getPP3loadings: Extract projection loadings from a PP3 object.
In PP3: Three-Dimensional Exploratory Projection Pursuit
Description
Usage
Arguments
Details
Value
Author(s)
References
See Also
Examples
Description
Extract projection loadings (directions) from a PP3 object.
Usage
1
getPP3loadings(PP3, number)
Arguments
PP3
The PP3 object.
number
which projection solution you want to get.
Details
Gets projection directions associated with a particular solution
from the nrandstarts that PP3many produces.
Value
A matrix of dimensional 3xK, where K was the original dimensionality
of the input data set. Note: they are not an orthogonal set,
but the back transform of an orthogonal set (back transformed
from the inverse sphering transform).
Author(s)
G. P. Nason
References
Friedman, J.H. and Tukey, J.W. (1974) A projection pursuit algorithm
for exploratory data analysis. IEEE Trans. Comput.,
23, 881-890.
Jones, M.C. and Sibson, R. (1987) What is projection pursuit? (with discussion)
J. R. Statist. Soc. A, 150, 1-36.
Nason, G. P. (1995) Three-dimensional projection pursuit.
J. R. Statist. Soc. C, 44, 411-430.
Nason, G. P. (2001) Robust projection indices.
J. R. Statist. Soc. B, 63, 551-567.
See Also
Examples
1
2
3
4
#
# See example for getPP3index in the help for PP3many, this function
# works similarly but returns loadings rather than indices.
#
PP3 documentation built on May 2, 2019, 8:57 a.m.
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Description Usage Arguments Details Value Author(s) References See Also Examples
Description
Extract projection loadings (directions) from a PP3 object.
Usage
1 | getPP3loadings(PP3, number)
|
Arguments
PP3 |
The PP3 object. |
number |
which projection solution you want to get. |
Details
Gets projection directions associated with a particular solution
from the nrandstarts that PP3many produces.
Value
A matrix of dimensional 3xK, where K was the original dimensionality of the input data set. Note: they are not an orthogonal set, but the back transform of an orthogonal set (back transformed from the inverse sphering transform).
Author(s)
G. P. Nason
References
Friedman, J.H. and Tukey, J.W. (1974) A projection pursuit algorithm for exploratory data analysis. IEEE Trans. Comput., 23, 881-890.
Jones, M.C. and Sibson, R. (1987) What is projection pursuit? (with discussion) J. R. Statist. Soc. A, 150, 1-36.
Nason, G. P. (1995) Three-dimensional projection pursuit. J. R. Statist. Soc. C, 44, 411-430.
Nason, G. P. (2001) Robust projection indices. J. R. Statist. Soc. B, 63, 551-567.
See Also
Examples
1 2 3 4 | #
# See example for getPP3index in the help for PP3many, this function
# works similarly but returns loadings rather than indices.
#
|
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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