Gis_2

Front 1

Nominal Data

Back 1

Values that name or identify an object, such as a street name.

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Categorical Data

Back 2

Data that place objects into un-ranked groups; examples are land use or geology data.

Front 3

Numeric Data

Back 3

Values stored as numbers rather than as names or categories.

Front 4

Unique Values Maps

Back 4

A map type in which each attribute value is assigned its own symbol.

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Ordinal Data

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A data value that indicates a rank or ordering system.

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Ratio Data

Back 6

Data having a regular scale of measurement and a natural zero point, such as precipitation or population.

Front 7

Interval Data

Back 7

Values that follow a regular scale but have no natural zero point, such as degrees Celsius or pH.

Front 8

Graduated Symbol Map

Back 8

A map that divides numeric data from a line or point feature class into classes based on value and displays the classes with different size or thickness of symbols.

Front 9

Proportional Symbol Map

Back 9

A map that displays attribute values with marker or line symbols that are proportional in size relative to the value of the feature.

Front 10

Graduated Color Map

Back 10

A map that divides numeric data from a polygon feature class into classes based on value and displays the classes with different colors.

Front 11

Choropleth Map

Back 11

Maps in which each feature, such as a state, is colored according to the values in a data field.

Front 12

Normalized Data

Back 12

To divide the values of an attribute field by the total of the field or by the values in another field.

Front 13

Dot Density Map

Back 13

A map representing attribute values by a proportional number of randomly placed dots.

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Chart Map

Back 14

A map showing several different attributes in chart form, with one chart for each feature.

Front 15

Thematic Rasters

Back 15

A raster that contains categorical or nominal data values, such as land use codes or soil types.

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Discrete

Back 16

Data that take on a relatively small number of distinct values.

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Continuous

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Data that take on a variety of different values and that change rapidly across a data set, such as elevation.

Front 18

Unique Values

Back 18

A map type in which each attribute value is assigned its own symbol.

Front 19

Classified Stretched

Back 19

A raster display method that divides values into two or more groups based on their numeric values.

Front 20

Slice

Back 20

To divide the values in a raster into a specified number of even classes.

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Image Raster

Back 21

A raster data layer, usually referring to a raster that displays brightness values, as in a photograph.

Front 22

Histogram

Back 22

A graph showing the number of pixels contained for each data value in a raster.

Front 23

Colormap

Back 23

A set of defined colors matched to specific image pixel values, which determines how the image will appear.

Front 24

Classification

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Assigning features to two or more groups based on numeric values in an attribute field.

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Stretched

Back 25

A display method that spreads the data values over the entire range of symbols available.

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Jenks Method

Back 26

A way to classify numeric data into ranges defined by naturally occurring gaps in the data histogram.

Front 27

Equal Interval

Back 27

A classification method in which the user specifies a number of classes that have equal size ranges.

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Defined Interval

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A classificaiton method in which the user specifies a specific size range for all the classes.

Front 29

Quantile

Back 29

A map type in which each class has approximately the same number of features.

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Geometric Interval

Back 30

A classification method that bases the class intervals on a geometric series in which each class is multiplied by a constant coefficient to produce the next higher class.

Front 31

Standard Deviation

Back 31

A classification scheme in which the class breaks are based on the standard deviation values of the data being mapped.

Front 32

Layer

Back 32

A mode of ArcMap that is used to design and create a printed map and that allows manipulation of map layers, titles, scale bars, north arrows, and more.

Front 33

Data Frame

Back 33

Container holding layers that are viewed and analyzed together, a map view.

Front 34

Active Frame

Back 34

The data frame that is visible and responds to changes by the user.

Front 35

Source

Back 35

(1) a location that produces or initiates the flow of a commodity through a network
(2) A spatial data file that provies the features for a map layer
(3) the original information used to develop a spatial data set.

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Pathname

Back 36

A list of the folders that must be traversed to locate a particular file, such as c:/mgisdata/usa/states.shp

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Absolute Pathname

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File pathname that starts at the drive letter.

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Relative Pathname

Back 38

Path to a file that starts in the current folder.

Front 39

Data View

Back 39

Data frame mode optimized for the display and analysis of map data.

Front 40

Layout View

Back 40

A mode of ArcMap that is used to design and create a printed map and that allows manipulation of map layers, titles, scale bars, north arrows, and more.

Front 41

Dynamic Labels

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Labels determined from an attribute and placed on a map automatically each time features are drawn and redrawn.

Front 42

Pyramids

Back 42

A set of rasters with different resolutions that is calculated from a raster and used to speed displays at smaller scales.

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RGB composite

Back 43

An image displayed by assigning one band of brightness information to each red, gree, and blue color gun in a display manitor.

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Digital Raster Graphic

Back 44

(DRG) A scanned image of a USGS topographic map.