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Resources for Economists on the Internet, Vol. 4, No. 2, September, 1999 Editor: Bill Goffe <Bill.Goffe@usm.edu> Editorial Assistant: Elise Braden <elise@econlit.org> Part 18 of 20 This guide, sponsored by the American Economic Association, lists more than 1,000 resources on the Internet of interest to academic and practicing economists, and those interested in economics. Almost all resources are also described. Resources for Economists on the Internet (RFE) is a copyrighted work of the American Economic Association (the "AEA"). Permission to make digital, electronic or hard copies of part or all of RFE for personal or classroom use, Usenet distribution, or mailing lists is granted, provided that copies are not made or distributed for profit or direct commercial advantage and that whole copies show the following notice: "Resources for Economists on the Internet (RFE), Copyright 1999 American Economic Association" Otherwise the AEA owns the exclusive right to print, publish, distribute, reproduce, sell, prepare derivative works, transmit, download, or otherwise transfer copies of RFE. Copyrights of components of this work owned by others than the AEA must be honored and attributed to the rightful owner. Abstracting and short quotes are permitted. To copy otherwise or to republish otherwise, including on web pages, in whole or in part requires prior specific permission. Permissions may be requested from the American Economic Association, 2014 Broadway, Suite 305, Nashville, TN 37203, or via E-mail: aeainfo@ctrvax.vanderbilt.edu. RFE is provided without any express or implied warranty. ---------------------------------------------------------------------- For distribution via Usenet, this FAQ is split into 20 parts as large files don't travel well on Usenet. For other locations of this guide, see the section titled "1.5 Where to Obtain This Guide" in part 2. 13.0 Software 13.1.0 Internet Software 13.1.1 Adobe Acrobat Reader [freely available software to read "PDF" files] Adobe Acrobat PDF (portable document file) files contain all the information needed to fully describe a document: fonts, graphics, and even colors. It is a very useful way to exchange files that have such features, such as working papers. The IRS even uses PDF files to distribute tax forms through the Internet. To read PDF files, you need an Acrobat "reader." Adobe makes readers available freely at this site (they generate revenue from the software that creates PDF files). It is easy to configure web browsers to automatically invoke readers when they encounter PDF files. # http://www.adobe.com/ 13.1.2 Ghostscript, Ghostview, and GSview [freely available software to read "PostScript" files] This set of freely available software lets you read PostScript and PDF documents on your PC, and print them. Ghostscript prints them, while Ghostview and GSview display them on your PC (Ghostview is for Unix platforms, and GSview is for Windows platforms; both require Ghostview). This software is freely available. # http://www.cs.wisc.edu/~ghost/ 13.1.3 Netscape [leading browser manufacturer] Netscape makes the leading browser for the Internet. Its use is now free for all users, and the source code is available as well for the next version. # http://www.netscape.com/ 13.1.4 Real Networks [leading audio-visual software] This firm provides the leading audio and video software for the Internet. Some versions of their "player" software are freely available, and many platforms are available. # http://www.real.com/ 13.1.5 uuencode/uudecode [enables binary files to be e-mailed] If you don't have access to e-mail "attachments" (which use a technology known as "MIME"), this pair of programs can let you e-mail binary programs and data. Uuencode takes a binary file (such as a word processing file or a program) and converts it to text so that it can be e-mailed. Uudecode than converts it back to binary. Using this pair of programs, researchers can collaborate by e-mailing binary data or word processing files. (If one host is an IBM mainframe, be sure to use the -x option.) # ftp://ftp.TeX.ac.UK/ctan/tex-archive/archive-tools/uue/ 13.1.6 WinZip [leading decompression program] This very useful Windows shareware utility can decompress most any type of compressed or archived file found on the Internet (this includes ".tar" and ".gz" files). The $29 price is money well spent. It also operates as "add-on" for browsers to decompress from files from the net -- they can thus be downloaded in one step. # http://www.winzip.com/winzip/ 13.1.7 xpdf [another PDF file viewer] Derek Noonburg has written a pdf viewer for systems running X Window as an alternative to Adobe's version. Versions for many Unix systems can be found