VO Covariance
Set or modify Covariance graphics properties (Deprecated Command)
Syntax
VO <VehObjectPath> Covariance {CovarOption} <Parameters>
This command is DEPRECATED and has been replaced by:
VOPositionCovarianceDescription
This command was deprecated in STK 11.7, it should no longer be used. Go to: VOPositionCovariance, for the new command.
The VO Covariance commands enables you to define the graphical display of a 3D ellipsoid.
Valid values for {CovarOption} <Parameters> are:
| {CovarOption} | <Parameters> | Description |
|---|---|---|
| Scale | <ScaleValue> | Uses the specified scale value to directly size the contour. Enter a value between 0.0 and 5.1 |
| UseProbability <ProbValue> | Uses the specified percentage of probability encompassed by the ellipsoid to indirectly size the contour. Enter a value between 0.0 and 99.9 | |
| Basic | {AttrOption} <AttrValue> [{AttrOption2} <AttrValue2>...] | To turn on the display of covariance graphics and assign graphics attributes. {AttrOption} and <AttrValue> are described in the table below. |
| Intervals | {On | Off} | Turn on or off the use of time intervals during which covariance graphics will display. |
| Load "<Filepath\Filename.int>" | Clear the list of display intervals for covariance graphics, and replace them with the intervals specified in the interval file.
"<Filepath\Filename.int>" can be the path to a file on your local drive or the path to a file on an SDF server. See Specifying Paths for "<SDFFilePath>" syntax information. | |
| Import "<TimeComponent>" | Add the intervals specified in the Interval or Interval List "<TimeComponent>" to the list of display intervals for covariance graphics.
For information about "<TimeComponent>" see Component Specification. | |
| Add <NumIntervals> "<StartTime>" "<StopTime>" ["<StartTime>" "<StopTime>"...] [{AttrOption} <AttrValue>...] | Add time intervals during which covariance graphics will display to the list of existing intervals and assign their graphics attributes. {AttrOption} and <AttrValue> are described in the table below. | |
| Replace <NumIntervals> "<StartTime>" "<StopTime>" ["<StartTime>" "<StopTime>"...] [{AttrOption} <AttrValue>...] | Replace existing interval list with input intervals. {AttrOption} and <AttrValue> are described in the table below. | |
| Remove "<StartTime>" "<StopTime>" | Remove a single interval. | |
| Clear | Remove all intervals and turn interval graphics off. | |
| IntervalDefault | {AttrOption} <AttrValue> [{AttrOption2} <AttrValue2>...] | Set the default attributes, or the display attributes that will be assigned to times between the specified time intervals. {AttrOption} and <AttrValue> are described in the table below. |
{AttrOption} <AttrValue> can be:
| {AttrOption} <AttrValue> | Description |
|---|---|
| Show {On | Off} | Set the option On or Off. |
| Color {Color} | For valid {Color} options see Common Options. |
| LineWidth <Width> | Indicate a pixel width value between 1.0 and 10.0. |
| Translucency <Value> | Enter a value between 0 and 100 for the transparency. |
Examples
VO */Satellite/attSat Covariance Scale 4.96
VO */Satellite/attSat Covariance Scale UseProbability 34.12
VO */Satellite/attSat Covariance Basic Show On Color blue LineWidth 4
VO */Satellite/attSat Covariance Basic Show On Color yellow Translucency 50
To turn on the use of intervals for covariance graphics:
VO */Satellite/attSat Covariance Intervals On
To turn off the use of intervals:
VO */Satellite/attSat Covariance Intervals Off
VO */Satellite/CovarSat Covariance IntervalDefault Show Off Color blue LineWidth 2
To remove all intervals:
VO */Satellite/attSat Covariance Intervals Clear
To replace the existing intervals with the intervals in the Target1.int file:
VO */Satellite/attSat Covariance Intervals Load "c:\stk\project1\Target1.int"
To add two 1 hour and 20 minute intervals--one beginning at 12:38 a.m. and ending at 1:58 a.m. and the other beginning at 5:38 a.m. and ending at 6:58 a.m.:
VO */Satellite/attSat Covariance Intervals Add 2 "1 Jan 2001 00:38:00.00" "1 Jan 2001 01:58:00.00" "1 Jan 2001 05:38:00.00" "1 Jan 2001 06:58:00.00"
To remove the interval beginning at 12:40 a.m. and ending at 1:00 a.m.:
VO */Satellite/attSat Covariance Intervals Remove "1 Jan 2001 00:40:00.00" "1 Jan 2001 01:00:00.00"
VO */Satellite/attSat Covariance Intervals Replace 2 "1 Jan 2001 00:38:00.00" "1 Jan 2001 01:58:00.00" "1 Jan 2001 05:38:00.00" "1 Jan 2001 06:58:00.00"
To add two 1 hour and 20 minute intervals that will display as a green line of 3 pixel width--one beginning at 12:38 a.m. and ending at 1:58 a.m. and the other beginning at 5:38 a.m. and ending at 6:58 a.m.
VO */Satellite/attSat Covariance Intervals Add 2 "1 Jan 2001 00:38:00.00" "1 Jan 2001 01:58:00.00" "1 Jan 2001 05:38:00.00" "1 Jan 2001 06:58:00.00" Color green LineWidth 3
To add two 1 hour and 20 minute display intervals for covariance graphics that will display as a magenta line of 2 pixel width--one beginning at 2:38 a.m. and ending at 3:58 a.m. and the other beginning at 7:38 a.m. and ending at 8:58 a.m.
VO */Satellite/attSat Covariance Intervals Add 2 "1 Jan 2001 02:38:00.00" "1 Jan 2001 03:58:00.00" "1 Jan 2001 07:38:00.00" "1 Jan 2001 08:58:00.00" Color magenta LineWidth 2
Return message
Group membership
This command belongs to the following group(s):
Version
11.7