The velocity rose features (available from EEMS10EEMS11.42) allows the user to display the speed and direction distribution of a given cell over a user-defined period of time.
This feature is available from the 2DH View, from which a velocity layer must be added, and the active mode turned on as presented in Figure 1. The user is then able to select a location of interest, and the information of the selected cell will be presented in a yellow box.
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Figure 1. The Velocity layer.
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The velocity rose of the select cell is presented in Figure 3. The location of the cell being displayed and the time period are shown at the top of the plot. The velocity rose can be attached to the 2DH view or can be floating as a separate window.
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Figure 3. Velocity Rose of a selected cell.
RMC on the plot of velocity rose and select Settings (shown in Figure 3). The Rose Plot Utility provides options for editing the labels, setting the scale, and adjusting the sectors. The user may also save the defined rose plot format and reload it at a later time , or to apply the same formatting style on another cell, using the Save and Load options (Figure 4). In addition, it is also possible to export the rose plot as a bitmap and Windows metafile image.
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Figure 4. Settings of the rose plot.
Multiple velocity roses may be displayed by selecting multiple cells in 2DH View as shown in Figure 5 . In the main toolbar, the user can check the Rose Frames option to display a list of rose plots available with detailed information of about the location and time period.
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Figure 5. Multiple Velocity Rose Plots.