GPCorrelation

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How to call it

For using the GPCorrelation class, the developer has only to create such an object as is:

gpCor = new GPCorrelation();

or:

gpCor = new GPCorrelation("widgetId", "MyMatrix");

Display

We will get:

By selecting the type of parameters, we may enter data for correlation/covariance matrix for Keplerian/Cartesian/LOF cartesians parameters. The different displays will be:

• In case of Keplerian parameters:

• In case of cartesian parameters:

• In case of LOF cartesian parameters:

So we may have a covariance matrix rather than a correlation one:

If the initial correlation (resp. covariance) matrix is not null, a specific pop-up window will appear to ask for the type of conversion. A bit as for the GPOrbit widget, it will be possible to do this conversion between correlation and covariance matrices (but not between the different type of parameters) using a kind of “pivot” notion.

=>

How to use it

Therei no exactly corresponding correlation/covariance matrices inside PATRIUS but GENOPUS gives some utility classes and methods to use them.

...

How it is stored

Here is an example of the XML format:

  <!--Type of matrix:-->
  <String name="matrixType">CORRELATION</String>
  <!--Type of parameters:-->
  <String name="type">LOF</String>
  <!--LOF types:-->
  <String name="lofType">LVLH</String>
  <!--Absolute velocity:-->
  <Boolean name="velocityType">true</Boolean>
  <Real name="Sigma_x" unit="m">1.0E1</Real>
  <Real name="Rho_x/y">5.0E-1</Real>
  <Real name="Rho_x/z">0.0E0</Real>
  <Real name="Rho_x/vx">0.0E0</Real>
  <Real name="Rho_x/vy">0.0E0</Real>
  <Real name="Rho_x/vz">0.0E0</Real>
  <Real name="Sigma_y" unit="m">2.0E4</Real>
  <Real name="Rho_y/z">0.0E0</Real>
  <Real name="Rho_y/vx">0.0E0</Real>
  <Real name="Rho_y/vy">0.0E0</Real>
  <Real name="Rho_y/vz">0.0E0</Real>
  <Real name="Sigma_z" unit="m">3.0E4</Real>
  <Real name="Rho_z/vx">0.0E0</Real>
  <Real name="Rho_z/vy">0.0E0</Real>
  <Real name="Rho_z/vz">0.0E0</Real>
  <Real name="Sigma_vx" unit="m/s">1.0E2</Real>
  <Real name="Rho_vx/vy">0.0E0</Real>
  <Real name="Rho_vx/vz">0.0E0</Real>
  <Real name="Sigma_vy" unit="m/s">2.0E2</Real>
  <Real name="Rho_vy/vz">0.0E0</Real>
  <Real name="Sigma_vz" unit="m/s">3.0E2</Real>