Why Death Valley Is Full Of Polygons [salt flats, deserts, and dry lakes]
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https://physics.aps.org/articles/v16/31 <-- shared article
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https://doi.org/10.1103/PhysRevX.13.011025 <-- shared paper
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#GIS #spatial #mapping #spatialanalysis #model #modeling #salt #polygons #tiling #saltflats #saltdeserts #convection #research #chemistry #water #hydrology #soil #evaporation #evapotranspiration #precipitation #solution #salinity #DeathValley #numericalanalysis #numericalmodeling #numericalsimulation #simulation #groundwater

If you only have #road #centerlines in your #GIS data you may want to transform them into #beautifully #styled #polygons using only symbology and the useful geometry generator.

Let's see how to you can do this and make your #map beautiful!

https://www.youtube.com/watch?v=vKplD_mgD1k

This one requires goniometry

RT @sonukg4india@twitter.com

#regular #polygons
Ratio of blue and green

🐦🔗: https://twitter.com/sonukg4india/status/1608378752429592576

Anyone know of an implementation of Delaunay Triangulation in a #scheme?

https://en.wikipedia.org/wiki/Delaunay_triangulation

I've seen a couple in Common Lisp that I could *probably* try to port over.

#polygons #triangles

This #openaccess article published in #Nature provides an updated #database on global #mining #land use.

Looking closely at selected #polygons
it is interesting to see what is included and what is excluded.

https://www.nature.com/articles/s41597-022-01547-4

Related to the rotating 2n-fold polygons to get rhombus rosettes-thing, here is a picture involving rotating partial rings of polygons to get…well…something.

It is from about 3 years ago. #rhombusRosette #polygons

#FieldworkFriday

Some impressions from my first trip to #Alaska in 2015.
😀 🤩

Wildfires and thick smoke in the interior along the Dalton Highway.
#Thermokarst #lake dynamics (expansion + drainage) and #polygons on the North Slope.

*Pulls up in a sports car made of #n64 vector #polygons*

"Get in. We're going hacking."

#CyberPunk #BandCamp

https://rabbitjunk.com/track/nostromo

#pixelart to #polygons I love trying to get the 3d to overlay well with the reference art .. #zbrush #keyshot #3dart #blenderart

2022 #30DayMapChallenge
Day 3: Polygons

Polygon (legend patches)
The ability to use custom shapes for legends has been available since QGIS 3.14 Pi. This is a simple way to transform your map from something that looks generic into one that is unique (and sometimes more informative).

1/2

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#qgis #gis #gischat #polygons #foss4g #philippines #legendpatches #makebettermaps #cartography #maps #spatial

Made with QGIS
Admin boundary data from GADM

#30DayMapChallenge | Day 3 | #Polygons
#PowerBI #MapBox

This looks like a point map, but zoom in (way, way in) and you'll see it's actually an super-detailed polygon map.

The topic is deforestation in Brazil, over 2019-2020. A large spatial dataset was available (~50,000 shapes per year), which I integrated into a Power BI dataviz. The "hero" visualisation uses Mapbox's choropleth feature.

The whole dataviz is interactive - filtering or selecting part of any visual cross-filters the others, including re-drawing the map. This is where Power BI + MapBox are so impressive together.

I went with a satellite background layer, to highlight the natural features being impacted. Red was the obvious colour for the fire shapes, which I used for each shape's outline. As you zoom in, you can see the shape fill represents the class of deforestation.

This project was quite technically challenging, but I was quite happy with the end result, and it was of some use to at least one NGO working on this topic.

Interactive dataviz, source code, acknowledgements etc:
https://github.com/Mike-Honey/Brazil-Deforestation-DETER#readme

#30DayMapChallenge day 3 - #polygons

Finally caught up to the current day!! 🥳

I couldn't decide between these two versions - the data is identical but the layer order, layer alphas and base map colour are a bit different.

The #maps depict the average wind speed at 10m in 12km sections accross the UK, with data from the met office.

Full details can be found on my github:
https://github.com/VikkiWalls/30-Day-Map-Challenge-2022

An ultra quick one for #30DayMapChallenge - and I can't really claim much credit for this one, I made it in #QGIS using QGreenland as a #15minutemap : #Polygons of #Arctic #SeaIce around #Greenland in March 2016 - here picking out the #NorthWaterPolynya

This is a pattern with 5-fold #symmetry made of 20-gons that I made a couple of years ago. If you aren’t too distracted by the motion, you might be able to see suggestions of lines approximating a 5-fold #rhombus rosette...and possibly a few others..that may disappear when you look directly at them😁#mathart #polygons

This is something that I tweeted a couple of years ago.

It is a pattern based on regular 28-gons which is extendable to form a translationally #symmetric #tiling of the plane. It contains some rings of 7 #polygons, some of 4, as well as other groupings.

My eyes perceive a bit of an illusory twist.

There may also be dots appearing and disappearing.

#opticalillusion #mathart #mathsart

I think that I’ll post this here for those who haven’t seen it.

It involves one of a “class” of patterns made of #dodecagons which can be pretty much split into a snub square tiling and its dual cairo-type tiling

#CairoTilings #snubSquareTilings #mathart #mathsart #polygons

Some more #chainMaille stuff from a pattern of #polygons. It is an extension of the pattern shown in the next picture, but I had to start again from the beginning because I could no longer get the small split rings that I had initially used as connectors.

The picture showing the polygon pattern with corresponding chain maille is from my 2020 #BridgesMathArt paper (https://t.co/Km8a2FBIYC).

#mathart #mathsart

Some #beadCrochet based on #polygonSquiggles

Before and after.

#mathart #mathsart #crochet #beading #polygons

Here is the piece of #beadCrochet from 2 posts back shown with copies of its polygon pattern. I had a similar (but lighter) picture in the art exhibition at JMM 2021.

#mathart #mathsart #beading #crochet #polygons

A few posts back in this thread, I mentioned a short paper that I had written about my #beadCrochet escapades.

Here is a link to the very short video that I had done to elaborate on the stuff described in that paper.

https://vimeo.com/581733478

#mathart #mathsart #beading #crochet #polygons