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(This Radar Application will be added in a future RSA Build.)

The Alert Request Application lets you request special notifications from the RPG when certain radar-derived variables exceed user-specified thresholds. For example, you can specify a threshold of 50 decibels (dBZ) within a 15-mile alert area surrounding a major city. Then, an alert message notifies you when the radar detects 50 dBZ echoes.

From the Alert Request Dialog Box you can select the desired radar, edit the Alert Area, and define the categories and thresholds for the Alert Request Messages.

The Alert Request Dialog Box is shown in Exhibit 7.1-1.

This dialog box is opened from the Radar pull-down menu or the kxxx menu and has the following options:
Add

A menu button that opens the Add Request Definitions Dialog Box, shown in Exhibit 7.1-2.

This dialog box contains the following options.

• Category: An options menu that opens a list of available Alert Adaptation Parameters, shown in Exhibit 7.1-3.

• Threshold Codes: This menu opens a list of Thresholds which can be set to flag the desired data. The Threshold options vary depending on the category chosen.

• Request Product: The Yes/No check buttons tell the RPG whether a radar product (image or graphic) will be made available in the Radar pull-down menu. The red Announcement Box appears when Alert Thresholds have been exceeded.

• OK: This menu button adds the specified information to your Alert Request Message.

• Cancel: This menu button closes the Alert Request Definitions Dialog Box without making any changes to the category and threshold settings.

Remove

A menu button that removes a selected radar product from the Alert Request List.

RPG

This options menu opens a list of available RPGs. You can send a request to only one RPG at a time. There are two Alert Areas for each radar. When a new RPG is selected, the large display pane is cleared and the Alert Area and category/threshold settings for that RPG are displayed.

Clear

This menu contains options to clear products or Alert Areas for the currently selected RPG and Alert Area, or to clear globally. A Global Clear operation clears all product and Alert Area settings for all radars.

Alert Area #1 and #2

These radio buttons are used to toggle on an Alert Area. Once you select an area, it is displayed in the large pane, and the category/threshold settings for that area are displayed in the Alert Request Dialog Box.

Send Request

This menu button submits the Alert Request to the selected RPG and saves the current Alert Area and threshold settings.

Status messages appear at the bottom of the Alert Request Dialog Box in the Radar Status Bar to notify you that your request was sent. When the radar detects your specified thresholds, a red banner message automatically appears on the display.

Save

The Save menu button saves the current radar products, threshold settings, and Alert Areas for the selected RPG.

Revert

The Revert menu button opens the Revert Dialog Box, which confirms your intent to restore the previous Alert Areas and category and threshold settings to the display. When you select OK, the display clears and the previously saved Alert Areas and category/threshold settings are restored and displayed.

Load Area

This menu button displays either Alert Area 1 or Alert Area 2 - whichever has the check button turned on. Once an Alert Area is displayed, you can modify it using the following information.

• Editing the Alert Area: Editing the Alert Area involves the use of the pop-up menu over the large display pane. (Refer to Section 2.4 for more information on pop-up menus.)

Once you have displayed Alert Area 1 or Alert Area 2, the legend indicates whether the graphic is editable. Clicking Mouse Button 2 on the legend makes the selected area editable. Pressing and holding Mouse Button 3 over the display opens the pop-up menu. In addition to the commonly available options, the options specifically added for Alert Area editing are Select Location and Select Area.

- Select Location: This option places an Alert Cell, shown in Exhibit 7.1-4, at the cursor location.

Clicking Mouse Button 3 in the large display pane places Alert Cells over the graphic at the location of the mouse pointer. To remove cells, click Mouse Button 3 over the cells you wish to remove.

- Select Area: This Menu option allows you to choose an area using a Rectangle Tool (responds like a stretch "rubberband" tool) that is activated from a pop-up menu. Refer to Exhibit 7.1-5.

The rectangle automatically fills in or clears Alert Cells, depending on whether the initial selection point is empty or has a dot in it.

Another way to select an area is by holding the Shift Key on the Keyboard while pressing Mouse Button 3 to obtain the Stretch Rectangle Tool.

Exit

Exit is the menu button that closes the Alert Request Dialog Box. If you have not sent a request, a Warning dialog box appears and gives you the options to cancel and return to the editor, save before exiting, revert before exiting, or to send a request and save the settings before exiting.

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