here. # http://www.foolabs.com/xpdf/ 13.2.0 Software Program Libraries 13.2.1 Guide to Available Mathematical Software (GAMS) [guide to 9,000 numerical routines] This database contains information on almost 9,000 numerical routines from about 80 packages. It can be searched interactively in several different ways and is frequently updated. It is run by the U.S. National Institute of Standards. # http://gams.nist.gov/ # telnet://gams@gams.nist.gov 13.2.2 Netlib [leading archive for numerical software] Netlib is a numerical software library with approximately 50 megabytes of code. The routines, mostly in Fortran, are generally of high quality (many were developed at U.S. national labs or by professional numerical analysts). The popularity of Netlib is attested by the number of times it has been contacted -- at last count, nearly 23 million times. Packages include Linpack, Eispack, and their successor, Lapack (including a pre-release version in C), fftpack, the Harwell sparse matrix routines, Hompack, Lanczos, and Minpack. There are many other more specialized libraries. There is also code from various texts (but not Numerical Recipes), and code from the ACM Transactions on Mathematical Software (more than 500 different routines here alone). There are also many directories organized not by package, but by subject (each entry is code by different authors). Finally, there are various tools for Fortran and C users. In all, there are nearly 150 directories covering nearly every imaginable area in numerical computation. Any user of numerical methods would be well advised to be familiar with it. Netlib is available via e-mail, ftp, gopher, and the web. Introductory material on Netlib can be found in the first entries of the web, ftp, and gopher interfaces. For an e-mail. introduction, write "send index" in the body of a message addressed to one of the sites listed below, and in return you will receive general directions. You can search the contents of Netlib via e-mail (the method is explained in the e-mail directions) and via the web interface. The latter is more flexible, but you must carefully read the directions. The netlib2 ftp site, web and gopher sites contain uncompressed files. # http://www.netlib.org/ # gopher://netlib2.cs.utk.edu:70/1/ # ftp://netlib2.cs.utk.edu # Mail Site: <netlib@ornl.gov> # ATT Mirror: <netlib@research.att.com> # UK Mirror: <netlib@unix.hensa.ac.uk> # Norway Mirror: <netlib@nac.no> # Australia Mirror: <netlib@draci.cs.uow.edu.au> 13.2.3 CodEc: Code for Economics and Econometrics [general archive] CodEc, part of the NetEc, contains computer programs of interest to economists. Different hardware platforms, programming languages, and application languages are supported. They include C and C++, DOS and Windows executables, Fortran, Gauss, Mathematica, Matlab, Rats, Shazam, and Xlisp-Stat. In all, there are about 20 different programs and packages, some of which are quite extensive. For instance, it includes Hal Varian's Mathematica Notebooks for "Microeconomic Analysis," Matlab routines from Hansen and Sargent's "Recursive Linear Models of Dynamic Economies," routines from Estima (who produces Rats), Lin's "GAUSS Programming for Econometricians" (with routines for least squares, simultaneous least squares, arima models, and nonlinear optimization),Gary Langer's BCI Data Manager, Rizzo's GAUSS routines for Tobit and Probit models, King's maximum likelihood routines for GAUSS, C++ matrix classes by both Chris Birchenhall and Robert Davies, King's "count+duration" regression software, Haerdle's "XploRe" for nonparametric regression and data-analysis as well as other programs. Information on the programs is identified by "software information" files that identifies the author, a description, software required, etc. CodEc also provides links to other code archives as well as links to some companies that offer programs frequently used by economists. Dirk Eddelbuettel kindly helped edit this entry. # http://netec.wustl.edu/CodEc.html # http://netec.mcc.ac.uk/CodEc.html # http://netec.ier.hit-u.ac.jp/CodEc.html # Information: Dirk Eddelbuettel <edd@qed.econ.queensu.ca> 13.2.4 Econometrics Laboratory Software Archive (ELSA) [archives and tests software for economists] This site at UC Berkeley is partially funded by the NSF. It is designed to " facilitate the interchange of computational algorithms that have economic applications. In addition to serving as a central location for experimental software, we want to work with developers of algorithms, at Berkeley and elsewhere, to produce standards for documentation and testing that will facilitate the exchange of new methodologies and solutions to complex computational problems. Authors of software that have potential applicability in economics are encouraged