Map.removeGeometry Function

Format

b = map_name.removeGeometry(geometryId);

Description

The Map.removeGeometry function removes Geometry from the Map map_name. geometryId should be the id returned by Map.addGeometry when the Geometry was added to the Map.

Return Value

The function returns a logical value of 1 (true) if the geometry was found and was successfully removed and 0 (false) if there is an error.

Example

PROC GLOBAL

// Declare a map
Map mymap;

// Declare a geometry to hold boundary polygon
Geometry boundary;

// Declare a variable to hold the id of the boundary on the map
numeric boundaryGeometryId;

function showBoundary()
// Add boundary polygon to the map and save the id
boundaryGeometryId = mymap.addGeometry(boundary);
end;

function hideBoundary()
// Remove the boundary polygon from the map
mymap.removeGeometry(boundaryGeometryId);
boundaryGeometryId = 0;
end;

function toggleBoundary()
if boundaryGeometryId = 0 then
showBoundary();
else
hideBoundary();
endif;
end;

PROC SHOW_MAP
preproc

// Load the boundary polygon from a file
boundary.load("boundary.geojson");

// Add a button to show/hide the boundary
mymap.addTextButton("Boundary", toggleBoundary());

// Display the map
mymap.show();