Mapping Skillshare with School of Data
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Transcript of Mapping Skillshare with School of Data
MappingWorld
PRESENTED BYCodrina Maria [email protected]
Summary
● Mapping. Super short introduction● What kind of data can one map? ● Looking at one’s data● Tools to make beautiful maps● Resources
So what will we be talking about?
So..what is mapping all about?first maps looked like this…
OLAUS MAGNUS, 1539 Carta Marina
And our interaction with them, like this..
Elizabeth I of England (1533 - 1603)
Today, our maps are a little bit different…
And the interaction seems to have changed too..
Is my data ‘map-able’ ?
Do you have a location related info? Then, YES, it is map-able.
But…Maps are useful when significant information is added through spatial correlations and analysis.
Is a map the best way to visualize my data?
Looking at the data
● Data interpretation gives knowledge (meaning)● Steps to build the best map ever: put all your information on it and then start removing what (YOU) consider is not significant for the purpose of the map.● Understand what you map!
Data is neutral!
What?! They are both correct?!Mathematically, yes.
Data can be:● sequential 1,2,3,4,5..● diverging -2,-1,0,1,2● qualitative white, blue,
red
types of data – forms of mapsLooking at the data
Maps can be:● Choropleth● Isopleth● Proportional symbols● Dot maps
Metadata!
The same dataset is mapped. The number of classes and the division method are the same. The only different thing is the projection and the form of map
The impression of ‘being on top’ is given by visual contrast.
Visual hierarchy
● Geographical elements! ( such as name places)● Correct position of what you manually placed on your map + geocoded● Topology (no duplicates, no silver polygons)● Have you removed all unnecessary information ?● What about cartographic elements? Projection, color, legend, scale● Data attribution!
Map data check
Mapping toolsFree and Open Source tools
Resources - Open (geo)data portals http://www.naturalearthdata.com/
Free vector and raster map data at 1:10m, 1:50m, and 1:110m scaleshttp://www.geonames.org/
The GeoNames geographical database covers all countries and contains over eight million place names that are available for download free of charge.
http://www.eionet.europa.eu/aboutThe official EU geoportal for environmental data
http://data.un.org/ The United Nations database
http://publicdata.eu/a Pan European data portal, providing access to open, freely reusable
datasets from local, regional and national public bodies across Europe.
A map is the most scientific work of art one can truly hope for. Thank
you!