Matlab基本函式-compass函式
阿新 • • 發佈：2019-02-12
1、compass函式：羅盤圖
2、用法說明：
（1）compass(x,y)函式繪製一個由原點出發由(x,y)組成的向量箭頭圖形；
（2）compass(z)等價於compass（real(z),imag(z))；
（3）compass(...,LineSpec)函式用參量LineSpec指定箭頭的線型、標記符號、顏色等屬性；
（4）h = compass(...)函式返回line物件的控制代碼給h。
3、例項
3.1、compass(x,y)
（1）原始碼
（2）執行結果>> x=1:100 x = 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)
3.2、compass(z)
（1）原始碼
>> z=[1+2i 2+4i 5-6i]
z =
1.0000 + 2.0000i 2.0000 + 4.0000i 5.0000 - 6.0000i
>> compass(z)
3.3、compass(...,LineSpec)
（1）原始碼
compass(x,y,'--m')
3.4、h = compass(...)
（1）原始碼
>> 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