Matlab常用函数

1. linspace Linearly spaced vector.
   linspace(X1, X2) generates a row vector of 100 linearly
   equally spaced points between X1 and X2.

   linspace(X1, X2, N) generates N points between X1 and X2.
   For N = 1, linspace returns X2.

简单来说就是，linspace函数第一个参数和第二个参数是生成序列的范围，第三个参数缺省时在范围内生成100个等距的数值，否则生成N个等距的数值。

>> linspace(1,10)ans =  1 至 12 列    1.0000    1.0909    1.1818    1.2727    1.3636    1.4545    1.5455    1.6364    1.7273    1.8182    1.9091    2.0000  13 至 24 列    2.0909    2.1818    2.2727    2.3636    2.4545    2.5455    2.6364    2.7273    2.8182    2.9091    3.0000    3.0909  25 至 36 列    3.1818    3.2727    3.3636    3.4545    3.5455    3.6364    3.7273    3.8182    3.9091    4.0000    4.0909    4.1818  37 至 48 列    4.2727    4.3636    4.4545    4.5455    4.6364    4.7273    4.8182    4.9091    5.0000    5.0909    5.1818    5.2727  49 至 60 列    5.3636    5.4545    5.5455    5.6364    5.7273    5.8182    5.9091    6.0000    6.0909    6.1818    6.2727    6.3636  61 至 72 列    6.4545    6.5455    6.6364    6.7273    6.8182    6.9091    7.0000    7.0909    7.1818    7.2727    7.3636    7.4545  73 至 84 列    7.5455    7.6364    7.7273    7.8182    7.9091    8.0000    8.0909    8.1818    8.2727    8.3636    8.4545    8.5455  85 至 96 列    8.6364    8.7273    8.8182    8.9091    9.0000    9.0909    9.1818    9.2727    9.3636    9.4545    9.5455    9.6364  97 至 100 列    9.7273    9.8182    9.9091   10.0000>> linspace(1,10,10)ans =     1     2     3     4     5     6     7     8     9    10

2.