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Visualisation: Geography

Visualisation: Geography. Dr Andy Evans. Geographical data KML Free mapping services GeoTools Cartograms. Geographical data. Keyhole Markup Language (KML) http://www.opengeospatial.org/standards/kml/ https://developers.google.com/kml/documentation/. Google.

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Visualisation: Geography

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  1. Visualisation: Geography Dr Andy Evans

  2. Geographical data KML Free mapping services GeoTools Cartograms

  3. Geographical data Keyhole Markup Language (KML) http://www.opengeospatial.org/standards/kml/ https://developers.google.com/kml/documentation/

  4. Google KML can be combined with GoogleMaps. Can be used to overlay information on GoogleEarth. Test suite: https://kml-samples.googlecode.com/svn/trunk/interactive/index.html GoogleMaps can also pull in GeoRSS streams.

  5. KML OGS specification. At simplest, a little like the XML we looked at last lecture: <?xml version="1.0" encoding="UTF-8"?> <kmlxmlns="http://www.opengis.net/kml/2.2"> <Document> <Placemark> <Polygon> <outerBoundaryIs> <LinearRing> <coordinates> 10,10,1 10,20,1 20,20,1 20,10,1 10,10,1 </coordinates> </LinearRing> </outerBoundaryIs> </Polygon> </Placemark> </Document> </kml>

  6. Other free mapping services PhiloGL http://www.senchalabs.org/philogl/ Google WebGL Globe http://www.chromeexperiments.com/globe

  7. Geographical data GeoTools (Leeds et al.): http://geotools.org/

  8. Features Mapping Includes simple Swing components for showing maps. GML/XML conversion Web service setup Interaction with databases Shapefile read and write Graph and Network tools Spatial queries

  9. Data formats Raster formats and data access: arcsde, arcgrid, geotiff, grassraster, gtopo30, image (JPEG, TIFF, GIF, PNG), imageio-ext-gdal, imagemoasaic, imagepyramid, JP2K, matlab Database jdbc support: db2, h2, mysql, oracle, postgis, spatialite, sqlserver Vector formats and data access: app-schema, arcsde, csv, dxf, edigeo, excel, geojson, org, property, shapefile, wfs XML Bindings: Java data structures and bindings provided for the following: xsd-core (xml simple types), fes, filter, gml2, gml3, kml, ows, sld, wcs, wfs, wms, wps, vpf. Additional Geometry, Filter and Style parser/encoders available for DOM and SAX applications.

  10. Example FileDataStore store = FileDataStoreFinder.getDataStore(file); SimpleFeatureSource featureSource = store.getFeatureSource(); MapContent map = new MapContent(); map.setTitle("Quickstart"); Style style = SLD.createSimpleStyle(featureSource.getSchema()); Layer layer = new FeatureLayer(featureSource, style); map.addLayer(layer); JMapFrame.showMap(map);

  11. GML http://docs.geotools.org/latest/userguide/library/xml/geometry.html http://docs.geotools.org/latest/userguide/library/xml/faq.html See org.geotools.gml in docs Also parses/produces KML.

  12. Cartograms WorldMapper (Sheffield Geography): http://www.worldmapper.org/about.html Cartogram Geoprocessing Tool (Tom Gross): http://arcscripts.esri.com/details.asp?dbid=15638

  13. Cartograms ScapeToad (Java: Chôros Laboratory)http://scapetoad.choros.ch/ Takes in shapefiles; exports shapefiles or SVG. You can download the src here: http://sourceforge.net/projects/scapetoad/files/scapetoad/ScapeToad%201.1/ Nothing to stop you using it in other GNU General Public License, version 2, code.

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