GEOM1004-spatial_analysis-W22

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23 Terms

1
Vector operations
Operations that manipulate vector data, such as point, line, and polygon manipulations.
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2
Raster operations
Operations that manipulate raster data, typically involving pixel-based spatial analyses.
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3
Buffering
The creation of a polygon that is a specified distance around a point, line, or area feature.
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4
Spatial analysis
The process of analyzing spatial data to identify patterns, relationships, and trends.
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5
Local operations
Operations that work on single cell locations in raster data.
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6
Focal operations
Operations that involve cell locations within a neighborhood, using a moving window.
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7
Zonal operations
Operations that work on cell locations within defined zones.
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8
Point-in-Polygon
A vector operation used to determine if a point is inside a given polygon.
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9
Line-in-Polygon
A vector operation that assesses whether a line intersects with a polygon.
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10
Intersection (AND)
A vector operation that identifies the overlapping areas between two datasets.
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11
Union (OR)
A vector operation that combines two datasets to create a new dataset containing all areas from both.
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12
Erase (NOT)
A vector operation that removes areas of one dataset from another.
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13
Symmetrical Difference (XOR)
A vector operation that finds areas in either of two datasets but not in their intersection.
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14
Reclassification
The process of changing the values of a raster dataset based on specified criteria.
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15
Aspect
The cardinal direction that a slope faces, measured in degrees.
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16
Slope
The maximum rate of change between cell values in a raster dataset.
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17
Clipping
A vector operation that cuts out a portion of a dataset based on a specified boundary.
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18
Identity
A vector operation that returns features that overlap with the input geometries.
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19
Splitting
The process of dividing a dataset into smaller, more manageable pieces.
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20
Identity (Vector)
An operation where the features from the input layer are preserved along with the overlay features.
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21
Clipping (Raster)
The process of cutting down raster data to a specified extent.
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22
Raster Calculator
A tool used in GIS to perform calculations on raster datasets.
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23
Majority Filter
A focal operation that assigns the value based on the majority of neighboring cell values in a moving window.
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