Gis Book Chapter 1 Answers

GIS for Professionals 673

Lab – 1

2. Does Arc Map draw the top layer in the table of contents first?

No, the top of the table content have to be drawn on the displayed map last.

3. List the other classification method besides Manual that are available in Arc Map.?

Equal Interval— range of cell values is divided into equally sized classes, specify the number of classes.

Defined Interval— specify an interval to divide the range of cell values, determines the number of classes.

Quantile— each class contains an equal number of cells.

Natural Breaks — classes are based on natural groupings of values.

Standard Deviation— amount a cell’s value varies from the mean.

a. Distinguish between GIS,GPS,and RS.

GIS | GPS | RS |

Geographic information science | Global positioning system | Remote sensing |

A computer system for capturing, storing, querying, analyzing and displaying geospatial data.This is a computer based system for storing and processing geographic information.An integrated collection of computer software and data used to view and manage information about geographic places, analyze spatial relationship, and model spatial proses. | Space-based global navigation satellite system. It provides reliable positioning, navigation, and timing services to worldwide users on a continuous basis in all weather, day and night, any whereon or near the Earth. | Remote sensing is the science of acquiring information about the earth’s surface without actually being in contact with it. This is done by sensing and recording reflected or emitted energy and processing, analyzing and applying that information.This is use of satellite and aircraft to capture information about the earth surface. |

A working Geographic Information System seamlessly integrates five key components:HardwareSoftwareDataPeopleInfrastructureGIS represent geospatial data as either vector data or raster data. | GPS is made up of three parts: between 24 and 32 satellites orbiting...