As David suggests, look at your data. For instance, there seems to be only 1
case (#2) for seat.width.club with non-zero data.
I find it hard to believe that the other planes have seat.widths of 0!
I think you probably want to code the 0s as missing, rather than 0.
You also want to rethink the variables since some of them are almost completely
missing.
At least 3 of your variables are completely collinear (they correlate 1.0 to 5
decimals)
Seat.width and pitch in club all correlate 1.0.
> On Jan 11, 2015, at 1:59 PM, David Winsemius <dwinsem...@comcast.net> wrote:
>
>
> On Jan 11, 2015, at 3:55 AM, 오건희 wrote:
>
>> Hi,
>>
>> I tried to run "principal" function in the 'psych' package, but it failed
>> to do..
>>
>> here is both my code and error message.
>>
>> I searched on the web, but couldn't find the exact answer I wanted.
>>
>>> data<-read.csv("
>> https://raw.githubusercontent.com/mylesmharrison/delta_PCA_kmeans/master/delta.csv
>> ",row.names=1)
>>
>>> airpca<-principal(data,nfactors=33,rotate="none")
>> Error in solve.default(model, r) :
>> system is computationally singular: reciprocal condition number =
>> 7.05776e-17
>> In addition: Warning messages:
>> 1: In cor.smooth(model) :
>> Matrix was not positive definite, smoothing was done
>> 2: In cor.smooth(r) : Matrix was not positive definite, smoothing was done
>
> Looks like your data is highly correlated in some of those columns:
>
>> dat[[1]]
> [1] 0.0 19.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
> 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
> [25] 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
> 0.0 0.0 0.0 0.0 0.0 0.0
>> dat[[29]]
> [1] 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0
>> dat[[2]]
> [1] 0 44 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> [42] 0 0 0
>> dat[[3]]
> [1] 0 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> [42] 0 0 0
>
> I'd retry after removing the problem columns.
>
>>
>> Thank you for your help.
>>
>> [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
> David Winsemius
> Alameda, CA, USA
>
> ______________________________________________
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
William Revelle http://personality-project.org/revelle.html
Professor http://personality-project.org
Department of Psychology http://www.wcas.northwestern.edu/psych/
Northwestern University http://www.northwestern.edu/
Use R for psychology http://personality-project.org/r
It is 5 minutes to midnight http://www.thebulletin.org
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R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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