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Re: st: PCA
From
Muhammad Ramzan <[email protected]>
To
[email protected]
Subject
Re: st: PCA
Date
Sat, 18 Jan 2014 12:20:30 +0500
thanks Nick , for your help.
I have modified the code to get the eigenvector. can i save the values
of first eigen vector in excel.
sysuse auto,clear
pca trunk weight length headroom displacement
mat eigenv = e(L)
mat li eigenv
Comp1 Comp2 Comp3 Comp4 Comp5
trunk .43335481 .36647998 -.7676352 .29135313 .06120126
weight .48420457 -.33293068 .07372254 -.2668877 .76028879
length .48630825 -.23721442 -.10501275 -.57452327 -.60508589
headroom .35873169 .76396311 .52237979 -.12092568 .01297203
displacement .46104816 -.33902696 .34841479 .70652976 -.22785555
I want to save the first comp1 in Excel.
Thanks
On 18 January 2014 01:39, Nick Cox <[email protected]> wrote:
> With some guesses on what Muhammad is asking here:
>
> Consider this code example and its results:
>
> sysuse auto
> pca trunk weight length headroom displacement
> mat eigenv = e(Ev)
> mat li eigenv
> mat eigenv = e(Ev)'
> mat li eigenv
> svmat eigenv
> l eigenv1 in 1/5
>
> Nick
> [email protected]
>
> Muhammad Ramzan
>
>> how to sun flowwing commands after PCA command.
>>
>> e(Ev) 1 x p matrix of eigenvalues (sorted)
>> e(L) p x f matrix of eigenvectors = components
>
> Muhammad Ramzan
>
>>> is there any way to save the eigenvector obtained form pca command.
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/faqs/resources/statalist-faq/
> * http://www.ats.ucla.edu/stat/stata/
--
Assalam-o-Alaikum
Muhammad Ramzan
Lecturer (Economics)
Pakistan Institute of Development Economics
Islamabad
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/