ChartDirector 7.0 (Java Edition)

Surface Chart Axis Types




The example demonstrates different axis scale types for the surface charts.

Like an XYChart, in a SurfaceChart, the axis scale can represent numbers, date/time or labels. In this example, the x-axis uses a date/time scale, the y-axis uses a label based scale, and the z-axis uses a numeric scale.

Source Code Listing

[JSP Version] jspdemo/surfaceaxis.jsp
<%@page import="ChartDirector.*, java.util.*" %> <% // The x and y coordinates of the grid Date[] dataX = {new GregorianCalendar(2008, 8, 1).getTime(), new GregorianCalendar(2008, 8, 2 ).getTime(), new GregorianCalendar(2008, 8, 3).getTime(), new GregorianCalendar(2008, 8, 4 ).getTime(), new GregorianCalendar(2008, 8, 5).getTime(), new GregorianCalendar(2008, 8, 6 ).getTime()}; String[] dataY = {"Low", "Medium", "High"}; // The data series double[] lowData = {24, 38, 33, 25, 28, 36}; double[] mediumData = {49, 42, 34, 47, 53, 50}; double[] highData = {44, 51, 38, 33, 47, 42}; // Create a SurfaceChart object of size 760 x 500 pixels SurfaceChart c = new SurfaceChart(760, 500); // Add a title to the chart using 18 points Arial font c.addTitle("Surface Chart Axis Types", "Arial", 18); // Set the center of the plot region at (385, 240), and set width x depth x height to 480 x 240 x // 240 pixels c.setPlotRegion(385, 240, 480, 240, 240); // Set the elevation and rotation angles to 30 and -10 degrees c.setViewAngle(30, -10); // Set the data to use to plot the chart. As the y-data are text strings (enumerated), we will use // an empty array for the y-coordinates. For the z data series, they are just the concatenation of // the individual data series. c.setData(Chart.CTime(dataX), null, new ArrayMath(lowData).insert(mediumData).insert(highData ).result()); // Set the y-axis labels c.yAxis().setLabels(dataY); // Set x-axis tick density to 75 pixels. ChartDirector auto-scaling will use this as the guideline // when putting ticks on the x-axis. c.xAxis().setTickDensity(75); // Spline interpolate data to a 80 x 40 grid for a smooth surface c.setInterpolation(80, 40); // Set surface grid lines to semi-transparent black (cc000000). c.setSurfaceAxisGrid(0xcc000000); // Set contour lines to the same color as the fill color at the contour level c.setContourColor(Chart.SameAsMainColor); // Add a color axis (the legend) in which the top right corner is anchored at (95, 100). Set the // length to 160 pixels and the labels on the left side. ColorAxis cAxis = c.setColorAxis(95, 100, Chart.TopRight, 160, Chart.Left); // Add a bounding box with light grey (eeeeee) background and grey (888888) border. cAxis.setBoundingBox(0xeeeeee, 0x888888); // Set label style to Arial bold for all axes c.xAxis().setLabelStyle("Arial Bold"); c.yAxis().setLabelStyle("Arial Bold"); c.zAxis().setLabelStyle("Arial Bold"); c.colorAxis().setLabelStyle("Arial Bold"); // Set the x, y and z axis titles using deep blue (000088) 15 points Arial font c.xAxis().setTitle("Date/Time Axis", "Arial Italic", 15, 0x000088); c.yAxis().setTitle("Label\nBased\nAxis", "Arial Italic", 15, 0x000088); c.zAxis().setTitle("Numeric Axis", "Arial Italic", 15, 0x000088); // Output the chart WebChartViewer viewer = new WebChartViewer(request, "chart1"); viewer.setChart(c, Chart.SVG); %> <!DOCTYPE html> <html> <head> <title>Surface Chart Axis Types</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;"> Surface Chart Axis Types </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>