A 2D ellipse, described by a 2x2 covariance matrix.
The relation between the multivariate Gaussian confidence interval and the "quantiles" in this class is:
The ellipse will be always centered at the origin. Use mpMovableObject::SetCoordinateBase to move it.
Definition at line 1541 of file mathplot.h.
#include <mrpt/otherlibs/mathplot/mathplot.h>
Public Member Functions | |
mpCovarianceEllipse (double cov_00=1, double cov_11=1, double cov_01=0, double quantiles=2, int segments=32, const wxString &layerName=wxT("")) | |
Default constructor. | |
virtual | ~mpCovarianceEllipse () |
double | GetQuantiles () const |
void | SetQuantiles (double q) |
Set how many "quantiles" to draw, that is, the confidence interval of the ellipse (see above). | |
void | SetSegments (int segments) |
int | GetSegments () const |
void | GetCovarianceMatrix (double &cov_00, double &cov_01, double &cov_11) const |
Returns the elements of the current covariance matrix: | |
void | SetCovarianceMatrix (double cov_00, double cov_01, double cov_11) |
Changes the covariance matrix: | |
Protected Member Functions | |
void | RecalculateShape () |
Called to update the m_shape_xs, m_shape_ys vectors, whenever a parameter changes. | |
Protected Attributes | |
double | m_cov_00 |
The elements of the matrix (only 3 since cov(0,1)=cov(1,0) in any positive definite matrix). | |
double | m_cov_11 |
double | m_cov_01 |
double | m_quantiles |
int | m_segments |
The number of line segments that build up the ellipse. |
mpCovarianceEllipse::mpCovarianceEllipse | ( | double | cov_00 = 1 , |
double | cov_11 = 1 , |
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double | cov_01 = 0 , |
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double | quantiles = 2 , |
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int | segments = 32 , |
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const wxString & | layerName = wxT("") |
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) | [inline] |
Default constructor.
Initializes to a unity diagonal covariance matrix, a 95% confidence interval (2 sigmas), 32 segments, and a continuous plot (m_continuous=true).
Definition at line 1547 of file mathplot.h.
References mpLAYER_PLOT.
virtual mpCovarianceEllipse::~mpCovarianceEllipse | ( | ) | [inline, virtual] |
Definition at line 1566 of file mathplot.h.
void mpCovarianceEllipse::GetCovarianceMatrix | ( | double & | cov_00, |
double & | cov_01, | ||
double & | cov_11 | ||
) | const [inline] |
Returns the elements of the current covariance matrix:
Definition at line 1583 of file mathplot.h.
double mpCovarianceEllipse::GetQuantiles | ( | ) | const [inline] |
Definition at line 1568 of file mathplot.h.
int mpCovarianceEllipse::GetSegments | ( | ) | const [inline] |
Definition at line 1579 of file mathplot.h.
void mpCovarianceEllipse::RecalculateShape | ( | ) | [protected] |
Called to update the m_shape_xs, m_shape_ys vectors, whenever a parameter changes.
void mpCovarianceEllipse::SetCovarianceMatrix | ( | double | cov_00, |
double | cov_01, | ||
double | cov_11 | ||
) | [inline] |
Changes the covariance matrix:
Definition at line 1592 of file mathplot.h.
void mpCovarianceEllipse::SetQuantiles | ( | double | q | ) | [inline] |
Set how many "quantiles" to draw, that is, the confidence interval of the ellipse (see above).
Definition at line 1572 of file mathplot.h.
void mpCovarianceEllipse::SetSegments | ( | int | segments | ) | [inline] |
Definition at line 1578 of file mathplot.h.
double mpCovarianceEllipse::m_cov_00 [protected] |
The elements of the matrix (only 3 since cov(0,1)=cov(1,0) in any positive definite matrix).
Definition at line 1603 of file mathplot.h.
double mpCovarianceEllipse::m_cov_01 [protected] |
Definition at line 1603 of file mathplot.h.
double mpCovarianceEllipse::m_cov_11 [protected] |
Definition at line 1603 of file mathplot.h.
double mpCovarianceEllipse::m_quantiles [protected] |
Definition at line 1604 of file mathplot.h.
int mpCovarianceEllipse::m_segments [protected] |
The number of line segments that build up the ellipse.
Definition at line 1608 of file mathplot.h.
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