Intellectually interesting...

AGENT - Automated Generalization New Technology

Geometry and Programming Resources

NIST Guide to Available Mathematical Software GAMS.

(nee) Bell Labs netlib.

COMP.GRAPHICS.ALGORITHMS FAQ has excellent 2 & 3D algorithms

Computational Geometry Algorithms Library (CGAL) is a collaborative project to develop a robust, easy to use, and efficient C++ software library of geometric data structures and algorithms.

Geometry Visualization Center

Java Resources

Some pieces and ideas; swarming geographical analysis machine

Pilot a helicopter around the world's terrain.

Virtual Globe

platform independent mapping tool

3d GIS applet

Java & GIS

Java and GIS

GIS/Java resource listing:

K-Tech home page w/ java, gis, cart. etc.

Java-based examples of GIS functions (Brian Klinkenberg)

PostScript Resources

Thanks to Brad for some PostScript web resources: and a downloadable book by the guy who wrote the "green" PostScript book.

Other Resources (and some commercials)

Sol Katz's software (look among the 488 urls) at USGS

For NAD 27 and NAD83 coordinate conversion, Mark Cederholm suggested the following for code (in FORTRAN): http: NOAA or ftp: NADCON.

Mostly Commercials...

Look at for info on how to include maps into any windows program look at JEB_Maps data CDs and OCX. They claim to be an easy and inexpensive way to incorporate maps into your Windows program. contains digital map data and deomnstration program.

HyperLens. Visitors interested in trying the labels, etc should open a new ObjectLens[1] (from the Edit menu) on any of the sample images at

SpatialX, is ObjectFXs Java Developer toolkit. It is built entirely in Java, utilizing all the object-oriented capabilities of the Java Language. We have developed our software to display your data in highly intuitive maps, floorplans and diagrams. Available as Java beans and Components, the SpatialX toolkit comes with everything a developer needs including reference , sample applets and applications with full code. Also included is our ObjectMapper utility which enables you to create and manage spatial data with your existing databases. See

JMAPPER  SDK is the new Java AM/FM/GIS Libraries developed by JMAPPER Inc. JMAPPER SDK allows you to handle large raster anD vector maps in an easy and effective way. It handles multiple layers and multiple concurrent users. It does have components to import/export from popular GIS/CAD formats such as AutoCad or ARC/INFO. If you need a Java GIS Library, JMAPPER SDK it's the way to go. JMAPPER, Your Maps Anywhere ... For further information, please contact : JMAPPER Fax (613) 591-9594 CLESSIDRA@OTTAWA.COM

Java developers kit for GIS? Look for

Also give ILOG JViews a look. Article 17920 of Path: news.Hawaii.Edu!!!!uwvax!!billh From: (Bill Hibbard) Newsgroups:, Subject: VisAD for Java-based visualization Date: 21 Jun 1999 18:27:49 GMT Organization: University of WI, Madison -- Computer Sciences Dept. Lines: 35 Message-ID: <7km075$> NNTP-Posting-Host: Xref: news.Hawaii.Edu VisAD is a Java class library for interactive and collaborative visualization and analysis of numerical data. VisAD uses the features of Java 2, including Java3D and Java2D for visualization, Java RMI for distributed objects, and JNI for links to legacy algorithms (VisAD's analysis and visualization code is pure Java, but it does support JNI connections to users' legacy code in other languages). VisAD is freely available from: including source code, documentation and numerous application examples from Earth science, astronomy and other disciplines. Many of these applications allow users at different workstations to collaborate as if sitting in front of the same workstation. The free distribution includes the VisAD Spread Sheet which provides access to many of VisAD's features without the need to write any applications code. It can access data in netCDF, FITS, HDF-EOS, McIDAS, Vis5D, GIF and JPEG files. It can create interactive displays of these data using either Java3D or Java2D, and supports simple computatons combining multiple files. If you have questions you can get help from the VisAD mailing list. Join by sending a message to with subscribe visad-list as the first line of the message body (not the subject line). Bill Hibbard Article 70299 of comp.infosystems.gis: Path:!!!!!!!!!!not-for-mail From: "Uffe Kousgaard" Newsgroups: comp.infosystems.gis References: <8ubl2f$csc$> Subject: Re: Calculation of a Polygon's Area Lines: 24 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.00.2314.1300 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 Message-ID: Date: Wed, 8 Nov 2000 15:24:10 +0100 NNTP-Posting-Host: X-Complaints-To: X-Trace: 973693457 (Wed, 08 Nov 2000 15:24:17 MET) NNTP-Posting-Date: Wed, 08 Nov 2000 15:24:17 MET Organization: UNI2 Internet Kunde Xref: comp.infosystems.gis:70299 No C implementation, but the formula's are pretty easy to implement. Uffe Kousgaard Wouter Scherphof wrote in message news:8ubl2f$csc$ > Hi all, > A mathematical issue here. > I'm looking for an ANSI C library that is able to calculate the area of a > polygon. > A polygon may be defined by an array of coordinate pairs that are connected > with straight lines from point to point. > Anyone seen something? > Regards, Wouter. > >