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
Q

Overlay

A

Two or more maps or layers are superimposed for showing relationships between features

26
Q

Vector Overlay Tools

A

Identity; intersect; symmetrical difference, union, update

27
Q

Identity

A

Input features, split by overlay features

28
Q

Intersect

A

Only features common to all input layers

29
Q

Symmetrical Difference

A

Features common to either input layer or overlay, but not both

30
Q

Union

A

All input features

31
Q

Update

A

Input feature geometry replaced by update layer

32
Q

Raster Overlay Tools

A

Zonal statistics combine, single output map algebra, weighted overlay, and weighted sum.

33
Q

Zonal Statistics

A

Summarizes values in a raster layer by zone (categories) in another layer; For example, calculate the mean elevation for each vegetation category.

34
Q

Combine

A

Assigns a value to each cell in the output layer based on unique combinations of values from several input layers.

35
Q

Single Output Map Algebra

A

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
Q

Weighted Overlay

A

Automates the raster overlay process and let you assign weights to each layer before adding

37
Q

Weighted Sum

A

Overlays several rasters multiply each by their given weight and sum them together

38
Q

Map Algebra

A

Various functions performed on cells based on neighboring cells for raster datasets.

39
Q

Local operations

A

Combine rasters that ovelay each other

40
Q

Global operations

A

apply a formula to all cells

41
Q

Focal operations

A

calculates a value based on all neighboring cells

42
Q

Zonal operations

A

computing a value based on cells in a particular zone

43
Q

Descriptive statistics

A

The discipline of quantitatively describing the main features of a collection of information (e.g. summarizing a sample to learn about the population)

44
Q

Summary statistics

A

Used to summarize a set of observations