本帖最后由 kong12 于 2009-9-9 22:06 编辑
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太平洋战争二维坐标系详解 5 `+ b3 z/ t/ R8 h* `# h
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例如: 0 V+ ^3 m0 Q+ a5 b' R: o% m" G
坐标55,67 & }, J: ~; D1 K6 S, C5 o: E
我们用x,y,分别代表这两个坐标。 x=55 y=67
+ G+ U- H8 ]6 d; K/ o% Z那么,x就是指向正右的,y是指向正下。大地图最左上角是零点。
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8 F1 m: G& R$ ~4 C, x" d值得注意的是,我们这里的坐标不是象大家所想的那样,它不同于常用的平面直角坐标系。
7 z4 }' m8 N/ h) K如图所示: 9 O) X1 w3 [* A, l; [) B S
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, p3 T N4 Q2 |' g3 l```````````````````│ 5 [: { `2 P. _& z3 n( I+ _' `; @5 M
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( _1 n! O( d* I````````───────┼──────→右(x轴) # o- l1 a# D5 f6 J# V/ |( b: x
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+ V1 O* U8 @ E7 U f+ J& P ↓
: J3 P9 u: O: @8 p 下(y轴)3 J1 r* I5 \+ s9 j' @
````````````````太平洋战争二维坐标系 |