Spatial Measurement Flashcards
2 types of knowledge and what they are
Codified - written down and transferred with ease
Tacit - slow to acquire and difficult to transfer
Knowledge and information differ in 3 ways
- knowledge needs a knower
- knowledge is harder to detached from the knower
- knowledge requires us to digest it
Time’s role in spatial data
tracks changes over time
aids in historial analysis
future predictions
what is measurement
the quantification attributes of an object or an event to compare and communicate
4 Stevens levels of measurement
nominal
ordinal
interval
ratio
Nominal level
no inherent order or ranking
list of things in no order
equal to or not equal to
Ordinal level
clear order or ranking
educational levels, satisfaction scale
equality, inequality and ranking
Interval level
meaningful intervals between values but no meaningful 0
temp in c or f
equality, inequality, ranking, addiction, and subtraction
Ratio level
meaningful intervals and a true meaningful 0
all arithmetic operations
age, height, weight, income
equality, inequality, addition, subtraction, multiplication, and division
Extensive measurement and representationalism
extensiveness is the degree to which measurement comprehensively covers all relevant aspects of the concept being measured
representationalism emphasizes the accuracy to which the measurement represents
Geospatial data
Subset of spatial - stuff close to surface of earth
GI scientific method needs
Transparency
Objectivity
Reproducible
Valid
Discrete vs continuous
discrete individually separate, countable, can be sorted
continuous are measured, cannot be sorted, an unbroken whole
Derived scales are also called ____ and are….
intensive, have an arbitrary 0