to submit algorithms that conform to our documentation and testing paradigm." One unique aspect of ELSA is that where possible, code is tested, so users have some assurance of quality. Researchers can easily submit their code to the archive; they have detailed instructions on how to do so. The archive also includes some data, and they round out their collection with a section on "Manuals, FAQs, and Working Papers" in the field. # http://elsa.berkeley.edu/ 13.2.5 GAUSS Source Code Archive at American Univ. [key GAUSS repository] This library is devoted to GAUSS programs. Be careful to read the file titled "READ ME FIRST" describing the conditions and terms of programs in it. In particular, it is for public, non-commercial code, the code should be clearly attributed, and documented. This file contains details on how to submit code to the library. Besides listing code stored here, it also lists many other site with GAUSS code. # http://gurukul.ucc.american.edu/econ/gaussres/GAUSSIDX.HTM 13.2.6 Statlib [archive for statistical software] Statlib is a system similar to Netlib (in fact, it uses roughly the same e-mail software) for statistical software. Major holding include algorithms from Applied Statistics, numerous classic datasets (although few are economic), software for Minitab and S, and a variety of other software under a heading named "general." For the e-mail interface, send the phrase "send index" in the body of your message. # http://lib.stat.cmu.edu/ # E-Mail <statlib@lib.stat.cmu.edu> 13.2.7 Xlisp-Stat Archive [commonly used by statisticians] This archive of programs for this package is divided into several sections. It includes links to other Xlisp sites, code, contributed programs, and documentation. # http://www.stat.ucla.edu/develop/lisp/xlisp/xlisp-stat/ 13.2.8 Software for Agent-Based Computational Economics (ACE) [archive for this new field] This new area of research, which includes "complex adaptive systems," and is quite computational, has this on-line archive for its software. Each of the different packages is clearly described. # http://www.econ.iastate.edu/tesfatsi/acecode.htm 13.3.0 Statistical and Computational Software 13.3.1 AREMOS (WEFA Group) This software, a product of WEFA Group, is designed to both manage and analyze time series. It is also is said to feature extensive presentation facilities. It is available for a number of packages. # http://www.wefa.com/capabilities/software/aremos.cfm 13.3.2 AUTOBOX This company offers a sophisticated automatic time series forecasting engine. At this site, they offer extensive information on their products. You can even follow an example of solving a problem. Their products are available for a number of platforms. # http://www.autobox.com/ 13.3.3 BETA (Laissez Faire Software) This firm produces BETA, a wide ranging econometrics program. Versions are available for DOS, Windows and OS/2. # Information: <LaissezF@aol.com> 13.3.4 ComLabGames [on-line strategic and extensive form games] This site provides software and directions for running strategic and extensive form games over the Internet. One PC acts as the moderator that sets the rules of the games, and others can then simultaneously play. When the game is done, the results can be analyzed. Thus, it is an excellent teaching device for game theory. Both the software and extensive directions can be found here. # http://www.cmu.edu/comlabgames 13.3.5 EPS (DRI/McGraw-Hill) This product from DRI/McGraw-Hill "...features a broad range of econometric and statistical functions for the creation and analysis of time-series and multi-dimensional data. EPS also includes powerful programming capabilities that simplify data manipulation and model-building." It also has many features for analyzing financial markets. In short, it is a completely integrated package for time series analysis. # http://www.dri.mcgraw-hill.com/dataprod.htm 13.3.6 EXPO & EXPO/SE (Leading Market Technologies) This company's products are often used for analysis in the financial industry. "It's flagship product EXPO has a powerful backbone of mathematical, statistical, and time series analysis routines, paired with a highly visual, customizable, easy-access front-end." They also offer a high speed server. Many of their products can be downloaded for a free trial. They also offer a free student version. It is a subset of the regular version in only two ways: it supports only 12 open windows, and it cannot perform realtime analysis. # http://www.lmt-expo.com/ 13.3.7 GAMS "The General Algebraic Modeling System (GAMS) is a high-level modeling system for mathematical programming problems. It consists of a language compiler and a stable of integrated high-performance solvers. GAMS is tailored for complex, large scale modeling applications, and