PrincompGUI {DASplusR} | R Documentation |
Starts the graphical user interface for principal component analysis.
When the OK button is clicked, princompDAS
is executed
and a summary of the results is shown in the output window of DAS+R.
## DAS+R GUI: Advanced --> Princ. Components Anal. --> Compute PCs ## R Function Usage: PrincompGUI()
"princomp"
. Such an object is only listed here if the function
call used for its computation satisfies one of the following two
conditions: either the active data set has been used as the data
argument, or no data
argument has been supplied. Because an
already existing object is used and no calculation will be done, all
other dialog elements, except the checkboxes for the scree plot and the
biplot, are disabled. They cannot be used until this checkbox is
unchecked again.center
and cov
, as returned by cov.wt
(or
covMcd
from package robustbase).
Scores cannot be computed if the selected object is a matrix, as no
estimate of the central location of the data is supplied. In any case,
make sure that the same variables are selected that have been used to
calculate the covariance matrix. Additionally, log-transformation and
robust estimation of the covariance matrix cannot be used anymore.
Hence the corresponding dialog elements are disabled until this checkbox
is unchecked again."princomp"
. One of the following two conditions on the function
call used to compute such an object has to hold: either the active data
set has been used as the data
argument, or no data
argument has been supplied. Otherwise, the object is not shown in
the list.princompDAS
. A summary
of the results is shown in the output window of DAS+R.princompDAS
.Andreas Alfons <andreas.alfons@student.tuwien.ac.at>
Mardia, K.V., Kent, J.T. and Bibby, J.M. (1979) Multivariate Analysis. Academic Press.
Johnson, R.A. and Wichern, D.W. (2002) Applied Multivariate Statistical Analysis. Prentice Hall. 5th edition.
Reimann, C., Filzmoser, P., Garrett, R.G. and Dutter, R. (2008) Statistical Data Analysis Explained. Wiley & Sons.
princompDAS
, LogTransform
,
ScreeplotGUI
, BiplotGUI
.