Scale & Detail

Simplify without distortion

If you use GIS data for linear features, the data may be more precise than necessary for your map’s purpose.

Simplify features that show lines (polylines and polygons) so that vertices do not pile up on each other and create the appearance of blotches and fills. When you simplify, take care not to distort the topology or topography of the geographic features.

For example, be careful not to transform narrow but deep bays along shorelines into inland lakes. When simplifying line features, preview the changes before you make them and focus your preview extent on an area of the map with features that are susceptible to distortion, like narrow bays on a shoreline. Choose the appropriate balance that simplifies the feature without distorting topological or topographical properties.