Borderless Bar Chart

This example demonstrates a horizontal bar chart with no axes, grid lines or and plot area border. It also demonstrates using gradient colors for the bars, and a number of other ChartDirector features.

The key features demonstrated in this example are:

Swap the x and y axes to create a horizontal bar chart using XYChart.swapXY.
Create a gradient color that changes smoothly from dark green to white along a horizontal direction using BaseChart.gradientColor, then use it as the bar color in XYChart.addBarLayer.
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.setFontStyle and TextBox.setFontColor of the TextBox object that represents the x-axis label prototype (obtained using 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.

[JSP Version] jspdemo/hbar.jsp

<%@page import="ChartDirector.*, java.util.*" %>
<%
// The data for the bar chart
double[] data = {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
String[] labels = {"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
XYChart c = new XYChart(600, 250);

// Add a title to the chart using Arial Bold Italic font
c.addTitle("Revenue Estimation - Year 2002", "Arial Bold Italic");

// 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, Chart.Transparent, Chart.Transparent, Chart.Transparent,
    Chart.Transparent, Chart.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)
BarLayer layer = c.addBarLayer(data, c.gradientColor(100, 0, 500, 0, 0x008000, 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 10pt Times Bold Italic/dark red (0x663300)
layer.setAggregateLabelStyle("Times New Roman Bold Italic", 10, 0x663300);

// Set the labels on the x axis
TextBox textbox = c.xAxis().setLabels(labels);

// Set the x axis label font to 10pt Arial Bold Italic
textbox.setFontStyle("Arial Bold Italic");
textbox.setFontSize(10);

// Set the x axis to Transparent, with labels in dark red (0x663300)
c.xAxis().setColors(Chart.Transparent, 0x663300);

// Set the y axis and labels to Transparent
c.yAxis().setColors(Chart.Transparent, Chart.Transparent);

// Output the chart
WebChartViewer viewer = new WebChartViewer(request, "chart1");
viewer.setChart(c, Chart.SVG);

// Include tool tip for the chart
viewer.setImageMap(c.getHTMLImageMap("", "", "title='{xLabel}: US${value} millions'"));
%>
<!DOCTYPE html>
<html>
<head>
    <title>Borderless Bar Chart</title>
    <!-- Include ChartDirector Javascript Library to support chart interactions -->
    <script type="text/javascript" src="cdjcv.js"></script>
</head>
<body style="margin:5px 0px 0px 5px">
    <div style="font:bold 18pt verdana;">
        Borderless Bar Chart
    </div>
    <hr style="border:solid 1px #000080; background:#000080" />
    <div style="font:10pt verdana; margin-bottom:1.5em">
        <a href="viewsource.jsp?file=<%=request.getServletPath()%>">View Source Code</a>
    </div>
    <!-- ****** Here is the chart image ****** -->
    <%= viewer.renderHTML(response) %>
</body>
</html>