[討論] NBA命中地圖
參考來源:
http://offthedribble.blogs.nytimes.com/2012/03/03/mapping-the-n-b-a/
這是一篇紐約時報的報導，從一個驚人的統計中，探討誰是NBA最佳射手，以及半場中
哪個角落擁有最高的出手次數，以及每次出手可得到的分數(points per attempt)
(左右底線命中率超高!)
-------------------------------以下正文------------------------------
Many basketball statistics focus on discrete events — whether a player made
a shot, or blocked one. But doesn’t it matter where those events happen?
許多籃球統計專注離散的事件上--球員是不是出手了，是不是蓋了個火鍋，但是，
這些事件在哪裡發生的就不重要嗎?
Kirk Goldsberry, a visiting scholar on geography at Harvard, is one of the
people at M.I.T.’s Sloan Sports Analytics Conference dabbling in sports after
developing skills in another field. He has worked as a professor, and creating
maps that give insight into public health issues.
同時是哈佛地理學學者，也是MIT運動分析會一員的Kirk Goldsberry，運用他的專業
，涉獵其他領域，他是一位教授，並且曾經創造出可以給與公眾健康議題洞察的地圖。
He set out to answer who was the best shooter in the N.B.A., a quality that
traditional metrics like shooting percentage do not fully address.
(Tyson Chandler currently leads the league in field-goal percentage, for
instance, largely because he specializes in the kind of jump shots that end
with both of his hands touching the rim.)
他想知道誰是NBA裡最佳的射手，傳統的統計像是命中率，並不能明確說明。舉例來說，
拳王是聯盟裡命中率最高的球員，可能他都是用他的雙手灌爆籃框。
To do this, Goldsberry divided the area from just behind the 3-point line
down to the rim into 1,284 “shooting cells,” and looked at how players shot
during every N.B.A. game between 2006 and 2011. Not a single player took a
shot from every spot on the floor. (Kobe Bryant came the closest, shooting
from 1,071 places. ) Then, Goldsberry looked at which players averaged more
than one point per attempt from the greatest percentage of the places they
shot from.
為了做到這個，教授把三分線到籃框的半場區域，分割成1284個"出手細胞"，並且看看
從2006年到2011年，NBA的球員是如何出手。每一個球員不是在任何一點都會出手。
Kobe最接近(所有點都能出手)，在1071個點上有出手過(編按:老大真是無所不在阿..)。
教授進一步分析，從這些他們最常出手的點上，哪些點球員平均每次嘗試出手，能夠
得到超過1分
By this analysis, Steve Nash and Ray Allen were the best shooters in the
league.
透過這項分析，飄髮哥Nash，和雷槍是聯盟中最佳射手。
-------------------------------原文下略-------------------------------------
邊譯心得:
紐時PO出的這張統計圖，每一個"出手細胞"方框愈大者，表示愈常在那個點出手。
顏色遇偏紅者，每次出手能得到的分數期望值愈高。看起來還滿合理的。和站2-3區域
的防守佈陣有像XD
只是這張應該是所有NBA球員的統計，如果有個別球員的分佈圖就酷惹。
原文中還說了這張圖可以看出，哪裡最容易被抄，哪個球員哪裡命中率好之類的。
不知道書豪哥的圖是長怎樣?
希望沒OP，感謝各位先進!
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