Components of GIS Questions and Answers Already Graded A

Components of GIS Questions and Answers Already Graded A What are the components of GIS? Depends on source, but in general: hardware (capabilities that affect the processing speed, ease of use, etc.), software (tools that provide the functions required to store, analyze, and display spatial data), data (core of any GIS - can be spatial or tabular), people (responsible for day-to-day operations of GIS), methods/procedures (used to analyze the data and produce accurate results) What are the main components of the geographic database? a geographic database contains geographic data for a particular area and subject, such as countries, administrative divisions, cities, and related information What is metadata? Why is metadata important? A set of data that describes and gives information about other data. It is important in providing information that is relevant or needed to help describe the file. What are the characteristics of "geographic data" (aka spatial data or geographically referenced data)? Geographic data is a collection of information that can describe objects and things with relation to space. Often this is done with x,y coordinates or longitudes and latitudes What is the meaning of "GIS data model"? Why is it needed? A GIS data model enables a computer to represent real geographic elements as graphical elements. It is a mathematical construct for representing geographic objects or surfaces as data. Name two main types of GIS data models. Raster and Vector Raster Grid-based Geography is represented as cell matrices that tore continuous values ex) temperature Vector Line-based Geography is represented as a collection of points, lines, and polygons ( discrete objects) ex) trees How to plot raster data on ArcMap? (Tips) Using the Symbology tab for low-high values, change the color scheme. Know how to use classification How to plot vector data on ArcMap? Point location with attribute table- lat/long. Once you plot points on a map, you create vector data.