SVGGraph options: log_axis_y
- Option name:
- Default value:
- Added in version:
- Data type:
- boolean [?]
The datatypes used in this documentation for specifying SVGGraph options are described below. All options can be a literal value of the data type described, a variable containing the data type, or an expression that will produce the data type when evaluated (and they must always be valid PHP expressions).
array(), the number and data types of its members will depend on the option for which is it used.
- A boolean
FALSEvalue, or any values that convert easily such as
- A callable function, which can be either the name of a function or an anonymous function itself.
- Any of the colour values supported by SVG inside a single or double
quoted string. These include three and six digit hex codes, RGB and
RGBA colours, and colour names. SVG uses
"none"for no colour, which generally leaves things transparent.
- A colour value or one of the gradients and patterns supported by SVGGraph. See the SVGGraph colours page for details.
- A negative or positive whole number or
- Any number supported by PHP, for example
- Single or double quoted strings. Remember to double-quote your strings
if you are inserting a line break:
"Line 1\nLine 2".
- no [?]
Per-dataset options allow specifying one option for all datasets or an array of options to be used for each dataset in turn. If there are more datasets than entries in the option array, the sequence will be repeated.
$settings['widget_taste'] = 'banana'; $settings['widget_colour'] = array('red', 'green', 'blue');
For this example, the widgets for all datasets will taste of banana. The graph will use red widgets for dataset 0, green widgets for dataset 1 and blue widgets for dataset 2. Dataset 3 repeats the sequence so its widgets will be red, dataset 4 will have green widgets and dataset 5 will have blue widgets.
- Supported by:
- Bar3DGraph BarAndLineGraph BarGraph BoxAndWhiskerGraph BubbleGraph CylinderGraph FloatingBarGraph GroupedBar3DGraph GroupedBarGraph GroupedCylinderGraph Histogram HorizontalBarGraph HorizontalFloatingBarGraph HorizontalGroupedBarGraph LineGraph MultiLineGraph MultiRadarGraph MultiScatterGraph RadarGraph ScatterGraph
Enables logarithmic Y-axis divisions.
This option changes the Y-axis divisions from evenly-spaced values to a logarithmic scale. Logarithmic scales cannot show a 0 value, so attempting to set a minimum (or maximum) for the axis that has a 0 value will cause an error. The minimum and maximum must have the same sign for the same reason.
For dual Y-axis graphs the option supports an array containing a true or false value for each axis, for example:
$settings['log_axis_y'] = array(true, false);
This will enable the logarithmic scale for the left axis and use a linear scale for the right axis. The grid always comes from the left axis, so this graph will have a logarithmic grid.