SVGGraph Horizontal Bar Graphs

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SVGGraph currently contains these classes for drawing horizontal versions of the standard bar graphs: HorizontalBarGraph; HorizontalStackedBarGraph; HorizontalGroupedBarGraph. An example of each type is shown below.

Example code

Here are the settings and PHP code used to generate the graphs above:

require_once('includes/SVGGraph.php');
 
$settings = array(
  'back_colour' => '#eee',  'stroke_colour' => '#000',
  'back_stroke_width' => 0, 'back_stroke_colour' => '#eee',
  'back_image' => 'images/svgbg.png',
  'axis_colour' => '#333',  'axis_overlap' => 2,
  'axis_font' => 'Georgia', 'axis_font_size' => 10,
  'grid_colour' => '#666',  'label_colour' => '#000',
  'pad_right' => 20,        'pad_left' => 20,
  'link_base' => '/',       'link_target' => '_top',
  'minimum_grid_spacing' => 20
);
 
$values = array(
 array('Dough' => 30, 'Ray' => 50, 'Me' => 40, 'So' => 25, 'Far' => 45, 'Lard' => 35),
 array('Dough' => 20, 'Ray' => 30, 'Me' => 20, 'So' => 15, 'Far' => 25, 'Lard' => 35,
  'Tea' => 45)
);
 
$colours = array(array('red','yellow'), array('blue','white'));
$links = array('Dough' => 'jpegsaver.php', 'Ray' => 'crcdropper.php',
  'Me' => 'svggraph.php');
 
$graph = new SVGGraph(300, 200, $settings);
$graph->colours = $colours;
 
$graph->Values($values);
$graph->Links($links);
$graph->Render('HorizontalBarGraph');

If you have already looked at the bar graph page, this code should be familiar - the only change is 'HorizontalBarGraph' in the call to $graph->Render. (I have also removed the 'project_angle' option, since that is only used by the vertical 3D bar graph.)

Change 'HorizontalBarGraph' to one of the other class names to draw that type instead.

Settings

These options are common to all graph types:

These options are used by the horizontal and vertical bar graphs, and many are also used by the line and scatter graphs:

• ^[1]For HorizontalGroupedBarGraph, bar_space is the space between groups of bars
• ^[2]Only used for HorizontalGroupedBarGraph
• ^[3]These options override SVGGraph's calculations for axis start, end and division values. They will also affect the grid for vertical bar graphs, but not in a useful way. See the axis and grid options page for more details.
• ^[4]The axis labelling options were added in version 2.6. For details, see the titles, labels and legends page.

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