L6 Geog, maps, media Flashcards
(50 cards)
who was John Snow?
doctor during London cholera outbreak 1854
what did John Snow do?
used maps to determine outbreak was from water not the air
maps are a great example of data ….
visualisation
when are maps recommended to only be used?
when specific locations or geographical patterns are most important
we use maps to pin point specific?
locations i.e. a state
maps show …………. between different places
connections
choropleths = used to…
show data through various shading patterns
example of a choropleth map =
different states in different colours depending on who they voted for
in choropleths what is very important?
colour - shows different things
what are choropleths prone to leading to?
ecological fallacy
what can colour sometimes accidentally do?
distract from the actual data
how can colour sometimes distract from the actual data?
may make the wrong bits seem more important
heat maps =
graphical representations of data, where values are depicted by colour
what are heat maps similar to?
choropleths
different shading patterns in heat maps show how things?
vary
are hex maps good to use?
yes
pros of a hex map = (4)
- hexagons fit perfectly
- visually appealing
- good at showing variations in density
- uses real geographical space
distribution maps are what type of maps?
thematic
distribution maps are used to represent…
the distribution of particular geographical elements within a region
hex cartograms are a map …
alternative
hex cartograms =
each shape is reconstructed from a discrete tessellation of space (squares / hexagons)
what does each cell in a hex cartogram represent?
a value of a variable
what are hex cartograms also known as?
mosaic cartograms
what shape does the overall hex cartogram typically attempt to end up being?
the original shape
- i.e. the country such as USA
