Map.getLastClickLongitude Function

Format

long = map_name.getLastClickLongitude();

Description

The Map.getLastClickLongitude function retrieves the longitude of the last point on the map that the user tapped. This is often used in the callback function passed to Map.setOnClick to get the coordinates of the point that was just tapped. The tapped longitude is only recorded if a user taps on the map itself rather than on a marker.

Return Value

The function returns the longitude of the tapped point in degrees or notappl if the user has not tapped a point on the map.

Example

PROC GLOBAL

// Declare a map
Map mymap;

// Declare id for map marker
numeric markerId;

// This function is called when user taps on map.
// It moves the marker to the location that the user tapped.
function mapClicked()
numeric lat = mymap.getLastClickLatitude();
numeric lon = mymap.getLastClickLongitude();
mymap.setMarkerLocation(markerId, lat, lon);
end;

PROC SHOW_MAP
preproc

// Add a marker to the map at latitude 38.84839, longitude -76.931098
markerId = mymap.addMarker(38.84839, -76.931098);

// Set function that is called when the user taps on the map to move the marker
// to the new position
mymap.setOnClick(mapClicked());

// Display the map
mymap.show();