The grid animation controls allow you to view precipitation grids for the time window you have chosen. The controls are located on the Animate dialog (Figure 1) which is accessible from the Visualization Module. Choose Animate from the View menu to display the Animate dialog. The dates above the slider bar show the start and end time of the grids that are visible in the display window. The date and time shown beneath the centered controls indicate the date and time of the data currently being displayed. A slider bar and video-player-style buttons control animated playback. The slider allows you navigate the active precipitation gridset for a specific time during the time window. With these playback controls, you can play an animation of the active precipitation gridset from the beginning to the end of the Visualization time window.
The video-player-style buttons (Figure 1) function as follows:
Skip to Beginning: Sets the slider at the beginning of the time window and displays the status of data at that time.
Step Back: Steps the image back one time interval.
Pause: Pauses playback.
Stop: Stops playback.
Play: Plays the animation, one time interval at a time, starting at the location of the slider.
Step Forward: Steps the image forward one time interval.
Fast Forward: Plays through the animation in fast forward mode.
Skip to End: Moves the slider and the image to the status at the end of the time window.
In order for playback to occur, you must define the coordinate system for both the watershed layers and the gridset and there must be data present for the time window specified. If no grid is available for the time step, the label centered over the grid animation controls will end with No Data.
Use CWMS-Vue to check for available grids in $CWMS_HOME/dated/db/grid/precip.YYYY.MM.dss. You may need to run gageInterp or your grid-loading program to populate the DSS files for this time interval.
