Geoclip - web-mapping - thematic maps




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Features > A wealth of information
Dynamic maps connected to custom databases

A complete Geoclip application is comprised of three elements :
the "interface" component, which enables the user to handle the map using the tool palette,
the "geography" component, i.e. the base maps and map coordinate files,
the "statistics" component, i.e. the statistical data linked to the geographic units.

Depending on application needs, three types of structure are possible :

The interface, geographic data, and statistical data are all grouped in a single, independent Flash application.

This is what the Geoclip builder creates. You can download it for free on this site
(see Build your Geoclip).

Geoclip can run as an entirely independent application, and can therefore run locally, off-line on your machine or from a CD-ROM, for example.

The size of the Flash files created grows with the amount of data.

The interface and geographic data are placed in the Flash file, while the statistical data are read from an external database.

The data are structured as databases – MySQL, Access, SQL Server formats, and so on. The Flash application communicates with these databases through SQL queries in PHP, ASP, JSP and other scripts. As needed, it sends queries to the database, processes the result and displays it on the map.

There is no limit for the amount of data processed other than that existing in the database.
Geoclip is capable of adapting to an existing database environment.
To update the application, you need only update the data in the database.

This version is not compatible with a CD-ROM release, unless a database management application is also installed.

The Flash file only includes the interface, while the geographic and statistical data are read from an external interface.

This version runs in a similar fashion as the one above.

Maximum flexibility: base maps and statistical data are retrieved on demand and transmitted in a binary, compressed format, by far the most compact format available.

If you want to offer a limited number of geographic views, we recommend you store them separately. After a visitor views a base map for the first time, it will be stored in the browser cache and will be instantly retrieved at the next visit.

Where do the base maps come from ?
These base maps are used by geographic information system software – MapInfo, Arcview, Geoconcept, and so on. They are distributed under licence by the concerned software editors and by the French national geography institute (IGN). The licences usually apply both to use and to redistribution.

Where do the statistical data come from ?
In the examples shown, the statistical data come from the French Insee statistics institute, which releases some of these for free on its website but charges for the use and redistribution of other data. These demographic data – taken from population censuses – are often used as scaling data.