Cartography / GIS Output
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GIS output - maps, charts,
tables
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map purpose (uses of a
map) - navigation, data storage (e.g. forest inventory), geographic communication, aid in
decision-making
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types of maps - general
reference (planimetric & topographic), thematic (to illustrate spatial
relations & patterns: soils, forest inventory, income)
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map components
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"map proper", bounded by
neatline, geo-reference
grid (UTM and/or graticule) |
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title, date, author, legend,
direction (north), scale |
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symbology, annotation |
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projection, datum, inset map
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generalization (as discussed
before) - selection, simplification, displacement, smoothing
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map design
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consider how a map is
viewed - title, spatial patterns, legend, peripheral data |
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consider map purpose -
general reference vs. thematic |
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balance - arrangement
of elements |
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hierarchy - perceived
importance
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relative size (map vs.
other elements, symbols on the map) |
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colour (dark / bright
colours standout) |
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location (eyes drawn to
centre of page) |
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figure-ground relationship
- for important features and distinguish between land-water |
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contrast - how
distinguishable are the map features (done with colour, brightness,
pattern, line weight, font size, etc.)
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Do's
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use a small number of
'related colours'
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better to use different
shades of few colours |
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'pre-made' colour ramps
use complimentary colours
- gradual change for
quantitative
- distinct change for
qualitative
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use few font types, better
to vary font size and 'boldness', also use simple font types
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annotation should be
horizontal (or vertical or follow feature)
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use plain colours /
patterns to fill large areas
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use hierarchy to clearly
communicate your intent (important elements should standout)
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remember title, 'map' and
legend are most important (supporting data should be muted)
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title should be
meaningful |
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'map' should be "front &
centre" |
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legend 'supports' map and
should not 'dominate', also needs to be clear (no filenames)
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if using a scale bar,
include units
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Do Not (Avoid)
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inappropriate colours (red
associated with danger, blue associated with calm or water) |
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overlap symbols and
annotation |
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place annotation (e.g.
place names) across important line work |
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choropleth maps
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thematic map that
classifies a quantitative value and symbolizes it using a colour or
shading scheme |
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"non-map" outputs
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cartograms - true locations
often sacrificed to enhance spatial relations (subway map, relative size of
objects-city populations) |
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3-D representation -
surfaces |
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animations
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media
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paper - static, long-lived |
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computer monitor - dynamic and
short-lived |
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web-based - dynamic and
interactive |
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