Matlab基本函数-compass函数

1、compass函数：罗盘图

2、用法说明：

（1）compass(x,y)函数绘制一个由原点出发由(x,y)组成的向量箭头图形；

（2）compass(z)等价于compass（real(z),imag(z))；

（3）compass(...,LineSpec)函数用参量LineSpec指定箭头的线型、标记符号、颜色等属性；

（4）h = compass(...)函数返回line对象的句柄给h。

3、实例

 3.1、compass(x,y)

  （1）源码

>> x=1:100x =  Columns 1 through 17     1     2     3     4     5     6     7     8     9    10    11    12    13    14    15    16    17  Columns 18 through 34    18    19    20    21    22    23    24    25    26    27    28    29    30    31    32    33    34  Columns 35 through 51    35    36    37    38    39    40    41    42    43    44    45    46    47    48    49    50    51  Columns 52 through 68    52    53    54    55    56    57    58    59    60    61    62    63    64    65    66    67    68  Columns 69 through 85    69    70    71    72    73    74    75    76    77    78    79    80    81    82    83    84    85  Columns 86 through 100    86    87    88    89    90    91    92    93    94    95    96    97    98    99   100>> y=rand(1,100)y =  Columns 1 through 10    0.8147    0.9058    0.1270    0.9134    0.6324    0.0975    0.2785    0.5469    0.9575    0.9649  Columns 11 through 20    0.1576    0.9706    0.9572    0.4854    0.8003    0.1419    0.4218    0.9157    0.7922    0.9595  Columns 21 through 30    0.6557    0.0357    0.8491    0.9340    0.6787    0.7577    0.7431    0.3922    0.6555    0.1712  Columns 31 through 40    0.7060    0.0318    0.2769    0.0462    0.0971    0.8235    0.6948    0.3171    0.9502    0.0344  Columns 41 through 50    0.4387    0.3816    0.7655    0.7952    0.1869    0.4898    0.4456    0.6463    0.7094    0.7547  Columns 51 through 60    0.2760    0.6797    0.6551    0.1626    0.1190    0.4984    0.9597    0.3404    0.5853    0.2238  Columns 61 through 70    0.7513    0.2551    0.5060    0.6991    0.8909    0.9593    0.5472    0.1386    0.1493    0.2575  Columns 71 through 80    0.8407    0.2543    0.8143    0.2435    0.9293    0.3500    0.1966    0.2511    0.6160    0.4733  Columns 81 through 90    0.3517    0.8308    0.5853    0.5497    0.9172    0.2858    0.7572    0.7537    0.3804    0.5678  Columns 91 through 100    0.0759    0.0540    0.5308    0.7792    0.9340    0.1299    0.5688    0.4694    0.0119    0.3371>> compass(x,y)

 （2）运行结果

3.2、compass(z)

（1）源码

>> z=[1+2i 2+4i 5-6i]z =   1.0000 + 2.0000i   2.0000 + 4.0000i   5.0000 - 6.0000i>> compass(z)

（2）结果

3.3、compass(...,LineSpec)

（1）源码

 compass(x,y,'--m')

（2）结果

3.4、h = compass(...)

（1）源码

>> h=compass(x,y,'--m')h =  199.0013  200.0013  201.0013  202.0013  203.0013  204.0013  205.0013  206.0013  207.0013  208.0013  209.0013  210.0013  211.0013  212.0013  213.0013  214.0013  215.0013  216.0013  217.0013  218.0013  219.0013  220.0013  221.0013  222.0013  223.0013  224.0013  225.0013  226.0013  227.0013  228.0013  229.0013  230.0013  231.0013  232.0013  233.0013  234.0013  235.0013  236.0013  237.0013  238.0013  239.0013  240.0013  241.0013  242.0013  243.0013  244.0013  245.0013  246.0013  247.0013  248.0013  249.0013  250.0013  251.0013  252.0013  253.0013  254.0013  255.0013  256.0013  257.0013  258.0013  259.0013  260.0013  261.0013  262.0013  263.0013  264.0013  265.0013  266.0013  267.0013  268.0013  269.0013  270.0013  271.0013  272.0013  273.0013  274.0013  275.0013  276.0013  277.0013  278.0013  279.0013  280.0013  281.0013  282.0013  283.0013  284.0013  285.0013  286.0013  287.0013  288.0013  289.0013  290.0013  291.0013  292.0013  293.0013  294.0013  295.0013  296.0013  297.0013  298.0013