Of Time and Place. Color Straws, Color Voxels, and Color Ramps. Robert Frost, Neither out far nor in deep .
Animated maps offer exciting possibilities for tracking spatial change over time.
They were also used as analytic tools that could employ surrogate variables to mimic change over time in variables that were difficult to learn about. Tightly spaced contours look like a jumble of spaghetti that communicate effectively only at quite a local scale. The broad picture can be difficult to grasp. All the maps in the table below are made from files from the Digital Chart of the World. The contour interval is 1000 feet.