You can add a longitude/latitude (lon-lat) grid to a LuciadRIA application by creating a GridLayer
and passing a LonLatGrid
instance to it.
Such a grid layer gives users a point of reference when they’re panning and moving the map.
Program: Creating a grid layer with a lon-lat grid
function createGridLayer() {
var lonLatGrid = new LonLatGrid();
return new GridLayer(lonLatGrid);
}
After creating the layer, you add the layer to the map.
Program: Adding the grid layer to the map
map.layerTree.addChild(createGridLayer(), "top");