给出x，y和z角度的线图

Question

我有这条输出x，y和z角度的MATLAB代码，我想用它们绘制一条线。有人能指出我正确的方向吗？

 (0.5ms)  SELECT COUNT(*) AS count_all, "playlists"."song_id" AS 
 playlists_song_id FROM "playlists" WHERE "playlists"."user_id" = $1 
 GROUP BY "playlists"."song_id"  [["user_id", 1]]

 Song Load (0.3ms)  SELECT  "songs".* FROM "songs" WHERE "songs"."id" = 
 $1 LIMIT 1  [["id", 1]]

 => {#<Song id: 1, title: "A song", artist: "Artist", user_id: 1, 
 created_at: "2017-04-27 01:25:26", updated_at: "2017-04-27           
 01:25:26">=>2}

Answer 1

X，Y和Z不是角度，它们是由角度A，B和{{1}定义的旋转矩阵}。

目前尚不清楚“使用它们绘制线条”的含义是什么，它们只是用于在3D空间中旋转矢量。

这是一个用它们绘制旋转矢量的例子：

C