DEFINING AND DISPLAYING A "ZONE".

  1. CREATING AND INSERTING ZONES INTO A SCENARIO.

To create a zone use the Data-Driven Overlays option. This will allow the user to define and save for later display line overlays anywhere in the world. During all FORCES modes (including runtime and Mission Planning) any overlays created and stored in this manner can be drawn on the map screen using the Data-Driven Overlays interface. These overlays can be created though the Edit Overlays interface, which can be accesses by selecting: "System Controls" -> "Debug Options" -> "Edit Overlays". To use this function you need to either select the "Load New Overlay" or the "New Line Overlay" option. The Load New Overlay will generate a list of currently defined line overlays ( see interface ) to choose from. The Load New Overlay selection will permit the user to create a new overlay from scratch.

In either case, the resultant interface will allow the user to input the following information:

Description & Category - These are free format fields that allow the user to specify how the overlay is to be referenced from the "data Driven Overlays" interface. This interface will first let the user select the line overlay categories and then will let him select the specify line overlay(s) to be drawn based upon the description provided here. There are no restrictions on either field; if you want to start a new category just type in the new name here and the new category will show up on the "Data Driven Overlay" interface after the line overlay is saved. Likewise, if all lines of a category are deleted that category option will no longer show up as an option. Note that is is possible to simultaneously display line overlays from different categories on the map.

Line Thickness, Type and Color - Self Explanatory except to note that line overlays ALWAYS are drawn in magenta when being edited. They will show up in the appropriate color after being saved and then drawn using the "Data Driven Overlay" interface.

Data for Line Groups - Line overlays are defined in terms of line groups. Each line group consists of a series of location points. Lines are drawn contiguously between the points within a line groups. Line groups are not connected (unless the user selects the same point in two line groups). This permits the user to define series of noncontinous line sets, as would be the case when drawing a road network. Each line group can have a name (e.g. US 24). This name is optional and used only for user convenience when editing the line groups. There's an option to create a new starting point. Alternately, each line point has an option button permitting the user to delete the current line point, insert another point right after the current one within the same line group, or select a new location for the point by clicking on the map. The user can also update the location of any point by just typing in new latitude & longitude values. Remember to save the new data - it's not done automatically.

Most of the buttots' functionality has already been covered, except for the Delete Entire Overlay button. This will delete all data stored for the current overlay. Naturally it only works if data on an overlay is currently loaded.

II. CREATING A SPECIFIC ZONE.

A. USER REQUIREMENTS:

Overall:

User Task: Easily create a Zone (No Fly, Keep Out, Restricted etc.) in the defined dimensions/shape and color AND insert the zone in the proper geographical location.

Assumption: The Zone created will normally require that it be of a specific size, shape and location.

B. SUGGESTED IMPROVEMENTS TO CURRENT METHOD:

If zone is in the shape of a geographical figure (circle, square, rectangle, triangle):

1. Provide user the capability to draw a zone on a graphics type form (board) equipped with a scale (NMs etc). Then, label the zone; specify the Lat/Long; and transfer it to the map automatically. Also, the Lat/Long(s) entered could be identified/marked "on the drawing board" - e.g. on a square the top left corner could be labeled "25.0N/35.0E" . When sent to the map the system would place the top left corner of the zone on the Lat/Long. The same method could be employed where the center of a circle was labeled.

Note: a similar method is currently used to create icons.

If the shape, size and exact location of the zone is not required (free style creation):

1. The "drawing board" option explained above could also be utilized for creating a "free style" drawn zone.

2. The existing method could be used with corrections and/or changes.

IV. HOW TO MODIFY ROUTE WHEN THE SELECTED ROUTE CROSSES OVER A NO FLY AREA:

1. Select: "Scenario Defn"

a. Select: "Route Defn"

1) On Pick Route Form turn on ("Display" button) routes until the route that crossed over the no fly zone appears on map. Turn off all other routes.

2) Click on "Review" button to get Route Data Form.

3) Highlight Leg #1.

4) Click on "Insert Leg at Selection" button. A Leg #2 will appear with a duplicate Lat/Long of Leg #1.

5) Highlight and click on Leg #2 to get the Leg Data Form to appear.

6) Select "Get Location from Map" button. Click on map at the point you want Leg #2 to end to avoid the No Fly Zone.

7) Click on "Save Data". The new Leg #2 and the original Leg #2 will appear on the map.

8) Click on Leg #3 to get the Leg Data Form to appear. Select "Get Location from Map" button. Select the location by using the new Leg #2 end point as the selection point and click on it. Click on "Save Data". The new Leg #3 and the original Leg #3 will appear on the map.

9) If the route now clears the No Fly Zone, exit the "Leg Data" and "Route Data" forms. The modified route will now appear on the map.

10) To recheck the new route, select "Route Defn" again and activate/deactivate the "Display" button for that route.