Navigating the Map

JMap NG offers several ways to navigate the map and explore your data:

• Search for a specific location

• Search for elements in the project (simple search)

• Navigate with your fingers or mouse

• Centre the map on precise coordinates and adjust the scale

Search for a location

You can search for a specific location to centre the map on it:

1. Click the icon to open the search field.

2. Enter the location information (address, postal code, city, place name, etc.). JMap NG uses the Mapbox Geocoding service to find the location. Matching results are displayed as you type.

3. Select the desired location by clicking on it in the list. The map automatically centres on that location, identified by a marker , and zooms in to show more details. A tooltip displays the location information. Note: When you search for a new location, the marker for the previous location disappears.

   
4. Click to clear the search terms.

5. Click the icon to close the search and remove the last displayed location information.

Search for features in the project (simple search)

You can search for features across the project layers based on their attribute values.

The attributes used for simple searches must be indexed in the data source and selected in the project layer. Contact your JMap Cloud administrator if you would like specific attributes to be available for simple searches.

1. Click the icon or press the / key to open the Search in project field.

2. Enter your search terms. As you type, a list displays all features in the project whose attributes match your terms, across all layers.

3. Click a feature in the list to locate it. The feature is selected and the map centres on it.

   
4. Click the name of a layer to select all features in that layer matching your search. The map centres to display all of these features.

Navigate with your fingers or mouse

You can explore the map interactively:

With your fingers (touch device)

• Pinch/spread: Zoom out/in

• Drag: Pan the map

• Two-finger rotation: Rotate the map

• Two-finger swipe up/down: Tilt the map (3D navigation)

With your mouse

• Scroll wheel: Zoom in/out

• Left click + drag: Pan the map

• Ctrl + click + drag: Rotate and tilt the map

Control orientation

1. Click the icon to display information about the rotation (in degrees relative to North) and the tilt (in degrees relative to the horizontal plane).

2. Click the icon to restore the default orientation (flat view oriented North). The icon turns grey and indicates North on the horizontal plane.

Centre the map on coordinates and modify the scale

You can centre the map on a precise coordinate and change the map scale:

Modify the scale

1. Click the icon to open the geographic information window.

2. Click Scale to open the Change the map scale window.

3. Enter the new scale or adjust it with the arrows. The map scale updates in real time.

4. Click OK to close the window and apply the chosen scale.

Change the coordinate system

Click EPSG:4326 or EPSG:3857 to switch between coordinate reference systems:

• EPSG:4326: Coordinates in Latitude and Longitude (Lat, Lon)

• EPSG:3857: Coordinates in X (Longitude) and Y (Latitude) in metres (standard system for web mapping applications)

The displayed coordinates correspond to the current cursor position and update as you move it.

Centre on precise coordinates

1. Click the displayed coordinates to open the Recenter the map window.

2. Enter the desired coordinates or adjust them with the arrows. The map recentres automatically and a point marks the exact position.

3. Click OK to close the window. You can click the icon to return to the previous view.