pChart 2.0 online documentation

setAxisPosition - Define the position of one Y Axis

This function allows you to set position (left or right) of an Y Axis. Values on this axis are automatically computed by the scaling algorithm.

By default all new series are binded to the default axis with an ID of 0. You can bind a serie to another axis using the setSerieOnAxis function.

Calling this function

setAxisPosition($AxisID,$Position);

Where :

AxisID is the ID of the axis we want to name.

Position is the side where the axis will be drawn.

Valid Position values are :

AXIS_POSITION_LEFT default positioning on the left side of the chart.

AXIS_POSITION_RIGHT to put the axis on the right side of the chart.

Sample script #1

 /* Create the pData object */
 $MyData = new pData(); 

 /* The default ordinate axis will be on the left side*/
 $MyData->setAxisPosition(0,AXIS_FORMAT_METRIC);
 /* The second ordinate axis will be on the right side */
 $MyData->setAxisPosition(1,AXIS_POSITION_RIGHT);

Sample script #2

 $MyData = new pData();  

 /* Prepare some nice data & axis config */
 $MyData->addPoints(array(24,-25,26,25,25),"Temperature");
 $MyData->addPoints(array(1,2,VOID,9,10),"Humidity 1");
 $MyData->addPoints(array(1,VOID,7,-9,0),"Humidity 2");
 $MyData->addPoints(array(-1,-1,-1,-1,-1),"Humidity 3");
 $MyData->addPoints(array(0,0,0,0,0),"Vide");
 $MyData->setSerieOnAxis("Temperature",0);
 $MyData->setSerieOnAxis("Humidity 1",1);
 $MyData->setSerieOnAxis("Humidity 2",1);
 $MyData->setSerieOnAxis("Humidity 3",1);
 $MyData->setSerieOnAxis("Vide",2);
 $MyData->setAxisPosition(2,AXIS_POSITION_RIGHT);
 $MyData->setAxisName(0,"Temperature");
 $MyData->setAxisName(1,"Humidity");
 $MyData->setAxisName(2,"Empty value");

 /* Bind a data serie to the X axis */
 $MyData->addPoints(array("Jan","Feb","Mar","Apr","May","Jun"),"Labels");
 $MyData->setSerieDescription("Labels","My labels");
 $MyData->setAbscissa("Labels");

 /* Define the graph area and do some makeup */
 $myPicture->setGraphArea(90,60,660,190);
 $myPicture->drawText(350,55,"My chart title",array("FontSize"=>20,"Align"=>TEXT_ALIGN_BOTTOMMIDDLE));
 $myPicture->drawFilledRectangle(90,60,660,190,array("R"=>255,"G"=>255,"B"=>255,"Surrounding"=>-200,"Alpha"=>10));

 /* Compute and draw the scale */
 $myPicture->drawScale(array("DrawYLines"=>array(0)));

Last updated on 12/03/2009
by Jean-Damien