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.
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William Revellehttp://personality-project.org/revelle.html
Professor http://personality-project.org
Department of Psychology http://www.wcas.northwestern.edu/psych/
Northwestern Universityhttp://www.northwestern.edu/
Use R for psychology http://personality-project.org/r
It is 5 minutes to midnighthttp://www.thebulletin.org
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