相关矩阵MATLAB

Question

你知道一个matlab脚本获取一组数据的相关矩阵，例如numbe of columns = 7，rows = n＆gt;＆gt; 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，您可以通过搜索在线帮助立即找到这类内容，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);