Map Layers

What is a map layer?

A map layer represents a particular theme of geographic data, such as roads, parcels, streams, or city boundaries. These themes of data are then stacked upon one another, or layered, showing how they all relate to one another.

OneView map layers

Map layers are accessed through the Layers tool layers-tool in the OneView toolbar. Layers can be turned off/on and made more/less transparent. Through the “Basemap” button, different basemap layers can be chosen. The map legend can also be viewed through the “Legend” button.

_images/map-layers.png

Note

The Legend respects what layers are currently visible in the application.

Basemap layers

OneView contains basemap layers of aerial imagery for Walworth County for the following years:

  • 2015 (default basemap)
  • 2010
  • 2005
  • 1995
  • 1990
  • 1985
  • 1980
  • 1975
  • 1970
  • 1963
  • 1956
  • 1940
_images/map-layers-basemaps.png

Basemap layers available.

Single-clicking a year will change the basemap to that year.

_images/map-layers-basemap-1940.png

Clicking 1940 Imagery changes the basemap to imagery for that year.