CLASS
BarPlot EXTENDS
Plot
(Defined in: jpgraph_bar.php : 197) Class usage and Overview
Concrete class which implements the standard vertical bar plot functionality.
To show horizontal plots you can rotate the graph 90 degrees by $graph->Angle(90);
See also related classes:
AccBarPlot and GroupBarPlot
Class Methods
function BarPlot(&$datay,$datax)
Create a new bar plot
Argument | Default | Description |
&$datay
| | Data serie |
$datax
|
false
| X-positions |
Description
Create a new bar plot
$bar = new BarPlot($ydata);
function SetAbsWidth($aWidth)
Specify width in absolute pixels.
Argument | Default | Description |
$aWidth
| | Width in pixels |
Description
Specify width in absolute pixels. If specified this overrides any calls to SetWidth()
See also
BarPlot::SetWidth
$barplot->SetAbsWidth(20);
function SetAlign($aAlign)
Set the alignment between the major tick marks doe the bars.
Argument | Default | Description |
$aAlign
| | String to specify alignment |
Description
Bars can be aligned when using a text scale. Valid arguments for align are 'left', 'center' and 'right'.
Default is to center the bars.
$graph->SetScale("textlin");
// ...
$barplot = new BarPlot($ydata,$xdata);
$barplot->SetAlign("center");
// ...
function SetFillColor($aColor)
Specify fill color for bars.
Argument | Default | Description |
$aColor
| | Color specification |
Description
Set fill color for the bars. The color for the frame around the bar is specified with BarPlot::SetColor() method.
See also
Plot::SetColor
$barplot->SetFillColor('#E234A9');
function SetFillGradient($from_color,$to_color,$style)
Specify a gradient fill for the bars.
Argument | Default | Description |
$from_color
| | Start color |
$to_color
| | End color |
$style
| | Type of gradient |
Description
Gradient fill provides a smooth transition from the 'start' color to the 'end' color. The type of gradient fill can be
- GRAD_VER, Vertical gradient
- GRAD_HOR, Horizontal gradient
- GRAD_MIDHOR, From the center and out, horizontal
- GRAD_MIDVER, From the center and out, vertical
- GRAD_WIDE_MIDVER, From the center and out, vertical. Wide mid section.
- GRAD_WIDE_MIDHOR, From the center and out, horizontal. Wide mid section.
- GRAD_CENTER, From the center and beaming out
Since gradient fills make use of many colors and bitmapped images which doesn't use truecolor is limited to 256 colors you might find yourself out of colors if using to many different gadient fills in your graph.
You should also be observant that gradient fills makes use of more CPU time than solid fills.
$barplot->SetFillgradient('orange','darkred',GRAD_VER);
function SetNoFill()
Dont's paint the interior of the bars with any color.
Description
Bar plots are filled by default. Calling this method disable the fill of barplots.
This is usefull when you have a background in the image that you want to be shown underneth the bars.
See also
BarPlot::SetFillColor
$barplot->SetNoFill();
function SetShadow($color,$hsize,$vsize)
Set a drop shadow for the bar (or rather an "up-right" shadow)
Argument | Default | Description |
$color
|
"black"
| Shadow color |
$hsize
|
3
| Horizontal size in pixels |
$vsize
|
3
| Vertical size in pixels |
Description
Set a drop shadow for the bar (or rather an "up-right" shadow)
$barplot->SetShadow();
function SetWidth($aFractionWidth)
Specify width as fractions of the major step size
Argument | Default | Description |
$aFractionWidth
| | Width in fractions |
Description
Specify width as fractions of the major step size.
See also
BarPlot::SetAbsWidth
$barplot->SetWidth(0.4);
function SetYBase($aYStartValue)
Specify the base value for the bars
Argument | Default | Description |
$aYStartValue
| | Strta Y-value for bars. |
Description
Specify the start plot for bars, (minimum Y-value). By default the base uses the value 0 as base.
$barplot->SetYBase(100);
function SetYMin($aYStartValue)
DEPRECATED use SetYBase instead
Argument | Default | Description |
$aYStartValue
| | Y-Value for base of bars |
Description
DEPRECATED use SetYBase() instead
DEPRECATED use SetYBase() instead