相关矩阵 MATLAB

发布于 2024-10-18 11:56:32 字数 402 浏览 0 评论 0原文

您是否知道一个 matlab 脚本，它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
....

原文

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
....

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蓝礼 2024-10-25 11:56:32

尝试corrcoef。

一般来说，您可以通过搜索在线帮助立即找到此类内容，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);

Try corrcoef.

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.

For instance