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9. Create and Edit Personal Map Data > 9.2. Preprocessing Data Examples

Preprocessing Data Examples

Projects in this chapter focus on the city of Kelowna, Canada. In the summer of 2003, there were massive fires in the area. It was a very destructive fire season, destroying many homes. This area is used as a case study throughout the rest of this chapter as you work through a personal mapping project in the area. Many of the typical problems, like trying to find good base map data, are discussed.

In order to use base map data, you need to do some data preprocessing. This often involves clipping out areas of interest or projecting information into a common coordinate system.

Clipping Out an Area of Interest

The satellite image used for this project covered a much broader area than was needed. Unnecessary portions of the image were clipped off, speeding up loading and making the image a more manageable size.


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