<%@page import="ChartDirector.*" %>
<%
//
// We use a random number generator to simulate the data from 9:30 to 4:30
// with one data point every 4 minutes. The total number of points during
// that period is 106. (7 hours x 15 points/hour + 1)
//
int noOfPoints = 106;
//Assume we have not reached the end of the day yet, and only 85 points are
//available. Create a random table object of 1 col x 85 rows, using 9 as seed.
RanTable rantable = new RanTable(9, 1, 85);
//Set the 1st column to start with 1800 and with random delta from -5 to 5.
rantable.setCol(0, 1800, -5, 5);
//Get the data as the 1st column of the random table
double[] data = rantable.getCol(0);
//The x-axis labels for the chart
String[] labels = {"-", "10am", "-", " ", "-", "12am", "-", " ", "-", "2pm",
"-", " ", "-", "4pm", "-"};
//
// Now we obtain the data into arrays, we can start to draw the chart using
// ChartDirector
//
//Create a XYChart object of size 180 x 180 pixels with a blue background
//(0x9c9cce)
XYChart c = new XYChart(180, 180, 0x9c9cce);
//Add titles to the top and bottom of the chart using 7.5pt Arial font. The text
//is white 0xffffff on a deep blue 0x31319C background.
c.addTitle2(Chart.Top, "STAR TECH INDEX 2003-01-28", "arial.ttf", 7.5,
0xffffff, 0x31319c);
c.addTitle2(Chart.Bottom, "LATEST STI:1809.41 (+14.51)", "arial.ttf", 7.5,
0xffffff, 0x31319c);
//Set the plotarea at (31, 21) and of size 145 x 124 pixels, with a pale yellow
//(0xffffc8) background.
c.setPlotArea(31, 21, 145, 124, 0xffffc8);
//Add custom text at (176, 21) (top right corner of plotarea) using 11pt Times
//Bold Italic font/red (0xc09090) color
c.addText(176, 21, "Chart Demo", "timesbi.ttf", 11, 0xc09090).setAlignment(
Chart.TopRight);
//Use 7.5 pts Arial as the y axis label font
c.yAxis().setLabelStyle("", 7.5);
//Set the labels on the x axis by spreading the labels evenly between the first
//point (index = 0) and the last point (index = noOfPoints - 1)
c.xAxis().setLinearScale(0, noOfPoints - 1, labels);
//Use 7.5 pts Arial as the x axis label font
c.xAxis().setLabelStyle("", 7.5);
//Add a deep blue (0x000080) line layer to the chart
c.addLineLayer(data, 0x80);
//output the chart
request.getSession().setAttribute("chart1", c.makeChart2(Chart.PNG));
%>
<html>
<body topmargin=0 leftmargin=5 rightmargin=0 marginwidth=5 marginheight=0>
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
Enhanced Line Chart
</div>
<hr color="#000080">
<div style="font-size:10pt; font-family:verdana">
<a href="VIEWSOURCE.jsp?file=<%=request.getServletPath()%>">
View Chart Source Code
</a>
</div>
<br>
<img src="chart1.chart?no_cache=<%=Chart.getUniqueId()%>">
</body>
</html>