To launch the DE Africa Map and display some basic data follow these steps.
Visualise and analyse your dataset:
When a dataset is added to the map via the data catalogue, a legend for that dataset will appear in the workbench. From the workbench you can:
There are multiple ways to navigate DE Africa Map's map view:
Move your mouse pointer over the map and use the scroll wheel to zoom in or out. The location at the centre of the map display is the centre of the zooming. Right-click and drag upwards or downwards over the map to zoom about the centre point. Select the zoom control to zoom in or out quickly by a set amount.
Click anywhere on the map and drag it to the required location.
Use the compass control to rotate the map so North is no longer at the top. Select the “gyroscope” in the centre of the compass control and drag slowly to the left or right to rotate the map clockwise or anti-clockwise respectively. The further you drag, the faster it rotates. Release the mouse button when you reach the desired rotation.
Select the North Point or outer ring of the Compass Control and drag it around to set the desired rotation directly.
Control + left-click and drag left or right over the map to rotate the view about the centre.
Select the “gyroscope” in the centre of the compass control and drag slowly upwards to tilt the view into a perspective view. Drag downwards to tilt the view back to vertical. The further you drag, the faster it tilts. Release the mouse button when you reach the desired view.
Control + left-click and drag upwards or downwards over the map to enter or adjust the perspective view.
When you are in perspective view, control + left-click and drag left or right over the map to “orbit” around the centre of the view. You can also click and drag left or right over the “gyroscope” at the centre of the Compass Control to orbit about the centre of the view.
Double-click the “gyroscope” in the centre of the Compass Control to return the view quickly to a vertical view with North to the top at the current location and scale.
Dragging to pan and using the mouse wheel to zoom still work while showing a perspective view.
Select the Map button in the top right of the screen:
When you have identified a region and available dataset, it will feature on the map view. To find out more information you can click on points, lines or within regions to display the feature information available from the spatial data provider for that particular feature.
For points and lines, you need to click quite accurately to identify the feature. For regions, clicking on the boundary will give ambiguous results. Click within the region.
The splitter functionality allows you to compare a dataset for different time periods. To use it:
There are two types of download:
There are two ways to load your data:
As for DE Africa Map data sets, you can select regions or points to see the data available for that location. If the file is a CSV file, the data from all columns will be shown in the feature information dialogue.
You can also use all of the features of the workbench on the data you have loaded as well.
To share a view of your data with others, you must first publish it to the web somewhere with a URL, and then load it from there.
DE Africa Map can display two kinds of spreadsheets:
lon. These will be displayed as points (circles).
Spreadsheets must be saved as CSV (comma-separated values).
Other standard spatial data types such as GeoJSON and KML are also supported.
There are three ways to share your DE Africa Map view:
Note that only the third and fourth methods will show the data you have loaded from a local file.