Mapping & Symbology Flashcards
What are the typical symbols for line data?
Linear Symbols
What are the typical symbols for polygon data?
Symbols with shaded interior
What type of color system is used for printing?
CMYK (Cyan, Magenta, Yellow, Black)
What are 2 types of digital color systems?
RGB (red green blue) & HSV (hue saturation value)
What are 3 color schemes for representing data?
Category (different hues), Quantity (different shades), Divergent (shades of 2 different colors)
What are ways to represent changes in quantity with symbology?
Symbol size, Line thickness, Color
What is the 1st step of map design?
Develop an objective for the map
What are 4 key questions to ask when defining an objective for a map?
What is the Purpose? Audience? Medium? And under what conditions will it be viewed?
What are some of the objectives that maps can serve?
Locating, Analyzing, Navigating, Compiling, Convincing, Comparing
What are some things to consider when assessing the audience?
Who is the target audience, what is their level of knowledge? Any accommodations such as color blindness or large print.
What are things to consider when assessing a map’s conditions of use?
Viewer’s distance from map? dim lighting? Is it being used for data collection?
What is the 2nd step of map design?
Selecting Data
What are some important considerations about selecting data
-Make sure all data is supporting the objective, get rid of any unimportant data
-Make sure data doesn’t have unintended consequences or privacy issues.
-Make sure data is appropriate (scale, accuracy, etc)
What is cartographic generalization?
Generalizations done to make viewing simpler while keeping the underlying spatial data intact
Describe the generalization: Refine
Omit certain details from features
Describe the generalization: Simplify
Applies to line or polygons.
remove vertices to smooth details
Describe the generalization: Aggregate
Combine smaller features into larger ones
Describe the generalization: Collapse
Turn features into simpler forms
Describe the generalization: Classify
Combine a detailed set of attributes into simpler sets
Describe the generalization: Exaggerate
Increase prominence of an important feature
Describe the generalization: Displace
Displace features so that they don’t run over each other
Describe the generalization: Typify
Use representative rather than actual features
Describe the map element: graticules grids
Longitude & latitude lines on the map
