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Items tagged with: 30DayMapChallenge

#30DayMapChallenge day 3 polygons
Wine map of Bordeaux🍷
data: data europa eu
tools: qgis and corel
#30DayMapChallenge

Day 3 #30dayMapChallenge polygons: Roman dioceses under the Emperor Diocletian, r. 286–305, with dioceses divided into further provinces. The boundaries of these are almost all approximate. The data comes from the Ancient World Mapping Center as it did for my day 2 maps. The diocese labels are based on centroids of the polygons and may be a bit difficult to read. Oh well.

Data: https://github.com/AWMC/geodata
Code: https://github.com/jessesadler/30daymapchallenge/blob/main/3-polygons.R

#rspatial #DigitalHumanities #DigitalHistory

GitHub - AWMC/geodata: The geodata collection of the Ancient World Mapping Center in GeoJSON format.

The geodata collection of the Ancient World Mapping Center in GeoJSON format. - GitHub - AWMC/geodata: The geodata collection of the Ancient World Mapping Center in GeoJSON format.
GitHub
#rspatial #30DayMapChallenge #digitalhumanities #digitalhistory

#30DayMapChallenge Day 3: Polygons. A map of that shows Katmai Volcano (Alaska) with hypsometric filled contours. The colour of the contour lines is adjusted to try to achieve a constant contrast. Instructions for how to make a map like this using QGIS and Python can be found on my blog: https://hkuril.com/html/en/articles/2023_qgis_filled_contours.html.
Elevation data from SRTM.

Harry Kuril: How to make filled contours in QGIS and Python

hkuril.com
#30DayMapChallenge

Last day 2 map for #30DayMapChallenge (lines) is related to this day 1 point map https://en.osm.town/@SK53/111337236337206381.

There has been a lot of interest within #OpenStreetMap about the best way to map hydrological networks and particularly if continuity should be kept through lakes.

The map shows progressive stages of pruning a straight skeleton of a couple of lakes retaining lines linked to outflows.

PS. I've played with these before sk53-osm.blogspot.com/2016/10/skeletons-in-water.html

#openstreetmap #30DayMapChallenge

#30DayMapChallenge - Day 2: Lines
DelauNations - A Delaunay triangulation of country borders 📐🗺️

Tools: #QGIS
Data: Natural Earth
#gischat
#qgis #gischat #30DayMapChallenge

🌎 #30DAyMapChallenge 2023 #day2 - #Lines
NewYork data from USDA NRCS Geospatial Data Gateway. Made with {topo.ridges} packages
Tools: #R
#rstats #datascience #Datavisualization #maps #infographics
#maps #DataScience #RStats #datavisualization #day2 #r #30DayMapChallenge #lines #infographics

Lessons learned from a stupid simple viz for #30DayMapChallenge line day (animation of a hike I took):

1) There's a v. good reason line widths are kept to 1px in webgl (hint: tessellation) https://blog.scottlogic.com/2019/11/18/drawing-lines-with-webgl.html

2) setData() in @maplibre is actually very inexpensive on cpu & easy to implement for animations

3) CSV to geojson is easy in @qgis but managing timestamps in general is hard

4) Output from challenges < lessons learned so Keep It Simple Stupid

Drawing Lines with WebGL

Connecting points on a chart with a line is one of the most basic uses of a charting library. When drawing that line in WebGL, however, it's not as straightforward as you might think.
Scott Logic
#30DayMapChallenge @QGIS @MapLibre

#30DayMapChallenge Day 2: Lines. Tanaka contour map of The Long Mynd in #Shropshire, U.K. Used #qgis and Style hub for Tanaka contour style. SRTM data.
#qgis #30DayMapChallenge #shropshire

It's still Day 1 of #30DayMapChallenge here and I have this map so rather than having it sit on my disk, here it is: Lighthouses of the world.

#rayshader adventures, an #rstats tale
#RStats #rayshader #30DayMapChallenge

Are you thinking about doing the #30DayMapChallenge, but don't know where to start? SAME.

This is why I created a brainstorming doc to organize all my ideas. Feel free to save a copy and use it for your own! More maps shared means the world is a mappier place! https://docs.google.com/spreadsheets/d/1auCdPIG1p811-MJ0CmxmmE_CVDL33yYYbMM_MjLq0SE/edit?usp=sharing

30 Day Map Challenge 2023

Brainstorming Date,Theme,Details,Brainstorming Ideas,Data Source 1,11/1/2023,Points,A map with points 2,11/2/2023,Lines,A map with lines 3,11/3/2023,Polygons,A map with polygons 4,11/4/2023,A bad map,Let's get this over with 5,11/5/2023,Analog Map,N…
Google Docs
#30DayMapChallenge

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