Global Risk Data Platform
 Help about Map section 
The interface is divided into the following sections:
1. The main Map Panel
2. The Layers Panel and Legend
3. The Navigation Toobar
4. The Visualization Toobar

Navigation tools
Navigation tools allow you to zoom in and out and pan around maps. These tools are located in two places in the Global Risk Data Platform interface:
1. In the Navigation toolbar
2. In the corners of the Map Panel

Navigation shortcuts
There are some useful tips and tricks for facilitating map navigation:
Shift + Drag Zooms in with any other tool / mode active.
Control + Drag Pans the map with any other tool / mode active.
Mouse-Scroll Zooms in with a forward scroll, or out with a reverse scroll.
Double-Click Zooms in with a forward scroll, or out with a reverse scroll.

Navigation buttons
Button Name Description
Pan Map Drag the map with the mouse at the same zoom level.
Zoom-In Zoom-in by one zoom level.
Zoom-Out Zoom-out by one zoom level.
Zoom to previous extent Zoom to the extent you were previously viewing.
Zoom to next extent After using the Zoom to previous extent button, click to zoom to the next extent.
Zoom to visible extent Click to view the largest possible area.

Navigation controls
Button Name Description
Pan-Step Pans the map in the direction of the arrow by a set step.
Zoom-Slider Zooms the map in (toward +) or out (toward -) by in a single mouse slide (click and drag).
Scale Selector Zooms the map to the selected, predefined scale.

Other tools
Button Name Description
Feature Info Activate this tool, and then click a point on the map to return information about the features at that point.
Draw a Zoom Box Activate this tool, and draw a box on the map to zoom in.
Google Earth Activate this tool, to switch to a globe view using Google Earth (the plugin must be installed on your computer).
Query Activate this tool, and build advanced queries on attributes tables (vector data).

Layer Panel and Legend
The Layer Panel lists each layer currently loaded on the map, and provides both a tool set and context menu for interacting with them.

Layer types
Layers are organized in seven folders:
Overlays: Include any layer added from the local GeoServer or any other remote, WMS server.
Contextual layers:
Exposures: - Human: Intersection between hazard probability at a given severity and population distribution model (Landscan).
- Economical: Intersection between hazard probability at a given severity and Gross Domestic Product distribution model.
Risk: Categories of risk based on both expected annual losses per pixel.
Base layers: Include any layer added from a known tile-map server (Google, Bing, Yahoo, MapQuest, or OpenStreetMap)

Layer tools
Button Name Description
Add Layer Opens a list of available layers for you to add to your map.
Remove Layer Removes the currently selected layer from your map.
Layer Properties Opens the layer properties dialog.

Layer context menu
The Layer context menu opens when you right-click an item in the Layer list.

Its options mirror the Layer Tools (above) with the addition of the Zoom to layer extent option.
As its name implies, this tool zooms the map to the spatial extent of the selected layer.

The map legend displays styling information for any layers in the Overlay list. Its contents are updated automatically as layers are added, removed or re-styled.

Saving a map

Now that you have spent time configuring your map layout (adding, reordering, styling and editing layers, etc.), it might be a good idea to save your layout. Saving your composed map allows you to come back to the current layout without having to redo all of your work.

Save Map Tool
Button Name Description
Save Map Initiates the workflow to save your current map layout.

Click the Save Map button to trigger the process.
A Bookmark URL dialog opens presenting a Permalink to your saved layout.

The Permalink is highlighted in this dialog, so you can quickly Copy and Paste it into any number of locations (Shortcuts, Documents, Emails, etc.)

Publishing a map
The Export Map tool can be used to publish your composed layout as a custom map application that can be embedded on a web page.

Button Name Description
Export Map Initiates the workflow to export your current map layout to a custom web-map widget.

Once your map composition is ready, click on the Export Map button.
A window opens providing you with a code snippet to embed your map application into a web-page template. Copy the code to your clipboard. The Map Size drop-down lists several common map height/width pairs. Alternately, you can enter values in the Height and Width fields directly.

Insert this piece of code is your HTML document and then it will be available in your web-page.

Printing a map
The Global Risk Data Platform provides a built-in tool for printing static maps to PDF format. Where a link to a live map application isn’t appropriate, PDF maps can be emailed or printed in hard-copy for reference.

Button Name Description
Print Map Opens a dialog for printing your map to PDF.

Once your map composition is ready, click on the Print Map button.
The Print Preview dialog opens.

Select your target Paper Size and image Resolution from the respective drop-downs.
The text in the upper and lower boxes can be replaced by a Map Title and Map Comments.
If necessary, reposition the map image in the map frame using the on-map navigation controls.
Click the Print button when you are satisfied with your print layout. This fires a command to GeoServer to generate a PDF and then send it back to the browser.

This help is based on the OpenGeo GeoExplorer tutorial.