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Flashcards in Exam 2 Deck (26)
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0

Formula for determining size of a proportional symbol map?

Area1/area2=value1/value2

1

API

Application Programming Interface.
Allows for different web programming languages to communicate with eachother.

2

Bertin's Visual Variable

Address visual variable use
Shape, hue, value, orientation, texture, and size

3

Under stand hex colors

#rrggbb

4

Quantile Classification

Different symbols or shades have different values

5

Quantitative Color Schemes

Colors represent different numerical value

6

Ordinal Measurements

Quantitative value that can't be expressed with numbers i.e. Happiness

7

D3

Data Driven Documents

8

GeoJSON

Spatial data type used in web mapmaking. Slightly smaller file sizes than KML. More intuitive than XML. Easy to control/manipulate with JavaScript

9

Tobler

"Everything is related to everything else, but near things are more related to each other" 1970

10

Tweening

Interpolating movement between key frames

11

DOM

Document object model. A convention of nested tags. Allows d3 to dynamically access and update the structure, content, and style of a document

12

Rate of change

Magnitude of an attribute/duration=roc

13

Apparent magnitude scaling (flannery)

In a Graduated symbol map and flow map, correction factors are applied to compensate for map readers' underestimation of symbol's area or volume

14

Territorial domain

Area that doesn't appear on the map around the spatial proximity of the dot.

15

Data needed for a flow map?

Raw or ratio data without negative values

16

Doing cartogram

Circles

17

Directional distributive flow map

Quantitative thematic

18

Difference between topoJSON and GeoJSON?

Topo eliminates redundancy in geo and is lighter by referring to arcs rather than nodes

19

How to divide into classes with quantile classification?

Equal number of variables in each class

20

Hue

Range 0-360 like on color wheel

21

redundant coding

Representing info in more than one way so that map readers have more than one opportunity to understand it. Color and volume to rep flow

22

Enumeration units

Statistic or administrative areas that are bounded, classified, or aggregated im thematic maps

23

Gestalt effect

Where brain recognizes whole forms in a graphical image instead of just collections of simpler and unrelated elements (points lines polygons)

24

CSS comment?

/* fuck my life */

25

How many standard parallels are in each State Plane Zone?

2