ContentsBasic ChartingPlot a sine wave

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Now for the fun stuff!

If you've done graphics programming before, you probably think of plotting a sine wave to be the graphic equivalent of "Hello World", as it tests many of the elements of the programming environment.

This example is another morph of the previous servlets -> see the code.

When you run the hello4 servlet, what you get should look like this.

Here's what we've done:

• Copied the source file and renamed the class to hello2
• Line 14 - constructed a PdfChart instead of a PdfPage
• Line 15 - made sure the text color would be black
• Line 20 to 23 - created and initialized an array of values
• Line 24 to 25 - constructed a ValueSet with associated rendering information - more on this later
• Line 26 - appended the ValueSet to the chart
• Line 27 - set the range of values to show on the vertical axis, and what value should be shown at the bottom of the chart
• Line 28 - rendered the chart

ContentsBasic ChartingPlot a sine wave

Previous: Basic Charting | Next: Add a grid