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GISP - Final terms to study With Questions And 100% ALL SURE ANSWERS
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GISP - Final terms to study With Questions And 100% ALL SURE ANSWERS
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JACKLINEGISP - Final terms to study With Questions And 100% ALL SURE ANSWERS
Pre
Terms in this set (100)
Summarizes values in a raster layer by zones (categories) in another layer—for example, calculate the
Zonal Statistics (Raster Overlay Tool)
mean elevation for each vegetation category
Assigns a value to each cell in the output layer based on unique combinations of values from several
Combine (Raster Overlay Tool)
input layers.
Raster Overlay Tools Zonal Statistics, Combine, Single Output Map Algebra, Weighted Overlay, Weighted Sum
lets you combine multiple raster layers using an expression you enter - ex. you can add several
Single Output Map Algebra (Raster Overlay Tool)
ranked layers to create an overall ranking
automates the raster overlay process and lets you assign weights to each layer before adding (you
weighted overlay (Raster Overlay Tool)
can also specify equal influence to create an unweighted overlay)
Weighted Sum (Raster Overlay Tool) overlays several rasters multiplying each by their given weight and summing them together
GISP - Final terms to study
, Join combine two attribute tables into one using a common key between tables
Merge combines multiple input datasets of the same data type into a single new output
Append combines datasets of the same data type into an existing dataset
Union Combines input features with another feature dataset
Clip Extracts input features that overlay the clip features (keeps inputs attributes)
Intersect extracts features which overlap in all layers to new feature class ( joins attribute tables)
less accurate Generalization will cause data to be...
Small Scale Generalization is typically used for what scale maps?
Selection, removing detail, simplification, dissolve/merge, aggregation and exaggeration are all
Generalization
types of...
Aggregating zones of data Nibble, shrink, expand, region group and thin are all examples of what type of generalization?
Smoothing data edges Boundary Clean and Majority Filter are all examples of what type of generalization?
Aggregate reducing the resolution of a raster (generalization)
Map Algebra involves doing math with maps.
Raster Map Algebra only applies to what kind of GIS?
local, focal, zonal, and global Types of Map Algebra
Map Algebra local, focal, zonal and global are different types of what?
The simplest approach is map algebra on a cell-by-cell basis. For example, you have 2 rasters
stacked on top of each other. Then, you add each cell one-by-one.
Local Operations (Map Algebra)
If raster cells represent temperature, you can subtract them both at different time periods. You can
find the difference in temperature for each cell.
GISP - Final terms to study
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