令人驚訝的對齊發生在2048/5/28,內部5行星 具有日心經度(度): 248.229,66.631,246.967,249.605,67.684。線性適合行星位置
行星距離線(通過溶膠) 最多0.875度,坡度67.823度。在這種情況下,該方法尋求(PA)將給出: PA(248.229,66.631,246.967,249.605,67.684)=
我試圖兩個簡單的算法,該算法都失敗的情況下(67.823,0.875): 2003/9/9:340.256,180.320,346.156,342.316,150.285
一種方法給出斜率= 127.867,偏差= 51.019和另一種271.867,85.251。 我認爲一個正確的方法會給s = 163.466,d = 7.515。
主要問題是Sol兩側的行星可能(幾乎)在同一條線上。
Python或javascript讚賞。 耶我想出瞭如何編輯!或不。
def score3(wList):
wSize = len(wList)
#print wList
first = wList[0]
d1 = first - 90.0
if d1 < 0.0: d1 += 360.0
d2 = first + 90.0
if d2 > 360.0: d1 -= 360.0
if d1 > d2: d1,d2 = d2,d1
sum = 0.0
for wx in range(0,wSize):
curr = wList[wx]
if (curr > d1) and (curr < d2):
new = curr
else:
new = (curr + 180.0) % 360.0
wList[wx] = new
sum += new
#print '%7.3f --> %7.3f' % (curr, new)
avg = sum/wSize
#print avg, wList
score = 0.0
for wx in range(0,wSize):
curr = wList[wx]
diff = curr - avg
if diff < 0: diff = - diff
score += diff
score /= wSize
return avg, score
難道這是家庭作業嗎? – Bobby 2010-01-14 16:14:17
數學問題應該去mathoverflow.net。 – kennytm 2010-01-14 16:18:11
發佈您嘗試過的內容,然後您可以對方法進行批評 – KevinDTimm 2010-01-14 16:20:19