allows you build large maintainable models that can be adapted quickly to new situations." It can run on machines that vary in size from PC to supercomputers. At this site you can read about GAMS, including solvers and supported platforms. They also offer extensive documentation (including FAQs and an index to their model library), information on contributed software, and material on workshops and courses. # http://www.gams.com/ # Information: <gams@gams.com> 13.3.8 GAUSS (Aptech) This site offers information on this very popular software package for econometrics. Specifically, they offer information on GAUSS and products for it, new features and products, information on where to buy it, comments from users, and links to related sites. # http://www.aptech.com/ # Information: <info@Aptech.com> # Orders: <sales@Aptech.com> # Technical Support: <support@Aptech.com> 13.3.9 Ivation (Beyond 20/20) This company's product, "Beyond 20/20," "... is the multidimensional software system chosen by information providers and publishers to organize, manage, and deliver statistical data to their customers." With it, one can easily view and analyze complex datasets from many different perspectives in many different ways. It is easy to output data to other statistical tools. Their customers include many major statistical agencies. # http://www.ivation.com/ 13.3.10 Limdep "LIMDEP is the premier program for estimation and analysis of regression models, and qualitative and limited dependent variables. No other program offers a greater variety of modeling frameworks, tools and features for analysis of cross section, panel, and time series data." The latest version of LIMDEP, 7.0, include a complete Windows interface (new statistical features are in the mainframe version as well). You can find extensive details about the program here (along with details on NLOGIT 2.0), ordering information (including ordering on-line), a discussion list, contact information, and an on-line manual. # http://www.limdep.com 13.3.11 LINDO This company specializes in optimization software. This includes linear and nonlinear programming, as well as spreadsheet plug-ins. You can find information about their products here. # http://www.lindo.com/ # Information: <info@lindo.com> 13.3.12 MLE++ and MLEQuick (Cahill Software) Cahill Software offers MLE++, a C++ class library for maximum likelihood estimation. This offers greater flexibility than "canned" routines. They also offer a menu driven package, MLEQuick, for "discrete dependent variable models, censored and truncated models, and survival analysis." Finally, Cahill Software can be hired for contract programming, with a specialty in "statistical estimation programs and simulation models." # http://www.magma.ca/~cahill/ 13.3.13 MODLER This package, which has been in development since its inception in 1968, was originally designed for the econometric analysis of small or large scale econometric models. It has expanded into other areas, including data management, general statistical analysis, and simulations. It also offers close integration with common desktop applications. It is in use by organizations around the world, and it is available in different "sizes" (i.e. the maximum number of equations a version can handle). # http://www.modler.com/ 13.3.14 Otter Research Ltd. (AD Model Builder & MULTIFAN) This company offers two products: AD Model Builder and MULTIFAN. The former "is a tool for the rapid development and implementation of nonlinear statistical models." It is said to have a number of useful features: derivatives are calculated without intervention and very efficiently, the Hessian and covariance matrices are automatically available, etc. Programs, documentation, and a trial version are available here. The other product, MULTIFAN, "is used to estimate growth and mortality for fishes and other species using length frequency data." An advanced version, MULTIFAN-CL is now available as well. # http://www.island.net/~otter/ 13.3.15 Maple (Waterloo Maple) This firm's main product is "Maple," a symbolic algebra program that also does two and three-dimensional graphics and arbitrary precision numbers. The offer extensive information and support on the product here: a library of books on Maple, information for their customers, and on-line registration. # http://www.maplesoft.com/ 13.3.16 MathCad & S Plus (Mathsoft) This company produces two products that might interest economists -- MathCad and S Plus. The former turns your computer into a "live worksheet" where you can perform numerous types of calculations. The latter is an object-oriented statistical analysis program. It has a large following in the statistics community. Extensive information on both of these programs can be found