Question

In the Arc Gis software, state and briefly describe four functions of the basemap.

Answer 1

Hello Student

The functions of base map are:

1. A base map is used to refer a location.

A base map provides a reference map for your world and a context for the content you want to display in a map. When you create a new map, you can choose which base map you want to use. Change the base map of your current map at any time by choosing from the base map gallery or using your own base map.

2.A base map  provides a framework on which users overlay or mash up their operational layers.

For Example various web services can be accessed and assembled as part of your web GIS application's base map service, operational map services, geoprocessing services, geodata services, image services and so on.

IN web map you will use a base map on top of which you can layer in your operational GIS layers. Operational layers refer to the map layers that your end users will work with such as layers that you edit or make notes on, layers that represent observations and sensor readings, layers that result from analytical models, and results from map queries.

3.A base map perform tasks.

For Example A base map can be used to help reach a decision about the location of a new housing development that has minimal environmental impact, is located in a low-risk area, and is close to a population centre. The information can be presented succinctly and clearly in the form of a map and accompanying report, allowing decision makers to focus on the real issues rather than trying to understand the data.

4, A base map is used to  visualize geographic information.

IN web map you will use a base map on top of which you can layer in your operational GIS layers. Operational layers refer to the map layers that your end users will work with such as layers that you edit or make notes on, layers that represent observations and sensor readings, layers that result from analytical models, and results from map queries.

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