minor updates Feb 2007, Jan 2008, Oct 2008]

Download splitcom.zip (14.7 Mb) and unzip into an empty new folder with a short and simple name (such as C:\SplitCom). Print out and study the file SplitCom.Doc before experimenting with the programs.

Short form of initial version [Nov 2005][minor updates Feb 2007, Jan 2008, Oct 2008]

Only of use to those with a slow internet connection and a source code installation of GEMPACK 9 or later. Unzip splitsht.zip (1.52 Mb) into an empty new folder (eg, C:\SplitCom). Then run script CompAllF.bat to generate necessary EXE/AXS/AXT files.

Note January 2021:. Splitcom is designed to work with the 'classic' data format used by Version 6 of the GTAP model. In particular it assumes that industries are single-output, and each commodity is made by just one industry, so no MAKE (Multiproduction) matrix is needed. The newer Version 7 of the GTAP model uses a different data format which allows for multiproduction and for the industry and commodity sets to differ. GTAPAgg2 produces data in the 'classic' Version 6 format -- but it then uses programs to convert this into the newer Version 7 format (the V7 files are stored in a separate zip). If using SplitCom, your simplest course is to stick with the 'classic' Version 6 GTAP model, which precludes multiproduction. However, suppose you wished to split electricity into several generating technologies (Coal, Nuclear, Solar, Wind) producing just one Electricity commodity (needing the later V7 model and format). Starting with data in V6 format, you would split the Electricity sector into 4 parts. Diagonal Make is assumed so both industries and commodities would be split. At this stage your new disaggregated data would be in V6 format. Using programs included with GTAPAGG2 you could convert this to the V7 format (ask Erwin Corong at the GTAP Centre for details). Then you could use AggHAR to combine the 4 electricity commodities (Coal, Nuclear, Solar, Wind) into just one Electricity commodity (producing non-diagonal MAKE).

See also:

More advanced version of SplitCom -- splits several sectors at once
TASTE -- GTAP-compatible HS6-level bilateral trade and tariff data
SplitReg program to split GTAP regions.
GTAPAdjust program to rebalance GTAP database.
Links to other models and programs by Mark Horridge
GTAP Home Page
CoPS Home Page (bottom of this page has "Search COPS site")