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Flight Path Tutorial: Step Five
How to Choose the Time Range and Animate
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The time range shown below the map limits the valid times which can be selected and defines the time range which will be animated. To change the time range or animation properties, left click on the Configure->Time menu at the top of the main window to open the Time & Animation Configuration window.
The Time & Animation Configuration window has two tabs. The first, Time, is used to control the visible time range. The second, Animation, is used to control the length and speed of animation. The Cancel button closes the dialog without making any further changes, while the Apply buttoncommits all changes.
- Time Tab
The Time tab allows configuration of the number of tick marks on the time slider and whether or not the sliding button snaps onto the nearest tick mark. It also controls whether the application is in Archive Mode or Real-time Mode.
In Real-time Mode (the default), the application automatically looks for new data on the interval specified in the Update every pulldown menu. In this mode, there are several options for the range and selected time in the time slider. By default, the selected time is always now, meaning that it moves forward as time progresses; New data are selected as they become available. Other options are to have the selected time stay Fixed at its current setting or to have the selected time always be Offset from the now time. The Date Range is the time range shown in the time selector and the time range over which animation will take place. By default this range moves forward as time progresses, always showing the same number of hours before now and after now. Selecting a Fixed start time instead, allows the range to be fixed from a Fixed start time to a Max date range.
In Archive Mode, the application does not automatically look for new data or change the selected time. In this mode, the Start time and End time must be explicitly set.
- Animation Tab
The Animation tab allows configuration of the number of frames used to represent the time range and the frame delays.
By default, the Number of Frames is equal to the number of tick marks in the time range. Sliding the selector left or right increases or decreases, respectively, the number of frames. The Frame interval automatically updates to show the amount of time between frames. The
Number of Frames can also be set by typing a number into the Frame interval field and pressing the Enter key.
The Delay between each frame and the delay between the end of the loop and its automatic restart can also be set. The Enter key must be pressed for changes to be registered.
- Animation Control Buttons
The animation buttons to the left of the time slider in the main window
are used to launch and control animation. During animation, each frame's selected time is shown in the time slider.
The upper left button is used to step backwards one frame at a time, while the upper right button is used to step forwards one frame at a time. The lower left button starts animation going backwards in time, while the lower right button starts animation going forwards in
time. The lower center button starts animation in "ping-pong" mode, alternately going forwards then backwards in time. When animation is in progress, the upper center button may be used to stop the animation.
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