This page offers you an overview of several practical applications of our products and some of our other projects.

USA base map data  ( NEW ! )

Our latest project, which is currently in Beta-release is a base map of the Conterminous U.S.  Combining all the best available public domain sources, this provides coverage of the entire US down to the street level !

This dataset has been compiled from US Census bureau TIGER data to provide street level vector coverage.

Additionaly, a digital terrain model (3 arcsec) has been derived from USGS NED to provide a consistent topographic background.

At higher scales, as you zoom out to view the entire US, data layers from our standard worldmap have been included, which are derived mostly from public domain data sets provided by NIMA such as VMap0 and WVS+

For 250 Euro, you can order this entire dataset on DVD as a complete map compilation ready for use with Demis WMS for your US based web mapping applications

Those purchasing the USA dataset while it is still in Beta status, will get a second DVD copy free of charge providing the final compilation when this is completed.

(Go to USA basemap demo)


USA base map - Golden Gate park, San Fransisco

ReefBase GIS

ReefBase is the world's premier online information system on coral reefs, and provides information services to coral reef professionals involved in management, research, monitoring, conservation and education.

Working as in-house consultants at the World Fish Center, we have developed an online GIS application providing various kinds of maps related to worldwide coral reef monitoring. We have provided various data processing, web programming and on-the-job training services to the ReefBase team, and will continue to support them during future developments.

The online GIS provides a great example of the kind of applications you could build using the Demis Web Map Server.

You can go to the main ReefBase website at or jump directly to the online GIS at

Update: ReefBase GIS has been awarded winner in the "miscellanious" category of the 2004 Web Mapping Contest !

Go to ReefBase GIS

NASA Cities collection

Welcome to the Cities Collection of images. This collection hosts the best views of cities around the globe as photographed by astronauts while in orbit. This collection is based on the complete collection of astronaut photography hosted at the Gateway to Astronaut Photography of Earth .

Using a standard Flash client script provided by Demis, the Johnson Space Center is using DemisWMS to host a map based search of the Cities collection, a collection of astronaut photography taken from the International Space Station (ISS) and several Space Shuttle flights.

As one of the major contributors to the ReefBase project, JSC staff discovered our product and was impressed by the ReefBas GIS and decided to set up this pilot application as a proof of concept.

We hope to see this approach being used for the other image collections they are hosting as well...

Recommended Citation (MLA-Style):
Earth Sciences and Image Analysis, NASA-Johnson Space Center. 27 Sep. 2004. "Cities Collection." <> (3 Nov. 2004).
Send questions or comments to the NASA Responsible Official at
Curator: Earth Sciences Web Team
Notices: Web Accessibility and Policy Notices
Last Update: 27 Sep. 2004
Design, data management and hosting maintained by Lockheed Martin Space Operations at the NASA Johnson Space Cente

Flash support

One of the most interesting new features of the WMS 4.0 version is support for Macromedia Flash bitmap output. We have developed a sample Flash client "script" for you to demonstrate this.

The Flash image support will provide Flash developers with "lossless" image compression using Flash native file format. This eliminates the need to use JPEG format from Flash (JPEG causes fuzzy images due to its lossy compression algorithm).

The source code for the Flash client (.fla) file will be provided to registered users of our product to get them started quickly.

Clicking on the image on the right will open the Flash client in a new window, but you could also embed it in existing pages, like we did on the Product page.

Try this example of a Flash based client

Dataloy Distance Table

Dataloy Distance Table (DDT) has been developed over a period of 25 years. When we started, the purpose was to power up our Voyage Calculation System. However - soon it appeared that the application had great value as a standalone service.

A nice example of a Flash based application, which was developed by Dataloy with some support by Demis.

You can enter several (partial) port names here, then hit the calculate button to plan your world voyage by sea.

This application is not for navigational purpose, the main objective is estimating distances for cost calculations etc...

Dataloy Distance Table

Blue Marble Image by NASA

This spectacular “blue marble” image is the most detailed true-color image of the entire Earth to date. Using a collection of satellite-based observations, scientists and visualizers stitched together months of observations of the land surface, oceans, sea ice and clouds into a seamless, true-color mosaic of every square kilometer (.386 square mile) of our planet. These images are freely available to educators, scientists, museums, and the public.

This is another example of the Flash example client, used to demonstrate our strong server side support for image layers using ECW compression.

If you have huge satellite or aerial imagery, you can rely on the proven technology of Enhanced Wavelet Compression which is incorporated into our server using the rendering engine provided by ER-Mapper.

(Go to NASA Blue Marble pages)


NASA Blue marble image

Changing management of the Haringvliet Sluices

In 1970, the Haringvliet estuary (SW Netherlands) was cut off from the North Sea. This was part of a large plan to safeguard the densely populated delta of the Rhine, Meuse and Scheldt against flooding. Besides safety the plans aimed at a more controllable water system and a better supply of fresh water. In the Haringvliet and the Biesbosch this caused severe ecological damage. In the near future the Dutch government wants to set the Haringvliet sluices ajar and in the long term the sluices should be opened further step-by-step. It is expected that these measures will cause the estuarine ecosystem to recover.

For the Dutch Ministry of Public Works we have compiled the Haringvliet sluices project website from various sources of information to be presented to the general public. This site includes an interactive mapping facility to browse through available GIS data sets.

