imagemap


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imagemap

A single graphic image on a Web page that is divided into different areas, each of which provides a link to another Web page. Imagemaps are used for navigation bars at the top of Web pages as well as a way to divide any topic into subtopics. It is often used for geographic maps, enabling the user to click on a state to obtain demographics, store locations or other information pertaining to the area.

Server or Client Processing
Within each element, a rectangular area is predefined as the "hotspot." When the imagemap is clicked, the coordinates of the pointer, relative to these hotspots, may be sent to the server for processing, or HTML code within the Web page may process the click. See navigation bar.


An Image Map
Imagemaps are abundant on the Web, especially during elections. When a state was clicked on this electoral map from The New York Times online, the margin of victory in the last seven presidential elections was displayed.
References in periodicals archive ?
The advantage of the icon imagemap technique is that we do not need to fuse multi-source geospatial data, while still getting the fused visual effect.
Currently there are no existing commercialized modules for icon imagemap creation, and it is difficult and complicated to implement the icon imagemap visualization in generic raster GIS when the number of variables is large.
Automating the icon imagemap visualization procedure;
Providing users with a tool to conveniently check the icon imagemap visualization effect in a roving window;
Enabling users to select the parameters for icon imagemap (such as dynamic or static icons) and applying icon imagemap making to the entire data layer or just a subset (e.
Part of the interface is the icon lens which enables a user to view a small icon imagemap in a roving window (Figure 3).
Figure 4 shows the interface of the module called icon imagemap maker which allows the user to specify icon element data layers, icon templates, and some settings used in creating an icon imagemap.
Icon imagemap creation based of the specification of spatial data layers and choice of static or dynamic icon designs;
The IconMapper system thus largely implements the icon imagemap technique and provides a user-friendly interface to generate and visualize icon imagemaps.
In order to evaluate the utility of the icon imagemap technique for the visualization of geospatial data, a simplified model--Terrain Traversability Model (TTM)--was created based on the icon imagemap visualization approach.
The effectiveness of the icon imagemap will depend oil the design of the variable symbols, the data, and their colorization (Pazner and Lafreniere 1997).