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Usage
A parallel coordinates plot represents each variable in a
multivariate data set as a separate axis. Individual samples
of that data set are represented as a polyline that pass
through each variable axis at positions that correspond to
data values. vtkParallelCoordinatesRepresentation generates
this plot when added to a vtkParallelCoordinatesView, which
handles interaction and highlighting. Sample polylines can
alternatively be represented as s-curves by enabling the
UseCurves flag.
There are three selection modes: lasso, angle, and function.
Lasso selection picks sample lines that pass through a
polyline. Angle selection picks sample lines that have
similar slope to a line segment. Function selection picks
sample lines that are near a linear function defined on two
variables. This function specified by passing two (x,y)
variable value pairs.
All primitives are plotted in normalized view coordinates
[0,1].
To create an instance of class
vtkParallelCoordinatesRepresentation, simply invoke its
constructor as follows
obj = vtkParallelCoordinatesRepresentation
Methods
The class vtkParallelCoordinatesRepresentation has several
methods that can be used. They are listed below. Note that
the documentation is translated automatically from the VTK
sources, and may not be completely intelligible. When in
doubt, consult the VTK website. In the methods listed below,
obj is an instance of the
vtkParallelCoordinatesRepresentation class.
* string = obj.GetClassName ()
* int = obj.IsA (string name)
* vtkParallelCoordinatesRepresentation = obj.NewInstance ()
* vtkParallelCoordinatesRepresentation = obj.SafeDownCast
(vtkObject o)
* obj.ApplyViewTheme (vtkViewTheme theme) - Apply the theme
to this view. CellColor is used for line coloring and
titles. EdgeLabelColor is used for axis color. CellOpacity
is used for line opacity.
* string = obj.GetHoverText (vtkView view, int x, int y) -
Returns the hover text at an x,y location.
* int = obj.SetPositionAndSize (double position, double
size) - Change the position of the plot
* int = obj.GetPositionAndSize (double position, double
size) - Change the position of the plot
* obj.SetAxisTitles (vtkStringArray ) - Set/Get the axis
titles
* obj.SetAxisTitles (vtkAlgorithmOutput ) - Set/Get the axis
titles
* obj.SetPlotTitle (string ) - Set the title for the entire
plot
* int = obj.GetNumberOfAxes () - Get the number of axes in
the plot
* int = obj.GetNumberOfSamples ()
* obj.SetNumberOfAxisLabels (int num) - Set/Get the number
of labels to display on each axis
* int = obj.GetNumberOfAxisLabels () - Set/Get the number of
labels to display on each axis
* int = obj.SwapAxisPositions (int position1, int position2)
- Move an axis to a particular screen position. Using
these methods requires an Update() before they will work
properly.
* int = obj.SetXCoordinateOfPosition (int position, double
xcoord) - Move an axis to a particular screen position.
Using these methods requires an Update() before they will
work properly.
* double = obj.GetXCoordinateOfPosition (int axis) - Move an
axis to a particular screen position. Using these methods
requires an Update() before they will work properly.
* obj.GetXCoordinatesOfPositions (double coords) - Move an
axis to a particular screen position. Using these methods
requires an Update() before they will work properly.
* int = obj.GetPositionNearXCoordinate (double xcoord) -
Move an axis to a particular screen position. Using these
methods requires an Update() before they will work
properly.
* obj.SetUseCurves (int ) - Whether or not to display using
curves
* int = obj.GetUseCurves () - Whether or not to display
using curves
* obj.UseCurvesOn () - Whether or not to display using
curves
* obj.UseCurvesOff () - Whether or not to display using
curves
* obj.SetCurveResolution (int ) - Resolution of the curves
displayed, enabled by setting UseCurves
* int = obj.GetCurveResolution () - Resolution of the curves
displayed, enabled by setting UseCurves
* double = obj.GetLineOpacity () - Access plot properties
* double = obj.GetFontSize () - Access plot properties
* double = obj. GetLineColor () - Access plot properties
* double = obj. GetAxisColor () - Access plot properties
* double = obj. GetAxisLabelColor () - Access plot
properties
* obj.SetLineOpacity (double ) - Access plot properties
* obj.SetFontSize (double ) - Access plot properties
* obj.SetLineColor (double , double , double ) - Access plot
properties
* obj.SetLineColor (double a[3]) - Access plot properties
* obj.SetAxisColor (double , double , double ) - Access plot
properties
* obj.SetAxisColor (double a[3]) - Access plot properties
* obj.SetAxisLabelColor (double , double , double ) - Access
plot properties
* obj.SetAxisLabelColor (double a[3]) - Access plot
properties
* obj.SetAngleBrushThreshold (double ) - Maximum angle
difference (in degrees) of selection using angle/function
brushes
* double = obj.GetAngleBrushThreshold () - Maximum angle
difference (in degrees) of selection using angle/function
brushes
* obj.SetFunctionBrushThreshold (double ) - Maximum angle
difference (in degrees) of selection using angle/function
brushes
* double = obj.GetFunctionBrushThreshold () - Maximum angle
difference (in degrees) of selection using angle/function
brushes
* int = obj.GetRangeAtPosition (int position, double range
[2]) - Set/get the value range of the axis at a particular
screen position
* int = obj.SetRangeAtPosition (int position, double range
[2]) - Set/get the value range of the axis at a particular
screen position
* obj.ResetAxes () - Reset the axes to their default
positions and orders
* obj.LassoSelect (int brushClass, int brushOperator,
vtkPoints brushPoints) - Do a selection of the lines. See
the main description for how to use these functions.
RangeSelect is currently stubbed out.
* obj.AngleSelect (int brushClass, int brushOperator, double
p1, double p2) - Do a selection of the lines. See the main
description for how to use these functions. RangeSelect is
currently stubbed out.
* obj.FunctionSelect (int brushClass, int brushOperator,
double p1, double p2, double q1, double q2) - Do a
selection of the lines. See the main description for how
to use these functions. RangeSelect is currently stubbed
out.
* obj.RangeSelect (int brushClass, int brushOperator, double
p1, double p2) - Do a selection of the lines. See the main
description for how to use these functions. RangeSelect is
currently stubbed out.
* FreeMat_Documentation
* Visualization_Toolkit_View_Classes
* Generated on Thu Jul 25 2013 17:18:36 for FreeMat by
doxygen_ 1.8.1.1
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