相关矩阵MATLAB [英] correlation matrix MATLAB

问题描述

您知道一个matlab脚本，该脚本获取一组数据的相关矩阵，例如column = 7的numbe和row = n >> 7的行

Do you know a matlab script that gets the correlation matrix of a set of data like numbe of columns=7, and rows = 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
....

推荐答案

尝试 corrcoef .

通常，您可以通过搜索在线帮助来立即找到这些东西，例如通过方便的lookfor命令:

In general, you can find these sort of things immediately by searching the online help, for example via the convenient lookfor command:

>> 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);

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