16 June 2003 GRBL: A set of econometric programs for environmental valuation Synopsis: GRBL is a set of GAUSS programs that implement models often used in environmental valuation. They were created mostly by Daniel Hellerstein (202 694-5613, danielh@ers.usda.gov). They can be used freely, but please do cite! Requirements: These programs are designed to work with GAUSS 3.2. For those who do not own GAUSS 3.2, a "run-time" module is included (see README.RT for the details). UNFORTUNATELY, in the infinite wisdom of Micro$oft, GAUSS 3.2 can NOT run under Win 2000 or Win XP (problems with support for DPMI memory). Thus, to use the run-time module (or GAUSS 3.2), you will need something before WIN 2000 (i.e.; DOS, WIN 95, WIN 98, or WIN ME). We are working on a replacment for GRBL (GRBL2) that will run under later versions of Windows. Check back sometime in Fall 2003! Installation: 1) If you don't have a x:\GAUSS directory, create one (x: can be any one of your drives). 2) Create a x:\GAUSS\GRBL directory 3) Copy the GRBL_603.ZIP file to x:\GAUSS\GRBL 4) UNzip GRBL_603 into this x:\GAUSS\GRBL -- be sure that you unZip program retains the directory structure! Usage: If you do not have GAUSS 3.2, you can use the Gauss Run Time module that is included with GRBL. To do this: a) Open up a DOS box b) CD to the x:\GAUSS\GRBL directory c) Run ANSI.COM (in this directory) Or, see ANSI.TXT for instructions on how to install ANSI support for your operating system. d) Use GSRUN to run one of the GRBL programs For example: x:\GAUSS\GRBL>gsrun tobit If you have GAUSS 3.2 installed, you can run any of the .GCG files directly from the GAUSS prompt. Note that for GRBL's help to work, your SRC_PATH GAUSS variable (set in GAUSSI.CGG) should include "x:\gauss\grbl". GRBL Programs Included: ASHLEY.GCG -- perform ashley test of improvements in MSE of forecasts of competing models CVM.GCG -- several logit, probit, and semi-parametric estimators useful for Contingent Valuation modeling COUNTPNL.GCG -- several count-panel estimators CS.GCG -- several consumer surplus estimators DLOGIT.GCG -- double bounded logit estimators DPROBIT.GCG -- double bounded probit estimators EDITDATA.GCG -- edit & view GAUSS data files ELASTIC.GCG -- compute elasticities for several models (including TOBIT) FREQ.GCG -- display simple frequencies GOF.GCG -- Several goodness of fit tests (generalizations of R-Square) GRBLINI.GCG -- tweak a few GRBL display parameters MAPLOCS.GCG -- use data on reference points, defined with latitude and longitude, to impute values to "target points" MKPANL.GCG -- simple program to generate a simulated panel dataset MNL.GCG -- Several Multi-Nomial logit models MNLGLS.GCG -- GLS estimator of simple MNL model (beta version) OLS.GCG -- Several OLS estimators PANELREG.GCG -- Several linear panel regression models TESTS.GCG -- Compute F-tests, and Hausman tests TOBIT.GCG -- several TOBIT estimators SERPANEL.GCG -- several linear panel regression models that account for serial correlation GAUSS Run-Time files: GSRUN.EXE -- the GAUSS run time module: it runs the .GCG files GSRUN.OVR -- used by GSRUN.EXE GSRUN.CFG -- configuration parameters for GSRUN. You might find it useful to change some of the variables (such as the maximum workspace). README.RT -- Short description of how to use GSRUN. VMRUN.BAT -- Set the workspace that GSRUN will use. Run VMRUN (from a DOS prompt) and a short description will be displayed. CFIG386.EXE -- Used by VMRUN.BAT Other useful programs: ATOG386.EXE -- Convert ASCII files to GAUSS datasets ANSI.COM -- Enable ANSI support Directories: PRG -- Source code for GRBL files (and other GAUSS programs) HELP -- on line help files DOCS -- some documentation files SAMPLES -- some sample data files, and sample GRBL "batch" files Source code: The source code is in the PRG directory Help: Most of these programs contain some on-line help. The DOCS subdirectory also contains some additional documentation.