You can go to the main Haringvliet sluices website at or jump directly to the online GIS at

Go to Haringvliet GIS application - Fleetrack

Welcome to Fleetrack, the Internet system for keeping watch over the "big picture" of your fleet. This is a sample of what a Fleetrack site looks like

Fleetrack was the first tracking application built using our server where we provided some consultancy assisting its developers. It is a subscriber service where a fleet of vessels can be tracked by satellite over the Internet.

After starting out as a DHTML based application, the Fleetrack developers started using Macromedia Flash for their development and managed to persuade us to build in support for the Flash bitmap format.

For a demonstration, click on the image, or go to

Go to Fleetrack demonstration

Classic World Map demo

This is our classic World Map demo that we have been running for a few years now. We leave it here for reference, while we are working on new sample scripts.

This demo gets about 500 to a 1000 visitors a day and has been running like this for nearly three years, so we just preserved it and released our newer samples elsewhere.

We may at some point decide to replace the "classic" demo with a revised script using newer OpenGIS protocols and supporting the latest browsers.




Try the classic DHTML based World Map demo

QuickWMS library

JavaScript classes for creating Web Map clients and interfacing WMS servers according to OpenGIS Web Mapping Specification (versions 0.7 to 1.1). The goal of this project is to enable the fast creation of web mapping clients using JavaScript. The target browsers are Internet Explorer (version 5.5 and up) and Netscape/Mozilla (7.00 and up) both for Windows, Mac and Linux.

A great effort by Pedro Pereira Gonçalves to develop an opensource JavaScript library for developing WMS clients.

This effectively allows you to "drop" a typical WMS client in the middle of any web page with just a few JavaScript statements.

For more information, downloads and documentation, please go to the QuickWMS web site, where our server is one of the WMS servers used in the demonstrations.


QuickWMS website

Intergraph WMS viewer

Intergraph’s Open GIS Consortium (OGC) Web Map Server (WMS) Viewer 2.0 is a thin client that enables the user to view one or more OGC WMS sites. The WMS Viewer sends requests, formatted according to OGC specifications, to selected WMS sites. Data from various sources and formats can be combined and overlaid in one map view, which can be saved as a context document and used again by its creator or another user.

A Popular WMS cascading client developed by Intergraph, uses our world map grid layers as the default backdrop for some vector layers provided by their own WMS server.

Intergraph is using multiple servers to demonstrate the kind of interoperability the WMS protocol provides, and we are confident our good performance and support for gridded data played an important role in their selection of default layers to show.

Courtesy of Intergraph, you can download the ASP source code for this feature-rich cascading client "portal" application.

Ionicsoft Gazetteer demo

Build a map around a specified place. Enter a place name, select it in the list of results and get a map with your selected place and its surrounding area.

Ionicsoft is a well-known player in the OpenGIS arena, using Java as their development platform they offer various OpenGIS compliant products, and are an official member of the consortium.

The Gazetteer is a simple named place search and map demo which Ionic Software is providing on their website using our popular "WorldMap" WMS server to provide the backdrop.

Ionicsoft Gazetteer demo

MapInfo 7.5 WMS interface

MapInfo Professional v7.5 adds supports for Open GIS WMS Service. Customers can now access any Open GIS WMS Server (from any vendor) and add the data as a layer in MapInfo Professional. The Open GIS servers often use different technologies in different locations over the intranet or Internet. MapInfo Professional comes with many of them pre-loaded as examples with a simple user interface to add additional server locations as needed.

A WMS client does not necessarily run in a web browser.

MapInfo 7.5 is an example of a popular desktop GIS which can now be used to connect to any WMS server, including ours.

The Demis WMS World Map Server is included in the list of public WMS servers in the MapInfo system, and because of its good performance we have spotted MI representatives using our server for a demonstration.

MapInfo as a WMS client

Online Bicycle Route Planner

The Online Route Planner has been developed during an internship at Demis. This is the first interactive Bicycle Route Planner in Holland.

By inserting a start and end destination and some route characteristics, the planner calculates routes based on a network instead of using fixed routes.

The detailed network is schematized with the use of Netter. To place the Route Planner on the World Wide Web, the Demis Web Map Server is used together with an added Plug-in for calculation of the routes.

You can test this route planner for yourself at

Try ou Bycicle route planner (in Dutch)

PC Ring

PC Ring is a probabilistic model with which the flood possibilities can be calculated of the various dike ring areas in Holland.

We have developed the Graphical User interface for PC Ring, which enables the user to define the input for the model and to analyze the output. The model incorporates an interactive map which allows for selection of dikes and property editing.

PC Ring is an example of the type of applications you could build using our Active Map.

You can see more details on PC Ring here.



Click for a larger image

Spatial Planning Model

To study the spatial development in Java (Indonesia), a spatial planning model has been developed for the whole island of Java .

The model predicts land use changes and future population distribution. This enables explicit links with the water demand analysis, emissions and flood control aspects forming part of the river basin analysis.

This model has been re-activated and provided with a convenient user interface and a database. This model allows making “what if” analyses for the future spatial configuration of the region. The results of the model are presented on thematic maps.

The Spatial planning model is an interesting example of how one can use the Active Map to present data on maps in applications.



The Demis iMove transportation model was developed for multi modal travel choice modeling at a strategic level.

With iMove transport of both people and freight can be modeled over roads, railways and waterways. A separate module is available to estimate the effects in terms of road safety, noise and air pollution.

iMove was developed by Demis in co-operation with the Technical University of Delft for the Dutch Ministry of Public Works, regional directorate South Holland

iMove is an example how you can use Netter to schematize networks. More information on iMove can be found here.

For more information about Demis send an e-mail to :