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== Calculation method ==
 
== Calculation method ==
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The entire calculation method for the logistics impact is put into a spreadsheet: [https://docs.google.com/spreadsheets/d/1wPVzY8d1otgguHZ0Qd2jIStRpVpnsGPbFv91fMasQkc/edit?usp=sharing here]. The details of each worksheet of this spreadsheet will be explained below. This spreadsheet format should allow to make changes easier and see the impact of these changes.
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=== Required data ===
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The spreadsheet is setup is such a way, that the environmental impact of logistics can be calculated for any territory or country in the world.
The relevant spreadsheet can be found [https://docs.google.com/spreadsheets/d/1wPVzY8d1otgguHZ0Qd2jIStRpVpnsGPbFv91fMasQkc/edit?usp=sharing here].
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==== Centroid sheet ====
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The centroid sheet lists the centroid for each country in the world.  
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==== Country geographic centers ====
   
The centroids can be found [http://worldmap.harvard.edu/data/geonode:country_centroids_az8 here]. In order to be able to calculate distances by road through OpenStreetMap, we need identify the closest town to this centroid.
 
The centroids can be found [http://worldmap.harvard.edu/data/geonode:country_centroids_az8 here]. In order to be able to calculate distances by road through OpenStreetMap, we need identify the closest town to this centroid.
  
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