LARGE FORMAT MAPS ON THE INTERNET

Sverre Iversen

Geological Survey of Norway

sverre.iversen@ngu.no

Large format maps on the Internet

Sverre Iversen, Geological Survey of Norway

Abstract

Production of maps in large format directly from the Internet can be useful for several areas of application, such as printed maps or supporting map information in offline applications. The WMS standard has simplified the availability on online maps. However, WMS servers usually have a limitation in image size for the GetMap response. To enable large formats, the initial requests have to be split into several and smaller requests that comprise the whole area. Client-based techniques in the assembling process are described. The quality of such maps can in some cases be limited, but the products resulting from these techniques can still be sufficient for a wide range of use.