gis lesson 3

27問 • 2年前

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問題一覧

provides a framework and tools for performing analysis and managing geographic data

geoprocessing

two primary uses of geoprocessing

automating GIS tasks, analysis and modeling

perform specific task or chain together sequences of tools

geoprocessing

7 geoprocessing tools

clip, intersect, union, merge, dissolve, buffer, erase

extracts a subset of one feature class using one or more of the features in another feature class

clip

features or portions of features which overlap in all layers and/or feature classes will be written to the output feature class

intersect

used to know the area in common among multiple feature classes

intersect

useful when conducting a land use and land cover change analysis across different periods

intersect

all features and their attributes will be written to the output feature class

union

output feature class will have all features from the input data, including attributes

union

combines multiple input feature classes of the same data type into a single, new output feature class

merge

tends to aggregate features based on specific attributes

dissolve

creates an area specified distance

buffer

only those portions of the input features falling outside the boundaries are copied to the output feature class

erase

attributes of the original features are preserved in the output feature class

clip

useful when your input datasets have different attribute structures

union

output feature class will have all features from the input data, including attributes.

union

create new polygons if the input feature classes contain overlapping features

union

useful when your input feature classes have the same attribute structure

merge

output feature class will have the same attribute structure as the input data and contain the features from both feature classes

merge

what

clip

what

intersect

what

union

what

merge

what

dissolve

what

buffer

what

erase

gis lesson 2

gis lesson 2

nrc topic 6

nrc topic 6

gis lesson 1

gis lesson 1

gis lesson 4

gis lesson 4

fmh

fmh

tbm

tbm

ethics ch2

ethics ch2

ethics ch1.5-6

ethics ch1.5-6

ch1

ch1

ch1

ch1

topic 1

topic 1

問題一覧

provides a framework and tools for performing analysis and managing geographic data

geoprocessing

two primary uses of geoprocessing

automating GIS tasks, analysis and modeling

perform specific task or chain together sequences of tools

geoprocessing

7 geoprocessing tools

clip, intersect, union, merge, dissolve, buffer, erase

extracts a subset of one feature class using one or more of the features in another feature class

clip

features or portions of features which overlap in all layers and/or feature classes will be written to the output feature class

intersect

used to know the area in common among multiple feature classes

intersect

useful when conducting a land use and land cover change analysis across different periods

intersect

all features and their attributes will be written to the output feature class

union

output feature class will have all features from the input data, including attributes

union

combines multiple input feature classes of the same data type into a single, new output feature class

merge

tends to aggregate features based on specific attributes

dissolve

creates an area specified distance

buffer

only those portions of the input features falling outside the boundaries are copied to the output feature class

erase

attributes of the original features are preserved in the output feature class

clip

useful when your input datasets have different attribute structures

union

output feature class will have all features from the input data, including attributes.

union

create new polygons if the input feature classes contain overlapping features

union

useful when your input feature classes have the same attribute structure

merge

output feature class will have the same attribute structure as the input data and contain the features from both feature classes

merge

what

clip

what

intersect

what

union

what

merge

what

dissolve

what

buffer

what

erase