Re: Image_Graph, Bar plots and Legends

Hi Markus, You should simply replace: $Datasets[] = $Dataset; With $Datasets[$legend] =& $Dataset; (Use the ampersamd, to avoid _risking_ copy-of-assignments) or do $Dataset->setName($legend) And then simply use: $Plot =& $Plotarea->addNew('bar', array($Datasets)); regards Jesper Markus Wolff wrote:

Hi there, I'm making my first attempts with Image_Graph and I'm trying to accomplish something along the lines of this example: http://pear.veggerby.dk/samples/index.php?sample=plot_bar_multiple So I want to have a bar plot with multiple datasets for each point on the x-axis. Everything works fine for me using the latest released version of Image_Graph, except that all the entries in the legend say "Bar". Obviously, that's not what I want. Just defining $Legend->setPlotarea($Plotarea) does not help as the names of the legend entries are not contained in the dataset, I'd have to have named datasets for that. A little bit of digging lead me to this example for a line plot: $Plotarea->addNew('line', array($Dataset, 'normal', $legend)); This works, I get a line plot with three lines and the associated legend entries. However, when I change the plot type to "bar"... $Plot =& $Plotarea->addNew('bar', array($Dataset, 'normal', $legend)); ...I'm suddenly getting a stacked bar plot instead of having all the bars side-by-side in a row. And the plot values are kind of bogus as well. Here's the complete loop that actually works, but without the legend names: foreach($stats['axes']['y'] as $legend => $ypoints) {

    $Dataset =& Image_Graph::factory('dataset');
    for ($i=0; $i < count($ypoints); $i++) {
        $Dataset->addPoint($stats['axes']['x'][$i], $ypoints[$i]);
    }
    $Datasets[] = $Dataset;
    $Plot =& $Plotarea->addNew('bar', array($Dataset)); // name missing

} I have a complete example up here: http://www.21st.de/igraph.phps Search for "PROBLEM AREA", which marks the spot. Any help is appreciated. CU Markus