O'Reilly logo

Mapping with ArcGIS Pro by Ryan Malhoski, Amy Rock

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Grid

A grid or fishnet map is a basic way of aggregating data into equal areas across your map. It is a method that has been used for a long time as it is easy on the eyes and is easy for the viewer to understand patterns that show up. You would use a grid map to show non-continuous data over an area where each data point has no influence on the other. While a grid is easy to make and understand, it creates a problem in sampling data. The corners of a cell in a grid are further away from the center of the cell than the midpoint of the side of a cell to the center. This is a problem because you are aggregating data in a non-uniform distance. Take a look at the following figure for a visualization:

Figure 6.11: Square cell with distances from ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required