here. # http://www.mathsoft.com/ 13.3.17 Mathematica (Wolfram Research) This web site has a variety of information on their Mathematica product, including information on customer support, student versions, product information, technical information, and MathSource, which is said to be "the largest collection of packages, notebooks, examples, and programs available." You can also order Mathematica here, and update your current version. # http://www.wri.com/ 13.3.18 MATLAB and SIMULINK (MathWorks) This site offers extensive information about their products. You can read about the features of MATLAB, SIMULINK, Toolboxes and Blocksets, extensive support information. You can also retrieve user-contributed and MathWorks-written software, read about MATLAB books, and also read material from the many different forums that discuss MATLAB. # http://www.mathworks.com/ # Sales, Pricing and General Info: <info@mathworks.com> # Technical Support: <support@mathworks.com> # Bug Reports: <bugs@mathworks.com> 13.3.19 Microfit This Windows and DOS program is written by Dr. Hashem Pesaran of the University of Cambridge and Dr. Bahram Pesaran of Tudor Proprietary Trading L.L.C. "For the econometric analysis of time series data Microfit is an unrivaled package. With its extensive choice of data analysis options, this program is a versatile aid to all those interested in the evaluation and design of advanced univariate and multivariate time series models." It is said to be used at a number or central banks and large financial institutions. Details on pricing can be found here as well, and a demo version from this site is available. # http://www.intecc.co.uk/camfit/ 13.3.20 Minitab This site offers extensive product information (including a student versions of their software), customer support (including FAQs, papers on using Minitab in classes, macros, bug fixes, and textbooks that use Minitab). They also have information on workshops and conferences, and a "community" section on numerous on-line statistical resources. There is information on the company as well. # http://www.minitab.com/ 13.3.21 Modeleasy This statistical modeling software is designed for large models (i.e. , those with thousands of linear or nonlinear equations). It also has many estimation and simulation techniques, as well as "extraordinary" graphical output. Information about its features can be found here. # http://www.modeleasy.com/ 13.3.22 Numerical Algorithms Group (NAG) You can find out about the products of this company, famous for its Fortran libraries, here. The also have a Fortran 90 repository. # http://www.nag.co.uk/ 13.3.23 Numerical Recipes "Numerical Recipes" was originally the title of a book that implemented numerical algorithms in different computer languages. They have expanded with a number of books and also offer the algorithms in different electronic forms: both via diskettes and on-line. At this site, they offer information and news on themselves, an on-line store (i.e. you can purchase the routines and books on-line), instructions for their use, free upgrades and bug reports, related information on the Internet, and associated information. # http://nr.harvard.edu/nr/nrhome.html 13.3.24 Ox This matrix programming language for econometrics is written by Jurgen A. Doornik of Oxford University. There are a number of packages and utilities for it for basic and advanced econometric work (panel data, ARIMA, VAR, cointegration, simultaneous equations, etc.). It can also import data in a number of formats. Complete information about the package is available, as is the actual code for a wide variety of platforms. Doornik also writes PcGive, PcFiml, and GivWin, which are described in this section. # http://www.nuff.ox.ac.uk/Users/Doornik/ 13.3.25 Octave "GNU Octave is a high-level language, primarily intended for numerical computations. It provides a convenient command line interface for solving linear and nonlinear problems numerically, and for performing other numerical experiments using a language that is mostly compatible with Matlab." It is freely available software, and is available for most versions of Unix and Windows. Functions are available for most statistical operations. # http://www.che.wisc.edu/octave/ + 13.3.26 O-Matrix (Harmonic Software) + + O-Matrix if a full-featured interactive mathematical package for + Windows machines. Its list of features include matrix operations, + statistics, optimization, calculus, and even wavelets. As one might + guess, it includes extensive plotting capabilities, and one can even + create a graphical interface with it. A free version is available + on-line. O-Matrix is said to be faster than Matlab, and the upcoming + version 5 (now in beta testing) can run both Matlab scripts and + functions. + + # http://www.omatrix.com/ 