Mapping Hacks

Georeference Digital Photos #10

Chapter 1, Mapping Your Life

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HACK

curved line on a conformal projection. Because of great-circle routing, an

aircraft flying long distances would not be on a straight line for most of the

flight. The problem with this representation is that people could be easily

misled into thinking that a particular flight they are following has a problem

because it is not on the “straight line” between two cities.

—With projections help from Edward Mac Gillavry

HACK

#10

Georeference Digital Photos Hack #10

Have you ever looked at someone’s photo album and wondered where the

photos were taken? Using your GPS and digital camera, you can figure out

just that, and it’s easier than you think.

If your digital camera allows you to set the time, you can use tracklogs from

your GPS to add latitude and longitude information to your digital pictures.

Since every photo you take with your digital camera contains the time the

photo was taken, your computer can use the time a picture was taken to

look through the GPS tracklog to find out where you were when you took

Figure 1-19. Delta Flight 1598 en route to New York