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dual_dop − a Tcl package for drawing dual doppler lobes in visky. |
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2.0.1 |
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The dual_dop package augments visky with the ability to draw dual doppler lobes, as described in Davies-Jones, Robert P., Dual-Doppler Radar Coverage Area as a Function of Measurement Accuracy and Spatial Resolution, Journal Of Applied Meteorology, 18, 1229,1233. |
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When it loads, the dual_dop package adds a Dual_Doppler menu to the main menu bar with the following selections: |
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Add |
Creates a dialog box in which user enters information for a new pair of radars. User will be asked for a name for the pair, which can be any string, and locations and nominal ranges for each radar. If input is satisfactory, selecting ok will add the radar pair to the data base and make the radars and dual doppler lobes visible in the most recent map, if available. |
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Edit |
This cascade menu has an entry for each radar pair created with the Add menu. Selecting one creates a dialog box prompting for new radar locations and ranges. A pair name cannot be changed. Radars and lobes will be updated in any maps displaying them. |
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Delete |
This cascade menu has an entry for each radar pair created with the Add menu. Selecting one deletes the pair, all associated menus and bindings, and removes the radars and lobes from all displays. |
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Crossing |
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This cascade menu that selects the minimum crossing angle for dual doppler lobes. |
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The dual_dop package also adds a Dual_Doppler menu to each map. It will have a selection for each pair of radars. Each selection will lead to a cascade menu with the following sub-selections: |
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Show radars |
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Shows the radars in the map. The dual doppler lobes may or may not be visible. When the radars are visible, this selection becomes Hide radars. |
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Show lobes |
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Shows the radars and dual doppler lobes in the map. When the lobes are visible, this selection becomes Hide lobes. |
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Radars in the display can be dragged with the mouse. At mouse up, the associated dual doppler lobes and range rings are updated. Each pair of radars has a label with information about the radars and lobes. Double-clicking on the label with button 1 brings up a dialog box in which radar locations and ranges can be entered explicitly, just like the Edit selection in the main menu. |
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File parameter_directory/dual_dop stores options and runtime information between sessions. See the visky (n) man page for more information on how the parameter directory is identified and used. parameter_directory/dual_dop is a plain text file. It can be edited before loading the package to set defaults. The file is automatically updated with the current state when the package unloads, usually when the visky application exits. |
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Gordon Carrie <user0@tkgeomap.org> |