Integrating Geospatial Data to your Applications
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This document discusses integrating geospatial data into applications. It covers spatial data formats like raster, vector, and coordinate reference systems. It also discusses sources of free geospatial data and tools for working with spatial data like QGIS, GDAL, OGR and PostGIS. Finally, it discusses developing spatial web applications using frameworks like Leaflet, OpenLayers, GeoServer and GeoDjango along with processing and visualization libraries. A list of additional resources for geographic data, spatial databases, web mapping and spatial frameworks is also provided.
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Integrating Geospatial Data to your Applications
- 1. Integrating Geospatial Data to your Applications November 14, 2015 by Ian Panganiban
- 2. Hi I'm Ian SRS II Project PhilSHORE Geodetic Engineer Hackathons lkpanganiban @lkpanganiban Ian Panganiban
- 3. Motivation
- 4. Agenda Spatial 101 Data sources Spatial app development Beyond spatial
- 5. Spatial 101
- 6. Pixelated much? Raster data “a raster graphics image is a dot matrix data structure representing a generally rectangular grid of pixels” GeoEye Satellite Imagery
- 7. Story of points, lines and polygons Vector data “Vector is a representation of the world using points, lines, and polygons. Vector models are useful for storing data that has discrete boundaries, such as country borders, land parcels, and streets.” Java OSM Editor
- 8. Vector formats Java OSM Editor Geojson GPX Shapefiles
- 9. Coordinate Reference Systems “Every dataset has a coordinate system, which is used to integrate it with other geographic datasets within a common coordinate framework. Allows you to perform various integrated analytical operations, such as overlaying data layers from disparate sources and coordinate systems.”
- 10. EPSG what? “EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations”
- 11. Munging spatial data using GIS QGIS in Action: Soil data of Isabela
- 12. Some free data :) BSWM Maps philgis.org USGS - earthexplorerOSM data via QGIS plugin
- 13. Let's build some apps
- 14. A very spatial app Frontend Application Frameworks Databases
- 15. A spatial baggage counter Spatial databases “A spatial database, or geodatabase is a database that is optimized to store and query data that represents objects defined in a geometric space. Most spatial databases allow representing simple geometric objects such as points, lines and polygons.” Spatialite
- 16. A look into PostGIS extensions Over 1000 functions http://workshops.boundlessgeo.com/postgis-intro/
- 18. Spatial libraries “Spatial libraries allow you to read and write spatial data. These libraries have spatial processes like buffer, intersect and transform.”
- 19. Using gdal for raster files Cols: 16171 Rows: 20766 Bands: 1 Pixel value at 167,196: 32767 Minimum value of elevation: -197
- 20. Using ogr for vector files Provinces: 82 Extent: (116.92833709716797, 126.60534667968753, 4.586939811706543, 21.07014083862329) Second Province: Agusan del Norte
- 21. Visualizing spatial data through web maps “What you see when you view a map on Mapbox or an embedded map on your website is the result of many moving parts working together.” -Mapbox Leaflet Openlayers 3
- 22. An open-source JavaScript library for mobile-friendly interactive maps | Leaflet Vladimir Agafonkin Leaflet Plugins
- 23. A feature-packed library for all your mapping needs | Openlayers 3
- 24. Add processing power to your web maps
- 25. Spatial frameworks Cartaro: Geospatial Drupal
- 26. Spatial frameworks Geonode: Django Application
- 27. Spatial frameworks Geoserver: Java based geospatial server
- 32. List of Resources geographic data http://maptime.io/geodata/ http://mapschool.io/ http://spatialreference.org/ref/epsg/ spatial databases http://dna.fernuni-hagen.de/papers/IntroSpatialDBMS.pdf http://postgis.net/ http://workshops.boundlessgeo.com/postgis-intro/ web mapping http://leafletjs.com/ http://openlayers.org/ visualization & processing http://d3js.org/ http://turfjs.org/ http://www.gdal.org/gdal_tutorial.html
- 33. List of Resources visualization & processing http://geotools.org/ http://raphaeljs.com/ spatial data repository http://philgis.org/ http://www.bswm.maps.da.gov.ph/maps-library http://earthexplorer.usgs.gov/ spatial frameworks http://cartaro.org/ http://geoserver.org/ http://geodjango.org/ http://geonode.org/
- 34. Do you have any questions?
- 35. Thank you “Everything is related to everything else, but near things are more related than distant things.” -Waldo Tobler
- 36. Integrating Geospatial Data to your Applications November 14, 2015 by Ian Panganiban