Greece

30DayMapChallenge 2021

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This post is going to be continuously updated with submissions to the 2021 #30DayMapChallenge. The code for all plots is on GitHub.

Day 1, points

For day 1, I used an older dataset about heating degree days in Greece with about 160k points.

Map of Greece showing the total heating degree days in Greece. Base temperature 15 C. Measurements from 47 weather stations 1997-2002.

Day 2, lines

Ferry lines in Greece.

Day 3, polygons

Another quick one, this is about the wildlife sanctuaries in Greece, trying a fill pattern with {ggpattern}.

Day 4, hexagons

A hex map of populated places in Greece that contain the words Saint, Santa or Holy (Άγιος, Αγία, Άγιο).

Day 5, OpenStreetMap

Speed limits in Thessaloniki, Greece

Day 6, red

Average max temperature of warmest month in Greece, 1970-2000

Day 7, green

NDVI for Greece with a touch of 3d. Both today's and yesterday's script were modifications of scripts in the great tutorials at https://rspatialdata.github.io

Day 8, blue

Mapping the depth of the sea around Greece with bathymetric data from NOAA.

Day 9, monochrome

A 3d render of Greece in Cinema 4D with data from CGIAR-CSI SRTM

Day 10, raster

Population density in Africa with raster data from the afrimapr R package.

Here is the same map with a scico palette and pseudologarithmic color scale:

Day 12, population

A cartogram about the 2011 Greek census, data from the Hellenic Statistical Authority

Day 13, Natural Earth

Day 14, map with a new tool

GeoJSON as ASCII in a very zoomed out terminal window

Code: geotype greece.geojson -z 13

Day 16, ubran/rural.

Changes in degree of urbanisation in Greece with data from Eurostat. Only small changes since the data is from 2018 and 2021.

Day 18, water

Coastal land areas and costal water bodies of Greece. Data from Eurostat and http://geodata.gov.gr

Day 19, island(s)

Ferry routes between Greek islands. I took the ferry routes from day 2 and clipped the lines that intersected mainland Greece and the neighboring countries.

Day 20, movement.

Passenger ship movement around Greece (I too wanted to use the ship movement dataset from The World Bank)

Day 21, elevation

Started in #RStats following the tutorial at https://rspatialdata.github.io/elevation.html but then decided to try 3d. This might be my first Blender render, quite happy with the result.

Day 22, boundaries

Tectonic plates and significant earthquakes in Greece

Days 25, interactive, and 26, choropleth

Prices of unleaded 95 RON by prefecture in Greece, using mapdeck for the first time. Short video on Twitter

Days 27, heatmap

Density of restaurants in Greece with data from OpenStreetMap

Day 28, the Earth is not flat

Longitude of the centroids of the world's countries on a circle