2D Graphics Attributes

2D Graphics Attributes answer three basic questions about an STK object:

• What do you want to show?

• How do you want it to look?

• When do you want it to be seen?

Display options - Global, Local, and Overridable

Display options take the form of check boxes that enable you choose whether or not STK displays a given attribute in the 2D Graphics window. They fall into three categories:

Global - You can (or, in some cases, must) set these at the scenario level for all objects. You can override some global settings locally for specific objects.
Local - You can only set these for a given object.
Overridable - You can choose to have individual objects inherit these from the scenario or you can override these options in the object's properties.

By definition, overridable attributes are global.

Overridable display options

The overridable options appear in the following table. You can set them on the scenario's 2D Graphics - Global Attributes page. You can choose to have objects inherit these settings or you can override these options in the object's properties:

• To have an object inherit relevant scenario-level settings, go to the object's 2D Graphics - Attributes properties page and select the Inherit from Scenario check box.
  
• To override scenario-level settings for an object, clear the Inherit from Scenario check box and set the display options shown.

Category	Option	Description
General	Show Labels	If selected, objects appear in the 2D Graphics window with text labels.
Sensors	Show Sensors	If selected, sensor projections appear in the 2D Graphics window.
	See below for local options for a sensor.
Vehicles	Show Ground Tracks / Routes	If selected, ground tracks or routes appear. "Ground Tracks" refers to satellites, launch vehicles, and missiles. "Routes" refers to ships, aircraft, and ground vehicles.
	Show Orbits / Trajectories	This option affects only the perspective and orthographic map projections. If selected, satellite orbit tracks and launch vehicle and missile trajectories appear. This setting applies to satellites, launch vehicles, and missiles only.
	Show Ground Markers / Route Marker	If selected, the marker for a vehicle appears. "Ground Markers" apply to satellites, launch vehicles, missiles, ships, aircraft, and ground vehicles. "Route Marker" is the local name of the field for ships, aircraft, and ground vehicles.
	Show Orbit Markers / Trajectory Marker	This option affects only the perspective and orthographic map projections. If selected, the markers for satellites, launch vehicles, and missile trajectories appear. "Orbit Markers" refers to satellites, launch vehicles, and missiles. "Trajectory Marker" is the local name of the field for launch vehicles and missiles.
	Show Elset Number	This applies only to SGP4 satellites with two or more two-line element sets. If selected, element set numbers for the satellites appear.
Area Targets	Show Centroids	If selected, the area target's centroid appears in the 2D Graphics window.
	See below for local options for an area target.
Planets	Show Orbits	This option affects only the perspective and orthographic map projections. If selected, planet orbit tracks appear.
	Show Inertial Positions	This option affects only the perspective and orthographic map projections. If selected, the position of the planet appears in the 2D Graphics window in the Central Body Inertial (CBI) coordinate frame.
	Show Position Labels	If selected, planet labels appear in the 2D Graphics window.
	Show Subplanet Points	If selected, the point directly below the planet appears in the 2D Graphics window.
	Show Subplanet Labels	If selected, a label appears at the location of each subplanet point in the 2D Graphics window.
	See below for local options for a planet.

Other global display options

You can only set the following options at the scenario level; you cannot override them locally (in object properties).

Category	Option	Description
Access	Static Highlight	If selected, access is highlighted in the 2D Graphics window as a thick line overlaying the ground tracks for a vehicle or a vehicle sensor and as an X for a facility, place, target, or sensor that is attached to a facility, place, or target.
	Animate Highlight	If selected, a box appears around each object during access.
	Show Animate Line	If selected, a line appears on the 2D and 3D Graphics windows between the two access objects to show during animation when they are accessible to one another. Use the Line Style drop-down to select the style of the Animate Line. Use the Line Width drop-down to select the width of the Animate Line.
Map Display Options	Allow Animate Update	If selected, STK runs an animation cycle for the current time after you click Apply or OK on any STK property page so that time-dependent graphics are immediately updated. Otherwise, you must click Reset on the Animation toolbar to update time-dependent graphics displays such as sensor fields of view.

If the Allow Animate Update option is selected and the scenario contains many objects, the time it takes to update the 2D Graphics window may impact your work since all objects are reanimated for the current scenario time. In this case, consider clearing the Allow Animate Update check box.

Local display options

You can set the following display options locally for area target, line target, sensor, and planet objects.

Object	Option	Description
Area Target	Show Boundary Points	If selected, the individual perimeter points used to define the boundary of an area target are marked along the area target's boundary.
	Fill	If selected, the region covered by the area target appears as a filled area. Use the % Translucency text field or slide control to set the translucency of the filled area. You can adjust Translucency from 0 to 100 percent, where 100 percent is invisible.
	Show Bounding Rectangle	If selected, STK constructs a rectangle using the outermost boundaries defined for the area target. The bounding rectangle appears around the actual region covered by the area target.
Line Target	Show Line Points	If selected, STK marks the individual points used to define the line target along the line. The point currently selected in the Path list is accented with a square.
	Show Bounding Rectangle	If selected, STK displays a rectangle using the outermost points defined for the line target as its reference.
Sensor	Fill	If selected, the region covered by the sensor footprint appears as a filled area. Use the % Translucency slide control to set the translucency of the filled area. You can adjust Translucency from 0 to 100 percent, where 100 percent is invisible.
Planet	Orbit Display	If the Show Orbit option is selected for the planet (either locally or inherited from the scenario global settings), select one of the following: OneOrbit - Tells STK to display one full orbit of the planet. Time - Defines the displayed orbit segment in terms of the amount of the orbit traversed by the planet during the selected interval, split evenly between trailing and leading portions. For example, if you specify 14 days, the orbit segment beginning 7 days before epoch and ending 7 days after appears.

Appearance options - Color, Lines, and Markers

There are no global appearance options; all must be set locally for each object. Depending on the object, the following options are available:

Option	Description	Availability
Color	Select the standard or custom color in which to display the object's marker and, if applicable, its pattern or tracks.	All objects
Line Style	Select the type of line to represent the object's pattern or tracks.	Objects that draw something on the Earth's surface, i.e. vehicles (tracks), sensors (patterns), and area targets (patterns or ellipses). Excluded are facilities, targets, planets, and stars.
Line Width	Select the width of the line to represent the object's pattern or tracks.	Same as Line Style
Marker Style	Select the type of marker to represent the object's current position.	All objects except sensors
Pick String	Use this text field to identify an object. This string only appears on the object's graphics. The string appears in the status bar for the 2D Graphics window and after the instance name in the 3D Graphics window.	All vehicles

Although no marker appears for the sensor object itself, you can select one for the sensor boresight.

Interval options - Access, Custom, Component, and Real Time

For a vehicle, you can vary the appearance of graphics attributes (display and attribute options) on the basis of:

• access intervals
• custom intervals
• components
• real-time data states

Intervals for 2D graphics are prioritized from earliest to latest, regardless of whether they are from custom intervals, access intervals, or components.

The Real Time graphics option appears on the Attributes page only if you have selected the Real Time propagator.

You can also set display times for other objects.