(Defined in: jpgraph_polar.php : 641)
Class usage and Overview
Represent a polar graph. Accessible properties are
- axis, An instance of PolarAxis() use to manipulate apperance of both radius and angle axis in the graph.
See also related classes:
PolarAxis
Class Methods
Rotate the polar graph 90 degrees
| Argument | Default | Description |
|---|
|
$lm
|
0
| Left margin |
|
$rm
|
0
| Right Margin |
|
$tm
|
0
| Top margin |
|
$bm
|
0
| Bottom margin |
Description:
Rotate the polar graph 90 degrees
$polargraph->Set90AndMargin(40,40,40,40);
Specify density for the radius axis
| Argument | Default | Description |
|---|
|
$aDense
| | Density |
Description:
This is analog to the density specification for the X, and Y-scale s for the standard X-Y-plots.
This specifies how close the autoscaling algorithm will place the tick marks to each other.
The tick density can be one of
- TICKD_DENSE, Dense tick layout
- TICKD_NORMAL, Normal tick layout
- TICKD_SPARSE, Sparse tick layout (few tick marks)
- TICKD_VERYSPARSE, Very Sparse tick layout (very few tick marks)
By default the radius density os set to TICKD_DENSE
// Slightly fewer ticks than default
$polargraph->SetDensity(TICKD_NORMAL);
Alternative way to specify size of the plot area
| Argument | Default | Description |
|---|
|
$w
| | Width |
|
$h
| | Height |
Description:
You can specify the plot area size an posiion in the graph in two ways. The frst is the standard way of specifying the margins on the sides with SetMargins() method.
This method centers a plot area with the specified width and height inthe middle of the graph, it is basically a short form for
SetMargins(
$graphwidth-($w/2),$graphwidth-($w/2),
$graphheight-($h/2),$graphheight-($h/2));
$polargraph->SetPlotSize(200,250);
Specify scale type (linear or log)
| Argument | Default | Description |
|---|
|
$aScale
| | Linear "lin" or logarithmic "log" scale |
|
$rmax
|
0
| Manual maximum value |
|
$dummy1
|
1
| No description available |
|
$dummy2
|
1
| No description available |
|
$dummy3
|
1
| No description available |
Description:
Specify scale type (linear or log) for the radius scale. A linear scale is specified as 'lin' and a logarithmic scale is specified as 'log'
// Specify a logarithmic scale for the radius
$polargraph->SetScale('log');
Specify if the graphs should be 360 or 180
| Argument | Default | Description |
|---|
|
$aType
| | Type |
Description:
Specify if the polargraph should be a full 360 degrees or just 180 degrees. The possible values for type are
- POLAR_360, A full 360 polar plot
- POLAR_180, A half 180 polar plot
By default the graph is a full 260 degrees.
$polargraph->SetType(POLAR_360);
Send graph back to browser or file
| Argument | Default | Description |
|---|
|
$aStrokeFileName
|
""
| File name |
Description:
Send a graph back to browser or to a file. This must be the last call in your script.
$polargraph->Stroke();
Construct a new graph
| Argument | Default | Description |
|---|
|
$aWidth
|
300
| Width (in pixels) |
|
$aHeight
|
200
| Height (in pixels) |
|
$aCachedName
|
""
| Cache name |
|
$aTimeOut
|
0
| Cache timeout |
|
$aInline
|
true
| Inline flag (DEPRECATED) |
Description:
Construct a new Polar Graph. This is completely analog to the standard Graph() creation and follows the exactly same pattern.
$polargraph = new PolarGraph(300,500);