This example illustrates a horizontal bar chart with invisible axes and plot area, using a gradient color for the bars.

The key features demonstrated in this example are:

• Swap the x and y axes to create a horizontal bar chart using XYChart.swapXY.
  
  
• Set the plot area background, border and grid line colors to Transparent using XYChart.setPlotArea.
  
  
• Set the x axis, y axis and y axis labels to Transparent using Axis.setColors.
  
  
• Set the x axis font style to deep red 10 points Arial Bold Italic by using the TextBox object representing the x axis label prototype (obtained by Axis.setLabels).
  
  
• Set the aggregate bar label style to deep red 10 points Times Bold Italic using Layer.setAggregateLabelStyle.
  
  
• Customize the aggregate bar labels by using Layer.setAggregateLabelFormat.
  
  
• Create a gradient color for the bars that changes smoothly from dark green to white along a horizontal direction using BaseChart.gradientColor.

[File: phpdemo/hbar.php".]

<?php require_once("../lib/phpchartdir.php"); #The data for the bar chart $data = array(3.9, 8.1, 10.9, 14.2, 18.1, 19.0, 21.2, 23.2, 25.7, 36); #The labels for the bar chart $labels = array("Bastic Group", "Simpa", "YG Super", "CID", "Giga Tech", "Indo Digital", "Supreme", "Electech", "THP Thunder", "Flash Light"); #Create a XYChart object of size 600 x 250 pixels $c = new XYChart(600, 250); #Add a title to the chart using Arial Bold Italic font $c->addTitle("Revenue Estimation - Year 2002", "arialbi.ttf"); #Set the plotarea at (100, 30) and of size 400 x 200 pixels. Set the plotarea #border, background and grid lines to Transparent $c->setPlotArea(100, 30, 400, 200, Transparent, Transparent, Transparent, Transparent, Transparent); #Add a bar chart layer using the given data. Use a gradient color for the bars, #where the gradient is from dark green (0x008000) to white (0xffffff) $layer = $c->addBarLayer($data, $c->gradientColor(100, 0, 500, 0, 0x8000, 0xffffff)); #Swap the axis so that the bars are drawn horizontally $c->swapXY(true); #Set the bar gap to 10% $layer->setBarGap(0.1); #Use the format "US$ xxx millions" as the bar label $layer->setAggregateLabelFormat("US\$ {value} millions"); #Set the bar label font to 10 pts Times Bold Italic/dark red (0x663300) $layer->setAggregateLabelStyle("timesbi.ttf", 10, 0x663300); #Set the labels on the x axis $textbox = $c->xAxis->setLabels($labels); #Set the x axis label font to 10pt Arial Bold Italic $textbox->setFontStyle("arialbi.ttf"); $textbox->setFontSize(10); #Set the x axis to Transparent, with labels in dark red (0x663300) $c->xAxis->setColors(Transparent, 0x663300); #Set the y axis and labels to Transparent $c->yAxis->setColors(Transparent, Transparent); #output the chart header("Content-type: image/png"); print($c->makeChart2(PNG)); ?>