3161 Overlay
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Overlay BUFFER UNION IDENTITY
Overlay
INTERSECT
URP 3161: Geographical Information System
Ahsanul Kabir
BUFFER creates buffer polygons around specified input coverage features. Available at: ARC
Overlay
BUFFER {buffer_item} {buffer_table} {buffer_distance} {fuzzy_tolerance} {LINE | POLY | POINT | NODE} {ROUND | FLAT} {FULL | LEFT | RIGHT}
100 1
- Polygon(s) representing a buffer zone - Polygon(s) outside the buffer zone
URP 3161: Geographical Information System
Ahsanul Kabir
Union computes the geometric intersection of two polygon coverages. All polygons from both coverages will be split at their intersections and preserved in the output coverage.
Overlay
UNION {fuzzy_tolerance} {JOIN | NOJOIN}
URP 3161: Geographical Information System
Ahsanul Kabir
Overlay
Union
URP 3161: Geographical Information System
Ahsanul Kabir
Union
Overlay
UNION creates a new region coverage by overlaying two sets of regions. In the figure below, the input coverage contains regions A and B. The union coverage contains regions C and D. The output coverage contains all four regions.
URP 3161: Geographical Information System
Ahsanul Kabir
Identity computes the geometric intersection of two coverages. All features of the input coverage, as well as those features of the identity coverage that overlap the input coverage, are preserved in the output coverage.
Overlay
IDENTITY {POLY | LINE | POINT} {fuzzy_tolerance} {JOIN | NOJOIN}
URP 3161: Geographical Information System
Ahsanul Kabir
Overlay
Identity
URP 3161: Geographical Information System
Ahsanul Kabir
Intersect computes the geometric intersection of two coverages. Only those features in the area common to both coverages will be preserved in the output coverage.
Overlay
INTERSECT {POLY | LINE | POINT} {fuzzy_tolerance} {JOIN | NOJOIN}
URP 3161: Geographical Information System
Ahsanul Kabir
Overlay
Intersect
URP 3161: Geographical Information System
Ahsanul Kabir
Overlay
INTERSECT
URP 3161: Geographical Information System
Ahsanul Kabir
BUFFER creates buffer polygons around specified input coverage features. Available at: ARC
Overlay
BUFFER
100 1
- Polygon(s) representing a buffer zone - Polygon(s) outside the buffer zone
URP 3161: Geographical Information System
Ahsanul Kabir
Union computes the geometric intersection of two polygon coverages. All polygons from both coverages will be split at their intersections and preserved in the output coverage.
Overlay
UNION
URP 3161: Geographical Information System
Ahsanul Kabir
Overlay
Union
URP 3161: Geographical Information System
Ahsanul Kabir
Union
Overlay
UNION creates a new region coverage by overlaying two sets of regions. In the figure below, the input coverage contains regions A and B. The union coverage contains regions C and D. The output coverage contains all four regions.
URP 3161: Geographical Information System
Ahsanul Kabir
Identity computes the geometric intersection of two coverages. All features of the input coverage, as well as those features of the identity coverage that overlap the input coverage, are preserved in the output coverage.
Overlay
IDENTITY
URP 3161: Geographical Information System
Ahsanul Kabir
Overlay
Identity
URP 3161: Geographical Information System
Ahsanul Kabir
Intersect computes the geometric intersection of two coverages. Only those features in the area common to both coverages will be preserved in the output coverage.
Overlay
INTERSECT
URP 3161: Geographical Information System
Ahsanul Kabir
Overlay
Intersect
URP 3161: Geographical Information System
Ahsanul Kabir
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