in the trenches
TRANSCRIPT
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the what
things you won’t learn at school
geo-survival techniques
musings on the geo industry
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the how
words
pictures
video
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the who
Engineering – software engineering
Academia – remote sensing
Municipal government – address data cleansing
Natural resource consulting – GIS analysis & dev
(not actually “the who” unfortunately)
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journey
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lessons in production GIS
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1. GIS is data
making data
asking questions about data
helping others understand data
that’s good though, there is a lot of data!
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2. data is never “good”
even if you think it is, its not
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Dude, that’s not on the
map!
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geo-survival technique:
learn data quality diagnosis heuristics
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common data problems (technical)
spatial reference system (lost)
attributes (missing)
geometry (broken)
computing (knowledge)
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what’s up this, GIS wizard?
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zoom to all…
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are there any records?
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ok, zoom to roads…
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clues, if you need them…
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typical data quality workflow
are there any records? - zoom to all, zoom to layer, open attribute table
where (on earth) are they? - look at coordinates, remove coordinate system from data frame
is it GPS data? - (x,y) vs. (lat, long)
is it a shape file?- do you have all the pieces, has the dbf been edited
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geo-survival technique:
remember the reality check
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Oh, that’s just Alberta. They think they are
above the rest of us.
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3. be organised
…not just organised, but…
ORGANISE
D!
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we make data, lots and lots of data
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data management
keep your project data separated from your “good stuff”
keep your project data safe
keep your good stuff safer
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geo-survival technique:
learn to keep things organised and clean
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4. tell a story
cartography is biased
data is flawed
analysis is subjective
understand first, the story you want to tell
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geo-survival technique:
ask lots of questions
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hot or not?
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hot or not?
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hot or not?
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hot or not?
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hot or not?
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hot or not?
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hot or not?
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hot or not?