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StateVectorMFD is basic MFD for displaying a vessel's state vectors at the current time and at a some other time relative to the present time.
 
StateVectorMFD is basic MFD for displaying a vessel's state vectors at the current time and at a some other time relative to the present time.
 
The MFD uses the [[Kepler Orbital Simulation Toolkit]] (KOST) to convert the current state vectors to orbital elements and then perform time propagation along those elements. [http://en.wikipedia.org/wiki/Kepler%27s_laws_of_planetary_motion Kepler's Laws] are then solved numerically to obtain the state vectors for the future time.
 
  
 
== Operation ==
 
== Operation ==
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Load the MFD by pressing the MFD "SEL" button and select "State Vector". The MFD will show the current state vectors in a column on the left hand side and the state vectors for a future time in a column on the right hand side.
 
Load the MFD by pressing the MFD "SEL" button and select "State Vector". The MFD will show the current state vectors in a column on the left hand side and the state vectors for a future time in a column on the right hand side.
  
See [[#Configuration|Configuration]] for the default settings that are used when the MFD is first loaded.
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See below for the default settings that are used when the MFD is first loaded.
  
 
=== Changing T+ ===
 
=== Changing T+ ===
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=== Changing the Reference Body ===
 
=== Changing the Reference Body ===
  
Press the REF button and select a new reference body.
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Press the REF button and select a new reference body. Default value: current major gravitational influence.
  
 
=== Changing the Numerical Notation ===
 
=== Changing the Numerical Notation ===
  
Press the NOT button to toggle the numerical notation between SI prefixes and exponential form.
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Press the NOT button to toggle the numerical notation between SI prefixes and exponential form. Default value: SI prefixes.
  
 
=== Non-spherical Gravity Effects ===
 
=== Non-spherical Gravity Effects ===
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=== Saving/Loading Scenarios ===
 
=== Saving/Loading Scenarios ===
  
This MFD saves its state to the scenario file so all settings will be restored when restarting the scenario. Also included is saving/restoring the settings for any other vessels that have been used with StateVectorMFD in the scenario even though those vessels do not have the focus at the time of scenario being saved.
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This MFD does not save or load its state to the scenario file at this stage so all settings (reference body, T+) will be reset when reloading the scenario.
  
 
== Coordinate Systems ==
 
== Coordinate Systems ==
  
 
The state vectors are displayed in the Orbiter left-hand ecliptic coordinate system (+X - sun direction at vernal equinox, +Y - ecliptic north). Support for other systems may be added in the future.
 
The state vectors are displayed in the Orbiter left-hand ecliptic coordinate system (+X - sun direction at vernal equinox, +Y - ecliptic north). Support for other systems may be added in the future.
 
== Configuration ==
 
 
A configuration file (StateVector.cfg) in located in OrbiterDirectory\Config contains the settings for the MFD. The following items can be configured.
 
 
=== Colours ===
 
 
NOW_COLOUR - colour for the current state vectors in the left-hand column.
 
 
T_PLUS_COLOUR - colour for the predicted state vectors in the right-hand column.
 
 
See the config file for valid colour values.
 
 
=== Numerical Solver ===
 
 
MAX_RELATIVE_ERROR - the maximum relative error in the mean anomaly when solving Kepler's equation. Smaller number = more accurate.
 
 
MAX_ITERATIONS - the maximum number of iterations used when solving Kepler's equation. Larger number = more accurate.
 
 
=== Defaults ===
 
 
T_PLUS_TIME - the default T+ value (in seconds).
 
 
NOTATION - the default numerical notation.
 
  
 
== Credits ==
 
== Credits ==

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