13.3.27 PcGive, PcFiml, and GiveWin This set of packages is by Jurgen A. Doornik of Oxford University. GiveWin is a "front end" where the commands are given and output is displayed, while PcGive is for single equation modeling, and PcFiml is for multi-equation work (VARs, cointegration, and simultaneous equations). A demo of GiveWin and PcGive are available here, while complete versions are distributed by Timberlake Consultants (the second URL below). # http://www.nuff.ox.ac.uk/Users/Doornik/ # http://www.timberlake.co.uk/ 13.3.28 Qplot for Gnuplot Gnuplot is a commonly used for many plotting duties, but it is difficult to use for quarterly data that is common in macro. This page contains and describes a Perl routine "qplot" that adds this functionality. This page also contains examples of its use. # http://ricardo.ecn.wfu.edu/~cottrell/qplot/ 13.3.29 Quantitative Micro Software This firm sells MicroTSP and its descendent, EViews. Versions are available for Macs, MS-DOS, and Windows platforms. Currently, you can read about their products and obtain support (including updated software). They also offer the DRI Basic Economics Database (formerly Citibase). # http://www.eviews.com/ # General Info and Sales: <sales@eviews.com> # Customer Support: <support@eviews.com> 13.3.30 RATS (Estima) On their web site, you can read the latest news from Estima, the producer of RATS and other related products. You can also read about general information on their products and about frequently asked questions on RATS. Finally, they offer a list of procedures and examples. # http://www.estima.com/ # Other Support: <estima@estima.com> 13.3.31 SAS Besides some information on their statistical products, you can also read about some of their other products and about the company itself. In addition, you can find out about training classes at their sites, find extensive information about support (including communicating with SAS via the web and e-mail) and answers to various common questions, using a searchable database of more than 10,000 SAS Notes. There are also routines and sample datasets from the SAS Sample Library. One can even order their books on-line. # http://www.sas.com/ # Education: <sasedu@vm.sas.com> # Publications: <pubs@unx.sas.com> # Software Sales and Marketing: <software@sas.sas.com> 13.3.32 SHAZAM Besides offering support via e-mail, there are a number of additional services offered over the Internet for SHAZAM. The ftp and gopher sites listed below contain SHAZAM procedures, command files, issues of SHAZAM Network News, and data and programs from an edition of Judge and other sources (not all information is available on both the ftp and gopher sites). The web site offers a wealth of information on SHAZAM itself: some manual chapters (still be modified for this environment), a description of its features, hardware requirements, lists of handbooks and disks, and examples and frequently asked questions. You can even order a copy on-line. In addition, they offer a very interesting service: one can run SHAZAM programs remotely on their system. Via e-mail, a program can be sent to <runshazam@shazam.econ.ubc.ca>. It must start with a SHAZAM comment line (i.e. *), it must contain its own data, and they ask that you don't abuse this offering with large jobs that tie up the machine (they monitor usage). One can also use their web page to run programs. Either allows one to try out SHAZAM, or for old users to try the most recent version. # http://shazam.econ.ubc.ca/ # gopher://137.82.185.2/ 11ftp%3aSCSI%3apub%3aUBCEconGopher%3aSHAZAM%3a # ftp://shazam.econ.ubc.ca/pub # Support: <help@shazam.econ.ubc.ca> # Order Information: <info@shazam.econ.ubc.ca> # Australia: <shazam@bond.edu.au> 13.3.33 SORITEC This package, designed for a number of PC platforms, is said to be very full-featured. At this site you can read about their products, future plans, and how to obtain support. You can also obtain updates of their products. # http://fisisoft.com/ 13.3.34 SPSS At this on-line site, SPSS offers information on their products for the variety of platforms they support, extensive material on their training programs, FAQs on their products, a list of their offices across the world, and information on documentation. They also offer an on-line version of "Keywords," a magazine for their users. Finally, they list a limited number of statistical resources on the Internet. # http://www.spss.com/ 13.3.35 Stata This site offers a wealth of information to existing and potential Stata users. It includes extensive information on their products, and equally extensive user support. The latter includes FAQs, archives of their mailing list (described here in the mailing list section), copies of the Stata Technical Bulletin diskette (not