Tips on Manipulating Graphs

A Test ...

• If you can see the X-Y plot below showing a sinusoidal curve, your web browser is Java Applet enabled. You will be able to view all the computation results on line. Note that you may also download the digital data by clicking on the link under the X-Y plot and save it to your hard drive.

• Occasionally the graph may become crooked. You can click on "Fill" button to refresh it.

• If you cannot see the X-Y plot above, your web browser is not Java Applet enabled. However, you will still be able to download the digital data to your hard drive.

• In case your browser still show the old graph, please follow the steps to turn off Java applet caching.

Zoom in / zoom out

• To zoom in on any region of the plot, select a box with the mouse pointer (see the plots below). Start at the upper left corner of the region you wish to view in more detail, and drag downwards and to the right. To brings the graph to the original scale, click on the "fill" button at the upper right corner.

Select a box using the mouse pointer...	Then release the mouse.

• To zoom out, drag the mouse pointer upwards (see the figure below). When zooming out, a reference box is drawn that will represent the current view, and dragging will cause a box to be displayed that represents the new view. Again, click on th e "fill" button at the upper right corner to bring the graph to the original scale.

Select a box using the mouse pointer...	Then release the mouse.