Analytical Methods Flashcards

1
Q

Contains

A

Features contain an input polygon

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2
Q

Completely Contains

A

Features must be completely in an input polygon

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3
Q

Contains Clementini

A

Features must be completely in the input polygon but if it’s on the boundary, it will not be selected

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4
Q

Within

A

Features will be selected if completely inside a selecting polygon

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5
Q

Completely Within

A

Features will be selected if completely within selecting polygon (no overlap)

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6
Q

With Clementini

A

Features will be selected and cannot be entirely on the boundary of the feature

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7
Q

Are Identical to

A

Features are identical to input layer

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8
Q

Boundary Touches

A

Features will be selected if they have a boundary that touches selecting features (must be completely inside or outside the polygon)

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9
Q

Share a Line Segment With

A

Features selected if they share a line segment

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10
Q

Have Their Center in

A

Input features will be selected if their center falls within a selecting feature

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11
Q

Crossed by the Outline of

A

Input features will be selected if they are crossed by the outline of a selecting feature

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12
Q

Contained by

A

the same with the “Within”

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13
Q

Join

A

Combine two attribute tables into one using a common key between tables.

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14
Q

Merge

A

Combines multiple input datasets of the same data type into a single new output

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15
Q

Append

A

Combines datasets of same data type into an existing dataset

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16
Q

Union

A

Combines input features with another feature dataset

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17
Q

Clip

A

Extracts input features that overlay the clip features (keep input attributes)

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18
Q

Intersect

A

Extracts features which overlap in all layers to new feature class (join attribute tables)

19
Q

Classification

A

Equal range, quantiles, standard deviations, and natural breaks

20
Q

Equal range

A

equal distance between the class breaks

21
Q

Quantile

A

Equal number of observations in each class

22
Q

Standard Deviations

A

Class breaks based on distance of standard deviations from the mean

23
Q

Natural Breaks

A

Class breaks conform to gaps in data distribution

24
Q

Spatial Overlay

A

Process of superimposing layers of geographic data that cover the same area to study the relationship between them.

25
Overlay
Two or more maps or layers are superimposed for showing relationships between features
26
Vector Overlay Tools
Identity; intersect; symmetrical difference, union, update
27
Identity
Input features, split by overlay features
28
Intersect
Only features common to all input layers
29
Symmetrical Difference
Features common to either input layer or overlay, but not both
30
Union
All input features
31
Update
Input feature geometry replaced by update layer
32
Raster Overlay Tools
Zonal statistics combine, single output map algebra, weighted overlay, and weighted sum.
33
Zonal Statistics
Summarizes values in a raster layer by zone (categories) in another layer; For example, calculate the mean elevation for each vegetation category.
34
Combine
Assigns a value to each cell in the output layer based on unique combinations of values from several input layers.
35
Single Output Map Algebra
Let you combine multiple raster layer by using an expression you enter; For example, you can add several ranked layers to create an overall ranking.
36
Weighted Overlay
Automates the raster overlay process and let you assign weights to each layer before adding
37
Weighted Sum
Overlays several rasters multiply each by their given weight and sum them together
38
Map Algebra
Various functions performed on cells based on neighboring cells for raster datasets.
39
Local operations
Combine rasters that ovelay each other
40
Global operations
apply a formula to all cells
41
Focal operations
calculates a value based on all neighboring cells
42
Zonal operations
computing a value based on cells in a particular zone
43
Descriptive statistics
The discipline of quantitatively describing the main features of a collection of information (e.g. summarizing a sample to learn about the population)
44
Summary statistics
Used to summarize a set of observations