Edit / Units...   ()

Summary

Edits the units of the frontmost simulation.

Description

When you select this command, a dialog will be displayed showing the units of the frontmost simulation, and allowing you to change one or more of them. If you accept the input dialog, AstroGrav will change the units as specified, and each of the frontmost simulation's open windows will be updated to reflect the change.

The units that can be edited and the data elements that they apply to are as follows.

1. Radius is a unit of length that applies to the following data elements.
   • Physical Elements
     • Radius

2. Luminosity is a unit of power that applies to the following data elements.
   • Physical Elements
     • Luminosity

3. Mass is a unit of mass that applies to the following data elements.
   • Physical Elements
     • Mass

4. Position is a unit of length that applies to the following data elements.
   • Absolute Elements
     • Absolute Position X
     • Absolute Position Y
     • Absolute Position Z
   • Structure Elements
     • Distance
   • Rectangular Elements
     • Orbital Position X
     • Orbital Position Y
     • Orbital Position Z
   • Orbital Elements
     • Semi-Major Axis

5. Velocity is a unit of velocity that applies to the following data elements.
   • Absolute Elements
     • Absolute Velocity X
     • Absolute Velocity Y
     • Absolute Velocity Z
   • Structure Elements
     • Speed
   • Rectangular Elements
     • Orbital Velocity X
     • Orbital Velocity Y
     • Orbital Velocity Z

6. Period is a unit of time that applies to the following data elements.
   • Physical Elements
     • Period

7. Angle is a unit of angle that applies to the following data elements.
   • Orbital Elements
     • Orbital Inclination
     • Asc Node Longitude
     • Peri Longitude
     • True Longitude
   • Other Elements
     • Eccentric Longitude
     • Mean Longitude
     • True Anomaly
     • Eccentric Anomaly
     • Mean Anomaly
     • Peri Argument

8. Date/Time is a date or unit of time that applies to the current time as shown on the status bar. The relationship between date and time is such that time zero translates to Julian date zero, which is noon Universal Time (UT) on Monday, January 1, 4713 BC. This can be useful with Solar System simulations, because the Julian date gets displayed on the status line when the date/time unit is set to days.

See Also:

• Edit / Undo () which undoes the latest change to the frontmost simulation.

• Edit / Redo () which redoes the most recently undone change to the frontmost simulation.

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