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さまざまな宇宙、空中現象の最新自動観測撮影装置ロボットSID-1(シドワン=Space Intrusion Detection systems-1)が捕らえた謎の現象や物体とUFO *撮影画像は、左下部のカテゴリーからSID-1~を選択(随時更新) *メディア、報道関係者の方へ:不思議な動画、静止画、解析画像多数有ります。情報、著作権等の権利は当観測所です。連絡先はプロフィール参照。

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UFO Sightings Data Visualization ( data comes from the National UFO Reporting Center )

2015-06-09 Tue 00:00

UFO Sightings Data Visualization ( data comes from the National UFO Reporting Center )
This data comes from the National UFO Reporting Center, which is "dedicated to the collection and dissemination of objective UFO data." That, and some census data, and we are off to the races.

Ratios!
Of course, as is the case for any observation data, there is a strong tendency towards echoing a population map. This is certainly the case with this sighting data, as well. In order to visualize the actual sighting phenomenon, I needed to normalize by the underlying population. The first, more prominent map shows a simple ratio of the sightings by population. A per-capita approach. The second, smaller and slightly more complex map, shows a bi-variate mapping of sightings in the color dimension (dark slate for low-sightings and bright green for high-sightings) and population density in the opacity dimension (denser populations are more transparent). The result is a map that is more nuanced regarding the problem of variable populations and area sizes. Double normalized? Sort of. If you would like to traverse the rich and complex world of bi-variate mapping, check out this tour-de-force how-to by Joshua Stevens.
UFO Sightings Data Visualization

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| Space Phenomena Observatory Center(SPOC) 宇宙現象観測所センター |
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