Flashcards in Exam 2 Deck (26)
Formula for determining size of a proportional symbol map?
Application Programming Interface.
Allows for different web programming languages to communicate with eachother.
Bertin's Visual Variable
Address visual variable use
Shape, hue, value, orientation, texture, and size
Under stand hex colors
Different symbols or shades have different values
Quantitative Color Schemes
Colors represent different numerical value
Quantitative value that can't be expressed with numbers i.e. Happiness
Data Driven Documents
"Everything is related to everything else, but near things are more related to each other" 1970
Interpolating movement between key frames
Document object model. A convention of nested tags. Allows d3 to dynamically access and update the structure, content, and style of a document
Rate of change
Magnitude of an attribute/duration=roc
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
Area that doesn't appear on the map around the spatial proximity of the dot.
Data needed for a flow map?
Raw or ratio data without negative values
Directional distributive flow map
Difference between topoJSON and GeoJSON?
Topo eliminates redundancy in geo and is lighter by referring to arcs rather than nodes
How to divide into classes with quantile classification?
Equal number of variables in each class
Range 0-360 like on color wheel
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
Statistic or administrative areas that are bounded, classified, or aggregated im thematic maps
Where brain recognizes whole forms in a graphical image instead of just collections of simpler and unrelated elements (points lines polygons)
/* fuck my life */