Twitter icon  facebook icon  rss icon  feedly icon > xkcd日本語訳(2019年)  > Coordinate Precision - 座標精度

Coordinate Precision - 座標精度


Coordinate Precision(座標精度)

What The Number of Digits in Your Coordinates Means

Lat/Lon: 28°N, 80°W
Meaning: You're probably doing something space-related

Lat/Lon: 28.5°N, 80.6°W
Meaning: You're pointing out a specific city

Lat/Lon: 28.52°N, 80.68°W
Meaning: You're pointing out a neighborhood

Lat/Lon: 28.523°N, 80.683°W

Meaning: You're pointing out a specific suburban cul-de-sac

Lat/Lon: 28.5234°N, 80.6830°W
Meaning: You're pointing to a particular corner of a house

Lat/Lon: 28.52345°N, 80.68309°W
Meaning: You're pointing to a specific person in a room, but since you didn't include datum information, we can't tell who

Lat/Lon: 28.5234571°N, 80.6830941°W
Meaning: You're pointing to Waldo on a page

Lat/Lon: 28.523457182°N, 80.683094159°W
Meaning: "Hey, check out this specific sand grain!"

Lat/Lon: 28.523457182818284°N, 80.683094159265358°W
Meaning: Either you're handing out raw floating point variables, or you've built a database to track individual atoms. In either case, please stop.

Alt-text: 40 digits: You are optimistic about our understanding of the nature of distance itself.





 XKCDの作者、ランドール マンロー氏の著作本『ホワット・イフ?:野球のボールを光速で投げたらどうなるか』を紹介します。ウェブサイトに投稿された科学のおかしな質問を、XKCDばりの捻くれ方で回答し、それらを本にまとめたものです。こちらも面白いので是非に。

 この記事のカテゴリは、xkcd日本語訳(2019年) です。