C I T Y O F S H E R I D A N G.I.S. Division City Hall 55 E Grinnell Plaza P.O. Box 848 Sheridan, WY 82801 Old Fire Dept Residence Annex Office Hours: 8:00 am - Noon 1:00 pm - 5:00 pm GIS Coordinator Steven Lowman Email GIS Technician OPEN at This Time Tech Job Description W H A T I S G. I. S. T he term GIS might be new to many in these parts so we would like to briefly explain what it is. GIS stands for G eographic I nformation S ystems. A GIS stores all the features you might find on a map such as roads, buildings, manholes, parks, and city boundarys. These features are stored as points, lines, polygons (areas), and cells (image pixels) in a computer. We put all the similar features into categories called themes, which are stacked on top of each other to form the map that is displayed and printed. The GIS also stores information about each feature such as road surface material, park name, parcel number, owner name, and census population figure in a database. The digital features and database are tied together so that a person can perform analysis on the map features. You can now ask; Where is it? What is it? What spatial patterns exist? What has changed since...? What if...? How many haveÂ
? S ince information on each features actual location is stored, a GIS also allows you to perform spatial analysis, which means you can overlay flood plains on top of parcels and generate a list of all landowners within the flood plain. You can find out how many people live within 500 feet of a feature or how many feet of water pipes have been constructed in corrosive soil zones. | |
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