Google Earth Engine チュートリアル for G-SPASE 2018

20180608 G-SPASE 宇宙ソリューションデザイン入門コース①
@ 慶應義塾大学日吉キャンパス

© mapconcierge, CC BY-SA 4.0, updated at 2018/06/08 19:02 JST

この資料は、3月に開催された Google Earth Engine mini-summit Tokyo 2018での
Nick Clinton氏（Earth Engine Developer Relations）の資料をベースに、
再編集したものです。コンテンツの著作権は Nick Clinton氏および Google社に帰属します。

Transcript

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2. https://github.com/G-SPASE/GoogleEarthEngineTraining2018
3. https://goo.gl/U2FtmE
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6. Earth Engine Japan 2018 Nick Clinton Earth Engine Developer Relations https://goo.gl/THU4Y9 ͜ͷࢿྉ͸ɺ3݄ʹ։࠵͞Εͨ Google Earth Engine mini-summit Tokyo 2018Ͱͷ Nick ClintonࢯʢEarth Engine Developer RelationsʣͷࢿྉΛϕʔεʹɺ ࠶ฤूͨ͠΋ͷͰ͢ɻίϯςϯπͷஶ࡞ݖ͸ Nick Clintonࢯ͓Αͼ Googleࣾʹؼଐ͠·͢ɻ
7. Source: NASA
8. "To organize the world's information and make it universally accessible and useful."
 
 ੈքͷ৘ใΛ੔ཧ͠ɺ͍ͭͰ΋Ͳ͜Ͱ΋ΞΫηεՄೳͰ༗༻ͳ΋ͷʹ͢Δɻ https://www.google.com/about/company/ Google Mission Statement
9. -Jim Gray (1944-2007) “Often it turns out to be more efficient to move the questions than to move the data.” σʔλΛҠಈ͢ΔΑΓ΋ɺ
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10. > 17 Petabytes of Earth observation data (imagery, weather, etc.)
11. Google computational infrastructure
12. Powerful JavaScript* API * python too!
14. Before Earth Engine
19. https://earthengine.google.com/timelapse/
21. Data catalog
22. Search!
23. Hot Vegetated Rough
25. https://code.earthengine.google.com/8bdb313355b877fec82283cd89fcd2e2 https://code.earthengine.google.com/8bdb313355b877fec82283cd89fcd2e2
26. How to use Earth Engine
27. Javascript API Interactive Code Editor Node.js* Python API Python module Web Apps with Appengine Jupyter Notebooks* How Do I Use It?
28. On-Demand Computation Batch Computation • Just-in-time map tile rendering • Reduce human time: iterate quickly! • Reduce CPU costs: 
 only compute what you actually need! • Reduce disk costs: 
 only store what you actually need! • Host a “virtual exabyte” of scientific data products 2 Computation Modes
29. • Large-scale computation powered by Flume/MapReduce • Reduce CPU costs: run at batch priority • Reduce serving latency: store all tiles as static resources • Run computations that require analysis of complete data Batch Computation Batch Computation 2 Computation Modes
30. Confidential + Proprietary The Earth Engine Code Editor Your Scripts & Example Scripts API Docs Your Data Search Your Code Data Inspector Batch Tasks Output Console Drawing Tools Map code.earthengine.google.co
31. Geospatial
 Datasets Algorithmic
 Primitives add focal_min filter reduce join distance mosaic convolve Results Storage and Compute Requests
33. 8F
    IBWF
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34. -FU`T
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35. 5PEBZ`T
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36. &MFWBUJPO
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38. 4BUFMMJUF
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39. “ALOS” Ͱݕࡧͯ͠ɺALOS DSM: Global 30m Λબ୒ɻ
40. [Import] ϘλϯΛΫϦοΫ
41. ΦϒδΣΫτม਺໊Λ image ͔Β alosdsm ʹมߋ
42. Map.addLayer(alosdsm,{min:0, max:3000},"ALOS DSM”); 1ߦ໨ʹ ҎԼͷMap.addLayer ؔ਺Λ௥Ճ
43. 3VO
45. ֮͑ΔΩʔϫʔυ͸ Map.addLayer