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Web Cartography

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  1. http://co2.digitalcartography.org/ Web Cartography

  2. Lecture Outline • Where we are and how we got here • Classifying web maps • Design considerations for web maps • Technology for web mapping • Great examples

  3. Trends in Cartographic Teaching and Research Thematic Mapping Empirical Cognitive Research: Cartographic ‘Rules’ Communication Vision, Cognition, Perception Eye Movement Studies Map Use and Map Design Volume of teaching and research Peak Community Mapping Web mapping Geo Visualization Human/machine interaction VGI Rise Decline Comeback GIS data input analysis Social theory Government production Delivery of data (packets) 10s 60s 70s 80s 90s 00s year

  4. Where we are • Web 2.0 • Cloud computing • User-generated information (VGI, citizen science) • Democratization of mapping (data software) • Multimedia • Interactivity = constant change

  5. Web vs print Pros Cons Access Quality/credibility/deconstruction Hardware constraints Network speed Fleetingness……. Too much, visual overload Data integrity • Access • Low cost • Multimedia • Interactivity • Up to date

  6. Classifying web maps (Kraak)

  7. Static, tremendous data, could be automatically updated: http://demographics.coopercenter.org/DotMap/index.html • Dynamic and interactive http://tipstrategies.com/geography-of-jobs/ http://metrocosm.com/global-immigration-map/

  8. Design considerations for web maps • Avoid simply posting copies of maps designed for print? • Consider characteristics, limitations, and opportunities of the web • Too complicated and animated…. Think back to vision, cognition, perception….

  9. Technology

  10. Tacloban Philippines after typhoon Haiyan Source: https://twitter.com/RBanick/status/400055778435809280

  11. How to do this? • HTML: HyperText Markup Language • Functional: level 1, level 2, cell, table etc • Structure interactive documents to be interpreted by your browser and lets you navigate through information • CSS: Cascading Style Sheets • Instructions to the browser on how to render the text • More about control over how results look • Define how documents look • CARTO uses CSS

  12. Javascript (different from java) • Way of animating HTML in the browser • When you have a service that performs geocoding and delivers results in geojson format – javascript is used to do something with geojson in browser – for example show points on map canvas • Any animated control on web maps is in javascript • CartoDB uses Javascript • D3 uses Javascript

  13. Cartodb.js is a Javascript library CSS

  14. HTML

  15. https://d3js.org/

  16. http://bl.ocks.org/mbostock/4060606

  17. Required Skills • Programming(Javascript) • Web Design (HTML +CSS) • Spatial Databases (PostgreSQL) • Linux Servers (how to host visuals)

  18. Resources • http://eloquentjavascript.net/ • Let’s Make a Map (D3) https://medium.com/@mbostock/command-line-cartography-part-1-897aa8f8ca2c • https://www.mapbox.com/ • http://leafletjs.com/ • http://postgis.net/ (database extender for PostgreSQL)

  19. Examples • http://www.nytimes.com/interactive/2013/04/08/business/global/asia-map.html • http://www.nytimes.com/interactive/2012/08/24/us/drought-crops.html • http://www.washingtonpost.com/wp-srv/special/local/dc-recovered-guns/ • http://www.globalforestwatch.org/map/9/49.97/-118.94/ALL • http://hint.fm/wind/ • http://www.ft.com/intl/cms/s/2/ad4ef6a4-503d-11e3-befe-00144feabdc0.html#axzz2lgzv1Rzb

  20. Designed by Alan McConchie, Lead Cartographer, Stamen Maps ArcGIS shape files Images, AI output Openstreetmap Google maps Stamen toner etc What is CARTO?

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