help scoreplot, help loadingplot dialogs: scoreplot loadingplot
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Title
[MV] scoreplot -- Score and loading plots
Syntax
Plot score variables
scoreplot [, scoreplot_options]
Plot the loadings (factors, components, or discriminant functions)
loadingplot [, loadingplot_options]
scoreplot_options description
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Main
factors(#) number of factors/scores to be plotted; default
is factors(2)
components(#) synonym for factors()
norotated use unrotated factors or scores, even if rotated
results exist
matrix graph as a matrix plot, available only when
factor(2) is specified; default is a
scatterplot
combined graph as a combined plot, available when
factor(# > 2); default is a matrix plot
graph_matrix_options affect the rendition of the matrix graph
combine_options affect the rendition of the combined graph
scoreopt(predict_opts) options for predict generating score variables
marker_options change look of markers (color, size, etc.)
marker_label_options change look or position of marker labels
Y axis, X axis, Titles, Overall
twoway_options any options other than by() documented in
[G] twoway_options
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loadingplot_options description
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Main
factors(#) number of factors/scores to be plotted; default
is factors(2)
components(#) synonym for factors()
norotated use unrotated factors or scores, even if rotated
results exist
matrix graph as a matrix plot, available only when
factor(2) is specified; default is a
scatterplot
combined graph as a combined plot, available when
factor(# > 2); default is a matrix plot
graph_matrix_options affect the rendition of the matrix graph
combine_options affect the rendition of the combined graph
maxlength(#) abbreviate variable names to # characters;
default is maxlength(12)
marker_options change look of markers (color, size, etc.)
marker_label_options change look or position of marker labels
Y axis, X axis, Titles, Overall
twoway_options any options other than by() documented in
[G] twoway_options
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Menu
scoreplot
Statistics > Multivariate analysis > Factor and principal component
analysis > Postestimation > Score variables plot
loadingplot
Statistics > Multivariate analysis > Factor and principal component
analysis > Postestimation > Loading plot
Description
scoreplot produces scatterplots of the score variables after factor,
factormat, pca, or pcamat, and scatterplots of the discriminant score
variables after discrim lda or candisc.
loadingplot produces scatterplots of the loadings (factors or components)
after factor, factormat, pca, or pcamat, and the standardized
discriminant function loadings after discrim lda or candisc.
Options
+------+
----+ Main +-------------------------------------------------------------
factors(#) produces plots for all combination of score variables up to #.
# should not exceed the number of retained factors (components or
discriminant functions) and defaults to 2. components() is a
synonym. No plot is produced with factors(1).
norotated uses unrotated results, even when rotated results are
available. The default is to use rotated results if they are
available. norotated is ignored if rotated results are not
available.
matrix specifies that plots be produced using graph matrix. This is the
default when three or more factors are specified. This option may
not be used with combined.
combined specifies that plots be produced using graph combine. This
option may not be used with matrix.
graph_matrix_options affect the rendition of the matrix plot; see [G]
graph matrix.
combine_options affect the rendition of the combined plot; see [G] graph
combine. combine_options may not be specified unless factors() is
greater than 2.
scoreopt(predict_opts), an option used with scoreplot, specifies options
for predict to generate the score variables. For example, after
factor, scoreopt(bartlett) specifies that Bartlett scoring be
applied.
maxlength(#), an option used with loadingplot, causes the variable names
(used as point markers) to be abbreviated to # characters. The
abbrev() function performs the abbreviation, and if # is less than 5,
it is treated as 5.
marker_options affect the rendition of markers drawn at the plotted
points, including their shape, size, color, and outline; see [G]
marker_options.
marker_label_options specify if and how the markers are to be labeled;
see [G] marker_label_options.
+---------------------------------+
----+ Y axis, X axis, Titles, Overall +----------------------------------
twoway_options are any of the options documented in [G] twoway_options,
excluding by(). These include options for titling the graph (see [G]
title_options) and for saving the graph to disk (see [G]
saving_option).
Remarks
As the number of factors() or components() increases, the graphing area
for each plot gets smaller. Although the default matrix view (option
matrix) may be the most natural, the combined view (option combined)
displays half as many graphs. However, the combined view uses more space
for the labeling of axes than the matrix view. Regardless of the choice,
with many requested factors or components the graphs become too small to
be of any use. In loadingplot the maxlength() option will trim the
variable name marker labels that are automatically included. This may
help reduce overlap when multiple small graphs are shown. You can go
further and remove these marker labels by using the mlabel("") graph
option.
Examples
Setup
. sysuse auto
. pca price trunk rep78 head disp gear, comp(3)
Draw loading plot
. loadingplot
Draw score plot
. scoreplot, mlabel(make)
Also see
Manual: [MV] scoreplot
Help: [MV] candisc, [MV] discrim lda, [MV] discrim lda postestimation,
> [MV] factor, [MV] factor postestimation, [MV] pca, [MV] pca
postestimation; [MV] screeplot
