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Re: st: PCA
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: PCA
Date
Sat, 18 Jan 2014 10:59:44 +0000
By "excel" I understand the proprietary program MS Excel.
My previous answer showed how to get the eigenvalues into a variable
using -svmat-; then it's just a matter of your favourite way to get
into Excel, e.g. -export excel-.
In the case of a set of eigenvalues, copy-and-paste might well be as
easy as any other method.
Nick
[email protected]
On 18 January 2014 07:20, Muhammad Ramzan <[email protected]> wrote:
> 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.
> 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.
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