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Design principles applied to map design & usability
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Sergio Álvarez Leiva
October 01, 2011
Design
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Design principles applied to map design & usability
Keynote for my session at #FOSS4G 2011
Sergio Álvarez Leiva
October 01, 2011
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Transcript
Hello,
vizzuality Lead designer & co-founder
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15 Design principles you should apply *always*
_Classical Conditioning A technique used to associate a stimulus with
an unconscious physical or emotional response.
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_Aesthetic Effect Aesthetic designs are *perceived* as easier to use
and better, than less-aesthetic designs.
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NIXON
KENNEDY
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_Golden Ratio A ration within the elements of a form,
such a height to width, approximating 0.618.
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_Forms follow function Form in design results from purity of
function.
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You can find this map at mapbox.com
You can find this map at mapbox.com
_Affordance A property in which physical characteristics of an object
or environment influence its function.
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Pull
Push
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_Consistency & Constraint The usability of a system is improved
when similar parts are expresed in similar ways.
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Zoom & movement controls Layers
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_Fitt's law The time required to move to a target
is a function of the target size and distance to the target - plus the precision needed -.
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_Forgiveness Designs should help people avoid errors and minimize the
negative consequences of errors when they do occur.
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_Use of Color Color is used in design to attract
attention, group elements, indicate meaning, and enhance aesthetics.
__Number of colors No more than 4-5 colors.
You can find this map at mapbox.com
__Color combinations Something aesthetic please. Protip! colorbrewer2.org
__Saturation More saturated for attracting attention. More saturated more eye
fatigue.
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__Meaning Analyze your colors meaning before aplying them.
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_Interference Effects A phenomenon in which mental processing is made
slower and less accurate by competing mental processes.
Black Red Yellow Purple Green Blue Yellow Red White White
Blue Green Black Brown Orange Green Orange Yellow Red
_Nudge A method for predictably altering behavior without restricting options
or signicantly changing incentives.
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_Inantentional Blindness The failure to cognitively process a stimulus that
is presented in clear view, leaving the observer without any awareness or memory of the stimulus.
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_Progressive disclosure A strategy for managing information complexity in which
only necessary or requested information is displayed at any given time.
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_Visibility The usability of a system is improved when its
status and methods of use are clearly visible.
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Thank you! @saleiva
[email protected]
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_Framing A technique that influences decision making and judgement by
manipulating the way information is presented.
Gas kills over 100 Hostages “
“ Gas saves over 500 hostages
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