Proxy4OWS

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Proxy4OWS

  1. 1. Introduction Proxy4OWS Links Outlook Summary Proxy4OWS a ˇ J´chym Cepick´1 y1 Help Service - Remote Sensing http://bnhelp.cz jachym@bnhelp.cz FOSS4G-CEE, 2012 Jachym Cepicky Proxy4OWS
  2. 2. Introduction Proxy4OWS Links Outlook SummaryOutline 1 Introduction 2 Proxy4OWS WCS WFS WMS 3 Outlook Jachym Cepicky Proxy4OWS
  3. 3. Introduction Proxy4OWS Links Outlook SummaryAbout Visualize and work with large vector data and raster data in the web environment OGC WFS, WCS (WMS) → WMS Jachym Cepicky Proxy4OWS
  4. 4. Introduction Proxy4OWS Links Outlook SummaryThe problem of displaying large GIS datasetsThe problem Google limit up to 1000 vector features Problem displaying large vector data (cadaster) GeoTIFF - not supported by browsers Unspported coordinate reference systems Jachym Cepicky Proxy4OWS
  5. 5. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryProxy4OWS Transforms WCS, WFS (and WMS) to OGC WMS Client deals with raster images There is still possibility to access original service type (e.g. WFS → WFS) There is possibility to access original service URL Jachym Cepicky Proxy4OWS
  6. 6. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryGetCapabilities Standard GetCapabilities request with two additional parameters 1 owsService=URL url to desired service 2 owsType=SERVICE TYPE like WFS, WCS or WMS Server creates temporary cache directory for particular service, starts to generate mapfile. Jachym Cepicky Proxy4OWS
  7. 7. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryOutline 1 Introduction 2 Proxy4OWS WCS WFS WMS 3 Outlook Jachym Cepicky Proxy4OWS
  8. 8. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryWeb Coverage ServiceWCS OGC WCS layers are configured using GDAL WCS format http://gdal.org/frmt_wcs.html No caching is provided Jachym Cepicky Proxy4OWS
  9. 9. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryOutline 1 Introduction 2 Proxy4OWS WCS WFS WMS 3 Outlook Jachym Cepicky Proxy4OWS
  10. 10. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryWeb Feature ServiceWFS WFS was implemented natively using OWSLib http://sourceforge.net/apps/trac/owslib/wiki Axis order and filter parameter support in MapServer or OGR Simple caching is provided (for BBOX, not for FILTER) Data are downloaded (with OWSLib) localy and MapServer LAYER is configured with this local file Jachym Cepicky Proxy4OWS
  11. 11. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryWeb Feature ServiceWFS WFS was implemented natively using OWSLib http://sourceforge.net/apps/trac/owslib/wiki Axis order and filter parameter support in MapServer or OGR Simple caching is provided (for BBOX, not for FILTER) Data are downloaded (with OWSLib) localy and MapServer LAYER is configured with this local file Jachym Cepicky Proxy4OWS
  12. 12. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryOutline 1 Introduction 2 Proxy4OWS WCS WFS WMS 3 Outlook Jachym Cepicky Proxy4OWS
  13. 13. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryWeb Map ServiceWMS Used for unsupported CRSs No caching Data are disturbed, but visible Jachym Cepicky Proxy4OWS
  14. 14. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryProxy4OWS Schema Jachym Cepicky Proxy4OWS
  15. 15. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryCapabilities Schema Jachym Cepicky Proxy4OWS
  16. 16. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryExamples WFS http://briseide.ccss.cz/map/ with http://bnhelp.cz/ows/crwfs WFS service WMS http://habitats.cz/view with http://bnhelp.cz/ows/crtopo WMS service (layer Sidla in WGS 84) Client http://hslayers.org HSLayers.Layer.WCS, HSLayers.Layer.WMS, HSLayers.Layer.WMSWarped Jachym Cepicky Proxy4OWS
  17. 17. Introduction Proxy4OWS WCS Links WFS Outlook WMS SummaryExamples Jachym Cepicky Proxy4OWS
  18. 18. Introduction Proxy4OWS Links Outlook SummaryLinks http://proxy4ows.org http://redmine.ccss.cz/projects/hslayers git://git.ccss.cz/hsrs/owsproxy.git Jachym Cepicky Proxy4OWS
  19. 19. Introduction Proxy4OWS Links Outlook SummaryRobustnessSLDCaching Jachym Cepicky Proxy4OWS
  20. 20. Introduction Proxy4OWS Links Outlook SummarySummary Proxy4OWS python-based server-side OGC OWS proxy. Transforms OGC OWS services to OGC WMS. Jachym Cepicky Proxy4OWS
  21. 21. Introduction Proxy4OWS Links Outlook Summary Questions?Jachym Cepicky Proxy4OWS

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