[求助]cmdscale

bondzh

问一下 cmdscale的作用是什么，看了help没看明白

bondzh

周末都没人在么？

yihui

cmdscale package:stats R Documentation

Classical (Metric) Multidimensional Scaling

Description:

Classical multidimensional scaling of a data matrix. Also known as

_principal coordinates analysis_ (Gower, 1966).

bondzh

等于没说，换种问法：什么叫经典多维标度

yihui

帮助里面说参考

Gower, J. C. (1966) Some distance properties of latent root and

vector methods used in multivariate analysis. _Biometrika_

*53*, 325-328.

不过我瞄了一眼，似乎没找到principal coordinates analysis的出处……

Anyway，你可以看看http://cos.name/bbs/read.php?tid=163那本SPSS教程：）