Use the cordinates (Latitude and Longitude) instead of the address to position the markers over the Maps

maps-coordinates.php

<?php
/**
 * Use the coordinates (Latitude, Longitude) instead of the address to position the markers over the Maps
 * 
 * Replace 'MY_LATITUDE_FIELD_ID', 'MY_LONGITUDE_FIELD_ID' with field ids containing the latitude and longitude values
 *
 * @param array $fields_array Gravity Forms fields IDs containing the latitude and longitude
 * @param GravityView_View $gravityview_view Current View object
 *
 * @return array Array with field IDs of latitude and longitude fields (Example: [ 5, 6 ] ). Empty array if not the form we want to override.
 */
function my_gv_maps_lat_long_fields( $fields_array = array(), $gravityview_view = null ) {

	$form = $gravityview_view->getForm();

	// Only use these fields to provide the coordinates for Form ID #123
	if ( 123 !== (int) $form['id'] ) {
		return $fields_array;
	}

	return array( 'MY_LATITUDE_FIELD_ID', 'MY_LONGITUDE_FIELD_ID' );
}

add_filter( 'gravityview/maps/markers/lat_long/fields_id', 'my_gv_maps_lat_long_fields', 10, 2 );