Threat Analysis widget

Public safety personnel and first responders are tasked with identifying safe distances and zones when planning events. For example, should an explosion occur at a location susceptible to attack, personnel want to be prepared with an understanding of what perimeters to set up, and what areas to evacuate.

Configure the Threat Analysis widget

This widget can be set to open automatically when an app starts. Click the Do not open this widget when the app starts button on the widget to turn on the option to open the widget automatically. (For widgets you need to add to the app first, you can make this setting after configuring the widget.)

1. Hover over the widget and click the Configure this widget button to open the configuration window.

   Note:

   If you need to add the widget to the app first, click a widget placeholder on the Widget tab. In the Choose Widget window that opens, select the widget and click OK.

2. Optionally click the Change widget icon button to replace the widget icon with your own image.

   A file explorer window appears, allowing you to select a local image file to use as the widget icon.

3. On the Threat Type tab, which displays tables for two threat type categories, edit threat types or add custom types.
   • Point to the Actions column for a threat type in the table for buttons to edit, delete, or re-arrange the display sequence.
   • Click Add Threat Type to add a threat type with custom name and distance values.
4. On the Symbology tab, configure symbology for Chemical Threat or LPG Threat.
   • Outline—Choose the color, transparency, and style.
   • Fill—Choose the color, transparency, and style.
5. On the General tab, configure the following settings:
   • Select an operational layer for results—Choose from a list of editable polygon feature layers in the current web map to which users can save results.

     Note:

     The list only includes layers from your organization and only if the layer can be edited. If the map uses polygon feature layers from another organization or that aren't editable, they do not appear in the list.

   • Select a default unit of measure—Specify Feet or Meters as the default units for the distance values that appear in Mandatory Evacuation Distance and Safe Evacuation Distance user settings.
6. Click OK to save your settings and close the Configure Threat Analysis window.

Use the Threat Analysis widget

You can create and change the appearance of evacuation zones in multiple ways.

Change the settings

1. Open the settings window to change the appearance.
2. For Chemical Threat, change the following symbology settings for Mandatory Evacuation Distance or Safe Evacuation Distance.
   • Outline—Choose the color, transparency, and style.
   • Fill—Choose the color, transparency, and style.
3. For LPG Threat, change the following symbology settings for Fireball Diameter or Safe Distance.
   • Outline—Choose the color, transparency, and style.
   • Fill—Choose the color, transparency, and style.

Create evacuation zones

Learn how to create evacuation zones from the map using fixed locations or existing features, or by interactively selecting locations.

Create zones interactively

You can create evacuation zones interactively by drawing locations on the map.

1. From the Input Location list, choose Interactive.
2. Select either the Point, Polyline, or Polygon drawing tool and draw a feature on the map.
3. From the Threat Type Category list, choose a category.
4. From the Threat Type list, choose a threat type.
5. From the Units list, choose Feet or Meters.
6. Click Create Zones.
7. Optionally click Publish after the zones have been created to save them as a hosted feature layer.

Create zones from fixed coordinates

You can create evacuation zones from fixed coordinates.

1. From the Input Location list, choose Fixed Coordinate.
2. Enter a coordinate in the Threat Location text box and press Enter, or use the Add Threat Location tool to select a location on the map.
3. From the Threat Type Category list, choose a category.
4. From the Threat Type list, choose a threat type.
5. From the Units list, choose Feet or Meters.
6. Click Create Zones.
7. Optionally click Publish after the zones have been created to save them as a hosted feature layer.

Create zones from existing features

You can create evacuation zones by selecting existing features from the map.

1. From the Input Location list, choose From Existing Features.
2. From the Select Feature From This Layer list, choose the layer that contains the features you want to select.

   Note:

   Currently, layers based on feature collections will display in the Select Feature From This Layer list, but the features contained within are not supported as selectable inputs.

3. Click the Extent tool and select features from the map.
4. From the Threat Type Category list, choose a category.
5. From the Threat Type list, choose a threat type.
6. From the Units list, choose Feet or Meters.
7. Click Create Zones.
8. Optionally click Publish after the zones have been created to save them as a hosted feature layer.

Publish evacuation zones

Publish evacuation zones as a hosted feature layer to a portal or organizational account.

1. Type a name for the hosted feature layer in the Published Layer Name text box.
2. Click Publish.
3. In the Sign In window, enter a user name and password.
4. Click OK.