the STB Journal), which includes bug fixes, user written programs, and new features. In a nice innovation, they even offer courses over the Internet. They even offer links to other providers of statistical software. # http://www.stata.com/ + 13.3.36 Statgraphics (Statistical Graphics Corporation) + + This firm's main product is "Statgraphics," a full-featured + statistical package. It includes "exploratory data analysis, + histograms, box-and-whisker plots, one sample analysis, two-sample + comparisons, regression and multiple regression, analysis of + variance, and sample size selection." It can also deal with censored + and uncensored data. As one might expect from its name, Statgraphics + has very strong graphical features. Besides product information, + this site offers a demo version, contact information, and links to + statistical sites. + + # http://www.sgcorp.com/ 13.3.37 STATISTICA This general-purpose statistical program is said to receive quite good reviews. While it does not seem to offer many economic or econometric-specific features, it does offer a large range of statistical procedures, including very extensive graphing, explanatory analysis, and data mining. # http://www.statsoft.com/ 13.3.38 TSP International Currently, this site has extensive information on their products, including details on its capabilities. Pricing and ordering information is available as well. Note: this firm sells TSP; another firm, Quantitative Micro Software, sells MicroTSP 7.0 and EViews. # http://www.tspintl.com/ # Sales Inquiries: <sales@tspintl.com> # Support: Clint Cummins <clint@leland.Stanford.edu> 13.3.39 VORSIM This product is an Excel spreadsheet add-on that can perform a number of useful functions and operations: "time series models with lags, static partial equilibrium economic models, engineering process models, business plan projections," etc. The details here include a sample you can download. # http://members.aol.com/vorecon/vorsim.html 13.3.40 Web Pages that Perform Statistical Calculations! [links to 300 sites] This resource points to more than 300 sites that perform interactive statistical calculations. Besides the obvious of plotting and calculating cumulative values of distributions, it also provides links that offer advice and support on virtually the entire gamut of statistics: choosing the appropriate test, descriptive statistics, random numbers, and innumerable types of tests. It can be used for both teaching and research. # http://members.aol.com/johnp71/javastat.html 13.3.41 Xlisp-Stat According to Hal Varian, a number of statisticians are using this freely available package. Versions are available for Unix (both character based and X Window), Macs, Amiga, and Microsoft Windows. It is quite extensible and flexible, and produces a variety of graphical outputs. For additional information, one might want to look at the author's (Luke Tierney) book: "Lisp Stat : An Object Oriented Environment for Statistical Computing and Dynamic Graphics, 1991, Wiley, ISBN: 0471509167. In addition, an archive for this package is located at UCLA. Information on it is described in the "Software Program Libraries" section. # ftp://umnstat.stat.umn.edu/pub/xlispstat # Information: Luke Tierney <luke@umnstat.stat.umn.edu> 13.3.42 XTREMES This package is used for extreme value analysis. The companion book is "Statistical Analysis of Extreme Values," R.D. Reiss and M. Thomas. At this site, you can learn about the package, download programs, and even download a sample copy of the software. # http://www.xtremes.math.uni-siegen.de/ 13.4.0 Word Processing 13.4.1 Creating Quality Adobe PDF Files from TeX with DVIPS [generating nice PDF with TeX can be tricky] This document describes how to change the fonts in TeX and LaTeX to generate fonts that work well with PDF, a very common document system on the Internet. Some of the default fonts for TeX and LaTeX do not work well with PDF. I understand an easier method on some systems is to use the "times" package (with the "usepackage" command in the header). # http://www.adobe.com/supportservice/custsupport/SOLUTIONS/543e.htm 13.4.2 MT and MTs [make tables for word processors from Stata or SAS output] This set of programs, by Jonah Gelbach, takes Stata (MT) or SAS (MTs) output and generates tables. Specifically, it takes Stata log files, or SAS .lst files, and generates tables in either LaTeX or ASCII (which of course can be imported into any word processor). An advanced version is in the works. # http://nber.org/~gelbach/ 13.4.3 TeX and LaTeX References [where to start with TeX & LaTeX] TeX is a typesetting system that was developed by the computer scientist Donald Knuth of Stanford. To make it easier to use, a very extensive set of TeX macros, known as LaTeX, have been