Group points into cluster deleting duplicates

function create_clusters() {

	while(x) {
		this.point_clusters[x] = consulta_arbol_r_x();
		

		for (var i=0; point_clusters.lenght <= i; i++) {

			point_clusters[x] = create_clusters_clean( 
								this.point_clusters[x]
								create_clusters_order(this.point_clusters[x]),
								i
							);

		}
	}


	// xa fora do bucle de zooms
	refresh_markers();

}



function create_clusters_clean( all_clusters, clusters_by_size, recursion_num ) {
	var result_array = [];
	var current_cluster = [];

	$( clusters_by_size ).each( function(i,e) {
		
		// fisrt (recursion_num) elements are ready
		if( i<= recursion_num )	{
			result_array[e] = all_clusters[e];
			all_clusters[e].remove();

			// load current node to compare with next others
			if( i == recursion_num ) {
				current_cluster = all_clusters[e];
			}
		}
		else { // now, search for duplicates in the rest of items
			$(current_cluster).each( function(i2,current_cluster_val) {
				if(current_cluster_val == e){ //looking for duplicated 1st dimension keys. 
					all_clusters[e].remove();
				}
				else { //looking for duplicated 2st dimension keys
					$(all_clusters[e]).each( function(i3, iteration_cluster_2st_val){
						if(iteration_cluster_2st_val == current_cluster_val) {
							all_clusters[e][i3].remove();
						}
					});
				}

			});

		}


	});

	result_array.push(all_clusters)

	return result_array;
}



function create_clusters_order(point_clusters){

	var ord_array = [];
	var largest_index = false;
	var largest_value = 0;

	do {
		largest_value = 0;

		$(point_clusters ).each(i,e) {
			if( $(point_clusters).lenght > largest_value ) {
				largest_value = $(point_clusters).lenght;
				largest_index = i;
			}
		}

		ord_array.push(largest_index);
		point_clusters[largest_index].remove();

	} while( $(point_clusters).lenght > 0);

	return ord_array;
}

/*
	Establecemos de cero os markers e os clustermarkers se non existen 
	poñendo máximo e minimo zoom permitido nos rangos e sempre invisibles
	posteriormente e despois de cada debuxado de filtro, collemos e imos 
	acotando por encima máis por debaixo;
*/
function refresh_markers() {

	//
	//	Establecer zooms de novo
	//	Visibilidade null para todos
	//	Reiniciar zoom mínimo a zoom máximo
	//


	for (var zoomlevel = 0; zoomlevel <= maxzoom; zoomlevel++) {

		$(this.point_clusters[zoomlevel]).each(function(i, cluster){
			if( $(cluster).lenght == 1 ) {

				// parámetros por extender
				this.markers[i].zoom_minimo = zoomlevel;
				this.markers[i].visible = true;

			}
		});
	}

}