hierarchical

I have a multidimensional array in PHP produced by the great examples of icio and ftrotter (I am use ftrotterrs array in arrays variant): Turn database result into array I have made this into a unordered list width this method: public function outputCategories($categories, $startingLevel = 0) { echo "<ul>\n"; foreach ($categories as $key => $category) { if (count($category['children']) > 0) { echo "<li>{$category['menu_nl']}\n"; $this->outputCategories($category['children'], $link , $start, $startingLevel+1); echo "</li>\n"; } else { echo "<li>{$category['menu_nl']}</li>\n"; } } echo "</ul>\n"

I have a table having hierarchical menus like "id" "parent_id" "name" 1 0 menu 2 1 item1 3 2 item1_1 4 1 item2 5 4 item2_1 ... ... and I have 100s of menu items here. In order to get all items in an array I have to write a recursive function like this getmenu function(parent_id = 1) { $items = mysql_query("SELECT id FROM table WHERE parent_id = " + parent_id); while ($item = msyql_Fetch_assoc($items)) { ...here I put them in array and call recursive function again to get sub items... getmenu($item['id']); } } but this executes 100s of queries. Is this the best way to do this, to get

I have a question and working last week with this and couldnt solve yet.. I can query submenus with join but i cant order it. I have a table like this | id | name | parent | order | |-------------------------------------------| | 1 | menu1 | 0 | 1 | | 2 | submenu1 | 1 | 2 | | 3 | submenu2 | 1 | 1 | | 4 | subsubmenu | 2 | 1 | | 5 | subsubsubmenu:) | 4 | 1 | | 6 | menu2 | 0 | 3 | | 7 | menu3 | 0 | 2 | |-------------------------------------------| I wanna get something like this. | - menu1 | - submenu2 | - submenu1 | - subsubmenu | - subsubsubmenu:) | - menu3 | - menu2 Can anybody give me an idea

I'm working on R on a graph and I'd like to have a hierarchical plot, based on the values in the vector S (a value for each node). lay2 <- layout_with_sugiyama(grafo, attributes="all", layers = S, hgap=10, vgap=10) plot(lay2$extd_graph, vertex.label.cex=0.5) However, the paramaters hgap e vgap are not taken and the graph is really confused (even because I've got 162 nodes). I'm doing something wrong or there is another way in which I can do a hierarchical graph? I believe that layout_with_sugiyama is working just fine, but you may be misinterpreting the output. Since you do not provide any

+--------+---------+-----------+ | id | title | parent_id | +--------+---------+-----------+ | 1 | Lvl-1 | null | +--------+---------+-----------+ | 2 | Lvl-2 | null | +--------+---------+-----------+ | 3 | Lvl-11 | 1 | +--------+---------+-----------+ | 4 | Lvl-12 | 1 | +--------+---------+-----------+ | 5 | Lvl-121 | 4 | +--------+---------+-----------+ How do i actualy get root parent for each row For example, row with id 5 have parent with id 4 and id 4 have parent with id 1 , so root id for id 5 is id 1 I dont have any idea on how to do it and is there a way to solve this by using only 1

I am trying to cluster a Matrix (size: 20057x2).: T = clusterdata(X,cutoff); but I get this error: ??? Error using ==> pdistmex Out of memory. Type HELP MEMORY for your options. Error in ==> pdist at 211 Y = pdistmex(X',dist,additionalArg); Error in ==> linkage at 139 Z = linkagemex(Y,method,pdistArg); Error in ==> clusterdata at 88 Z = linkage(X,linkageargs{1},pdistargs); Error in ==> kmeansTest at 2 T = clusterdata(X,1); can someone help me. I have 4GB of ram, but think that the problem is from somewhere else.. As mentioned by others, hierarchical clustering needs to calculate the pairwise