[問題] 多變數函數中如何固定某些變數做圖/畫線?
[問題類型]:
程式諮詢(我想用R 做某件事情,但是我不知道要怎麼用R 寫出來)
[軟體熟悉度]:
新手
[問題敘述]:
小弟現在有20筆data,假設叫T,和自己定義的函數surlikelihood(x,t),
其中x包含變數(x1,x2,x3),t是輸入的data,
把這20筆data代入surlikelihood(x,t),即surlikelihood(x,T)
整理成有3個變數的函數,即surlikelihood=f(x1,x2,x3),0<x1<1,0<x2,0<x3,
想對這個函數作圖,要在四度空間才辦的到,所以我想固定x3=5之下,
去畫surlikelihood=f(x1,x2,5)的三維度立體圖,該怎麼做?
固定x2=5,x3=5之下,去畫surlikelihood=f(x1,5,5)的二維度曲線,又該怎麼做?
範例附上20筆data和surlikelihood函數,還請版上高手和先進們給小弟指教,
謝謝~
[程式範例]:
http://pastebin.com/EEgXsWHA
[環境敘述]:
R x64 3.3.1
[關鍵字]:
高維度
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