Formatting the Plot Area

For the data points to line up correctly with the world map we have provided, the axes of the graph must line up with the longitude and latitude on the map. You must set the scales exactly as instructed in the following. (If you use a different picture under the graph, you will have to figure out the correct maximum and minimum values.)

Double click on the Y-axis of the graph and choose the Scale tab. Replace all the default values with the following: Minimum value = -90; Maximum value = 70; Major unit = 30; Minor unit = 10=; and Crosses at -90.

Next you will format the X axis in a similar manner, entering the following data: Minimum value = -180; Maximum value = 180; Major unit = 30; Minor unit = 10; and Crosses at -180.

The graph should now look something like this:



You are now ready to set a prepared world map as the background to see where these earthquakes actually take place. This is done by right clicking in the plot area, and choosing "Format Plot Area." Next click on Fill Effects and select the Picture tab. Then click on Select Picture and locate the world_map.gif file you saved to your desktop. Select OK and then OK again, and your plot area should look similar to the following:







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