Mapping beyond web mercator with GeoServer

Transcript

1. Mapping beyond web mercator Ing. Andrea Aime GeoSolutions

2. GeoSolutions ⚫ Italian SME ⚫ Expertise • Image Processing, GeoSpatial

   Data Fusion • Java, Java Enterprise, C++, Python • JPEG2000, JPIP, Advanced 2D visualization ⚫ Supporting/Developing FOSS4G projects ⚫ GeoServer, MapStore ⚫ GeoNetwork, GeoNode, Ckan ⚫ Clients ⚫ Public Agencies ⚫ Private Companies ⚫ http://www.geo-solutions.it FOSS4G 2019, August 26th/30th, Bucharest

3. Why Web Mercator

4. Why: it’s everywhere, it’s free FOSS4G 2019, August 26th/30th, Bucharest

5. Why: familiar FOSS4G 2019, August 26th/30th, Bucharest

6. Why: easy FOSS4G 2019, August 26th/30th, Bucharest

7. Why: fair to the dateline FOSS4G 2019, August 26th/30th, Bucharest

8. Some reasons to avoid Web Mercator

9. One reason to rule them all FOSS4G 2019, August 26th/30th,

   Bucharest

10. Area distortion in web mercator FOSS4G 2019, August 26th/30th, Bucharest

11. Equal-area maps to the rescue Lambert azimuthal equal area Mollweide

    Equal Earth FOSS4G 2019, August 26th/30th, Bucharest

12. FAO example FOSS4G 2019, August 26th/30th, Bucharest

13. Distance perception http://braincrunch.tumblr.com/post/23672142073/mercators-egg FOSS4G 2019, August 26th/30th, Bucharest

14. Equidistant maps to the rescue FOSS4G 2019, August 26th/30th, Bucharest

15. Example: weather radar maps https://weather.gc.ca/radar/index_e.html?id=xsm FOSS4G 2019, August 26th/30th, Bucharest

16. Who ate the poles?! FOSS4G 2019, August 26th/30th, Bucharest

17. Polar stereographic http://www.add.scar.org/home/add6 FOSS4G 2019, August 26th/30th, Bucharest

18. Polar stereographic http://www.polarview.aq/ (also GeoServer powered) FOSS4G 2019, August 26th/30th,

    Bucharest

19. FAO Species Distribution FOSS4G 2019, August 26th/30th, Bucharest

20. And then… legislation FOSS4G 2019, August 26th/30th, Bucharest

21. And then… AUTO codes FOSS4G 2019, August 26th/30th, Bucharest

22. Handling all these projections

23. Should be simple no? FOSS4G 2019, August 26th/30th, Bucharest

24. One (tragic) example FOSS4G 2019, August 26th/30th, Bucharest UTM 32N

25. What’s going on? FOSS4G 2019, August 26th/30th, Bucharest

26. Automate! With APH FOSS4G 2019, August 26th/30th, Bucharest

27. Step 1: which data to read Requested Read FOSS4G 2019,

    August 26th/30th, Bucharest

28. Step 2: cut excess data FOSS4G 2019, August 26th/30th, Bucharest

29. Step 3: data wrapping Requested Read FOSS4G 2019, August 26th/30th,

    Bucharest

30. Step 4: densification FOSS4G 2019, August 26th/30th, Bucharest

31. Step 4: densification FOSS4G 2019, August 26th/30th, Bucharest

32. Step 5: reproject FOSS4G 2019, August 26th/30th, Bucharest

33. Step 6: detect dateline crossing FOSS4G 2019, August 26th/30th, Bucharest

34. Some side by side examples FOSS4G 2019, August 26th/30th, Bucharest

35. PDC Mercator, EPSG:3832 Antactica was here… Funny Greenland … FOSS4G

    2019, August 26th/30th, Bucharest

36. Lambert conf. conic, EPSG:2225 ?!! FOSS4G 2019, August 26th/30th, Bucharest

37. Datum change, ED50, EPSG:4230 FOSS4G 2019, August 26th/30th, Bucharest

38. UTM32N, EPSG:32632 FOSS4G 2019, August 26th/30th, Bucharest

39. No reprojection, but Pacific centered Would really like to see

    Americas here… FOSS4G 2019, August 26th/30th, Bucharest

40. Some other hard data

41. Data between 0 and 360 FOSS4G 2019, August 26th/30th, Bucharest

42. Satellites satellites FOSS4G 2019, August 26th/30th, Bucharest

43. And more satellites FOSS4G 2019, August 26th/30th, Bucharest

44. Final words

45. The beginning of the end? FOSS4G 2019, August 26th/30th, Bucharest

46. In summary FOSS4G 2019, August 26th/30th, Bucharest

47. That’s all folks! Questions? info@geo-solutions.it