SVGGraph options: log_axis_y_base
- Option name:
log_axis_y_base- Default value:
10- Added in version:
- 2.12
- Data type:
- number [?]
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
- An
array, the number and data types of its members will depend on the option for which is it used. - boolean
- A boolean
TRUEorFALSEvalue, or any values that convert easily such as1,"1",0and"". - callback
- A callable function, which can be either the name of a function or an anonymous function itself.
- colour
- 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. - fill
- A colour value or one of the gradients and patterns supported by SVGGraph. See the SVGGraph colours page for details.
- integer
- A negative or positive whole number or
0. - measurement
- An
integerorfloatvalue, or a string containing a number followed by one of these CSS units:px,in,cm,mm,pt,pc. - number
- Any number supported by PHP, for example
1or-3.2or1.63e5orM_PI. - string
- Single or double quoted strings. Remember to double-quote your strings
if you are inserting a line break:
"Line 1\nLine 2".
- Per-dataset:
- no
- Multi-axis:
- yes [?]
Multi-axis options allow specifying one option for all axes on a multi-axis graph, or an array of options to be used for each axis in turn. If there are more axes than entries in the option array, the sequence will be repeated.
Example:
$settings['axis_taste'] = 'banana'; $settings['axis_smell'] = ['lavender', 'lemon', 'pine'];
For this example, all axes will taste of banana, but the leftmost axis will smell of lavender, the second axis will smell of lemon and the third axis will smell of pine. If there is a fourth axis it will smell of lavender, repeating the sequence.
- Supported by:
- Bar3DGraph BarAndLineGraph BarGraph BoxAndWhiskerGraph BubbleGraph CandlestickGraph CylinderGraph FloatingBarGraph GanttChart GroupedBar3DGraph GroupedBarGraph GroupedCylinderGraph Histogram HorizontalBar3DGraph HorizontalBarGraph HorizontalFloatingBarGraph HorizontalGroupedBar3DGraph HorizontalGroupedBarGraph LineGraph MultiLineGraph MultiRadarGraph MultiScatterGraph RadarGraph ScatterGraph
- Tags:
- See also:
- log_axis_y dataset_axis
Base of the logarithmic axis scale.
This option sets the base of the logarithm SVGGraph will use for the Y axis when
the log_axis_y option is enabled. SVGGraph will use the base for choosing
the axis divisions. The base value must be greater than 1.0, but it does not
have to be an integer.
For multiple Y-axis graphs the option supports an array containing a base value for each axis, for example:
$settings['log_axis_y_base'] = array(2, M_E);
This will set the base of the left axis to 2 and the base of the right axis
to e (using the PHP constant M_E).