developed. Versions of it are used widely, if not exclusively, for word processing in math and physics. In part, this stems from the ease in which one can type equations. In addition, LaTeX has an interesting philosophy: you design the logical structure of the document, and LaTex handles the physical output. This makes a number of things easier. For instance, if you wish to add a section, you don't have to retype all the other section numbers; LaTeX handles this automatically. Or, if you decide to change the presentation style of equations, you can make the change in one place, rather than equation by equation. For TeX, let me cite two references. The first one is the classic, while the second one contains information on the huge number of macros and ancillary programs for TeX. The TeXbook, Donald Knuth, Addison Wesley, 1984, ISBN 0-201-13447-0, paperback 0-201-13448-9 Making TeX Work, Norman Walsh, O'Reilly and Associates, 1994, ISBN 1-56592-051-1. For LaTex, let me also give two references. The first is the second edition of the classic LaTeX reference. It covers the new version of LaTeX, LaTeX2e. To be honest, I often find its technical appendix to be of more use than the chapters. The second reference is designed as a very detailed companion for the first. LaTeX, a Document Preparation System, 2nd ed., Leslie Lamport, Addison Wesley, 1994, ISBN 0-201-52983-1 The LaTeX Companion, Michel Gossens, Frank Mittelbach, and Alexander Samarin, Addison-Wesley, 1994, ISBN 0-201-54199-8. Finally, the following URL is for the "TeX Users Group" (TUG), which offers a wealth of information on TeX and LaTeX. # http://www.tug.org/ 13.4.4 TeX Macros for Economics and TeX/LaTeX Sources [generate TeX in styles for different journals] Since I am not a TeX user, let me defer to George Greenwade <bed_ gdg@SHSU.edu>, who is. In fact, he is an expert. This section was written by George and I simply copied, with a bit of editing, from his posting to the Usenet newsgroup sci.econ.research as archived by Forrest Smith. The TeX macros written by Hal Varian, known as "VerTeX" (for Visualize Economic Reports in TeX; release 1.0 of August, 1987) are available for ftp retrieval from this site: Also, the command: "SENDME VERTEX" in the body of a mail message to FILESERV@SHSU.edu will retrieve the set of 19 files via e-mail. I have to stress that these are NOT LaTeX styles; they are TeX macros. VerTeX's syntax differs somewhat from the more standard LaTeX-type commands; however, the syntax used in VerTeX is consistent throughout VerTeX (and, as an occasional user, I feel comfortable in saying they are relatively easy to follow, understand, and use). The file set is pretty well documented and demonstrated. Varian has very roughly hinted that he might have an interest at some later date in rewriting these to use LaTeX and BibTeX (probably after the release of LaTeX3 -- since I am quite involved in that project, I feel safe in telling you not to hold your breath on LaTeX3; I'll be surprised if it's out before 1996). The present Visualize Economic Reports in TeX styles include: # jpe.sty --- Journal of Polemical Economy # jep.sty --- Journal of Economic Perspectives # jet.sty --- Journal of Economic Theorems # aer.sty --- Armenian Economic Review # ecnmet.sty --- Economagica # restud.sty --- Review for Economic Students # qje.sty --- Quartered Journal of Economics I'll assume that you can figure out which of these look like what "real" journals. When you use one of these styles, VerTeX will automatically adjust the style of the document and the style of the references to be more-or-less consistent with the journal style. Some fine tuning may be needed, but the output generally looks pretty good. As the US coordinator of the CTAN (a collection now in excess of a gigabyte), if you have any TeX-related files which you would like to have included, please contact me. # ftp://ftp.TeX.ac.UK/ctan/tex-archive/macros/plain/contrib/vertex/ 13.4.5 T3, Scientific Word and WorkPlace (TCI Software) [commercial TeX and Maple products] This company has three products: T3, Scientific Word, which generates LaTeX, and Scientific WorkPlace 2.0, which integrates Scientific Word with the Maple symbolic computation system. At this site you can read about this company and their products, and order and obtain support (including program updates). # http://www.mackichan.com 13.4.6 Using Xdvi for Presentations [generate presentations with freely available software] This page, by Allin Cottrell of Wake Forrest University, describes how one can use TeX or LaTeX and xdvi to create computer presentations. The results offer roughly the same functionality as PowerPoint: incremental display of material, embedded graphics, and even movies. # http://ricardo.ecn.wfu.edu/~cottrell/xdvi/