UC DAVIS GIS LDA/ABT150 final

Three major sources of error in GPS measurement are:

• Satellite, receiver, atmosphere

• Satellite, and ground control stations

• Receiver, and atomic clocks

• Ionosphere, troposphere, and atmosphere

Which ONE of the following is NOT a function of editing

• creating new features in a feature class

• modifying the shape or location of existing features in a feature class

• entering or modifying attribute values in a table

• changing the coordinate system of a feature class

Which one of the following selection types is equivalent to the Boolean AND operator?

• New selection

• Add to the current selection

• remove from the current selection

• Select subset from current selection

• switch the current selection

Map algebra is a technique for

• analyzing stacks of raster maps using mathematical or Boolean operators

• determining the densities of points in a dataset

• resampling rasters so that they have the same cell size

• determining the minimum, maximum, and average values in a raster

what raster function would you use to find the areas of a slope raster that exceed 20 degrees?

• Aspect

• Slope

• Zonal Statistics

• Raster Calculator

Estimating values for a new raster between measurements taken at point locations uses the what function?

• Neighborhood Statistics

• Interpolation

• Zonal Satistics

• Density

Select the definition of the term "reclassify function"

• replaces sets or ranges of values in a raster with different sets of values

• counts the number of occurrences in a circle of specified size

• estimates raster cell values between known point measurements

• calculates a value for a target cell based on surrounding values in a defined region

What is the scale of the remote sensing data library within Google Earth Engine (GEE)?

• It holds gigabytes of regional geospatial data.

• It comprises terabytes of continental-scale geospatial data.

• It encompasses petabytes of global remote sensing data, including satellite images and aerial photographs.

• It contains megabytes of localized mapping information.

How does Google Earth Engine (GEE) process and analyze geospatial data?

• It operates solely through desktop GIS applications

• It works with manual, physical map adjustments.

• It uses an SQL database query system to compile geospatial statistics for download.

• It functions via a JavaScript API for server-side data processing and analysis

Explain the importance of editing in GIS.