matlab - 相关矩阵 MATLAB

Question

你知道一个 matlab 脚本可以获取一组数据的相关矩阵，例如列数 = 7，行数 = n>>7

 x1      x2      x3      x4     x5     x6      x7 

0.780   2.042   2.754   2.894  5.000  5.000  5.000
0.767   0.816   2.758   2.898  5.000  1.644  1.626
0.816   0.836   1.558   2.124  2.952  5.000  5.000
0.848   0.871   1.588   2.147  2.966  5.000  5.000
1.378   1.620   1.433   2.567  3.268  3.203  5.000
....

Answer 1

尝试 corrcoef .

通常，您可以通过搜索联机帮助立即找到这些内容，例如通过方便的lookfor 命令:

>> lookfor correlation
corrcoef                       - Correlation coefficients.
msfuncorr                      - an M-S-function which performs auto- and cross-
...

>> help corrcoef
CORRCOEF Correlation coefficients.
   R=CORRCOEF(X) calculates a matrix R of correlation coefficients for
   an array X, in which each row is an observation and each column is a
   variable.

例如

load file.txt
result= CORRCOEF(file);