T. de Boer
- Kaarten in de Cloud: een inventarisatie van kaart-collecties op basis van Google Maps
- Translated title
- Maps in the Cloud: an inventory of map collections on the base of Google Maps
- Book title
- Cartografie: visie op de kaart
- Pages (from-to)
- Number of pages
- 's-Gravenhage: Stichting Archiefpublicaties
- Jaarboek Stichting Archiefpublicaties
- Volume (Serie)
- Document type
- Faculty of Science (FNWI)
- Institute for Biodiversity and Ecosystem Dynamics (IBED)
The collections of four major Amsterdam map collections (the Special Collections of the University of Amsterdam, the Library of the Free University of Amsterdam, Amsterdam City Archives and the Library of the Royal Tropical Institute (KIT), Amsterdam) have been made visually accessible beginning with the map series in a pilot project. The maps are not only inventoried in the traditional way via text information, but also according to their locations on Google Maps. This not only provides Internet access to highly detailed maps from all over the world, but also provides the ability to overlay other information about the map via mashups. In a first pilot, a selection of maps whose positions are precisely determined based on the coordinates on the map sheets was made from a number of systematic map collections of the nineteenth and twentieth centuries. These maps are usually so exact that they can be projected on Google Maps precisely. The biggest problem is not the technology, but the incorporation of geographic datasets in major Content Management Systems (CMS) which are not designed to work with geographic data. Therefore, the application was developed in the Cloud environment of the Computing Centre SURFsara. In this first pilot, only the outer borders of all the sheets of the map series were included in the application. Since the used map sheets were provided with the coordinates of their vertices (corner edge points) and also border each other, only the coordinates of the first sheet had to be typed in. All the following sheets can be added by indicating to which side of the previous sheet they are situated (left, right, bottom, top). The result is a grid of rectangles on Google Maps. A click on a rectangle in the map window provides the text description of the map, which includes the reference to the official UvA-HvA catalogue. This is called a permalink, which is guaranteed to remain, even if the physical location of the map file would change. The map is directly available as a WMS (Web Mapping Service) and, as such, is not only approachable as images from other sites and computer applications, but is also available as a digital map ready for possible integration with own maps via overlays. The site of this application can be found via the URL http://mapserver.science.uva.nl/bladwijzers/uva/index.html. In the second pilot, individually geo-referenced scanned map sheets were also included. As an example, all scans of the entire 1:50,000 Soil Map of the Netherlands were incorporated in the application. The georeferenced scans are also included as ArcGIS Server services in the Geoportal of the University of Amsterdam and provided with metadata. Metadata for the maps and Web services in the UvA Geoportal can be implemented with the help of ArcMap and ArcCatalog or on the INSPIRE website http://inspire-geoportal.ec.europa.eu/editor/. The ArcGIS Server service of the Soil Map is found in the Browse tab of the UvA Geoportal, through the URL http://geodata.science.uva.nl:8080/geoportal/catalog/main/home.page. Eventually, the wealth of the cartographic world heritage will best be disclosed in a content management system (CMS) based on both advanced catalogue systems that work with text and keywords as well as those based on geographically oriented search systems.
Karten in der Cloud: eine Inventarisierung von Kartenbestände auf der Basis von Google Maps. Der Kartenbestand (vorerst die Kartenserien) von vier großen Sammlungen in Amsterdam (Sondersammlung der Universität von Amsterdam, Bibliothek der Freien Universität Amsterdam, Stadtarchiv Amsterdam und die Bibliothek des Königlichen Tropeninstituts (KIT) Amsterdam) wurden in einem Pilotprojekt digital erschlossen und online zugänglich gemacht. Die Karten sind nicht nur in der traditionellen Weise bezüglich der Textinformationen inventarisiert, sondern auch entsprechend ihrer geographischen Koordinaten auf Google Maps lokalisiert. Dies bietet Zugang zu sehr detaillierten Karten der ganzen Welt mit Hilfe eines Internet-Browsers, und es ermöglicht zusätzlich auch über ‘Mashups’ weitere Informationen zur Karte zu gewinnen oder mit anderen Karten zu kombinieren.
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