#polygons — Public Fediverse posts

POLY Aerodrome: Tropical Island Airfield #Tropicalisland #Airfield #Military #Transport #People #Earth #Plants #Props #Polygons #Materials #Images #AssetStore

https://u3dn.com/packages/poly-aerodrome-tropical-island-airfield-207115

#Polyhedron #Polygons #tiles #opticalillusion #MathArt #MathsArt

The video in this post by @graveolensa

https://mathstodon.xyz/@graveolensa/115885487505867437

about people with 4 color cones having a sphere's worth of hues is fascinating but, being a trichromat, i don't fully understand it or know if its correct. Here is a mathematically simple but scientifically crude analogy between trichromaticity and tetrachromaticity.

A note on the figures, although this is about color vision and the figures have been colored the colors in the figures are just rough guides for trichromats, which most people are. This analogy is too crude for the colors to precisely match a trichromat's color experiences.

The visible spectrum is rounded off to the interval [415 THz, 715 THz]. The cone cells' activation, as a function of the frequency of monochromatic light they receive, are idealized to the piecewise linear spectral sensitivity curves shown in the figure. They are surjective to \([0,1]\) so as to implement Ooqui's "rule of hue". Call them \(r(\nu)\) (red cone), \(g(\nu)\) (green cone), and \(b(\nu)\) (violet cone).

Each cone type has exactly 1 frequency of monochromatic light where it is the only type of cone that is activated and that cone's activation is 1 at that frequency. These frequencies are 415, 565, and 715. At every other frequency in the visible spectrum exactly 2 cone types are activated by monochromatic light and the activation of at least one of them is 1.

(1/6)

#Polyhedron #Polygons #tiles #opticalillusion #MathArt #MathsArt

The video in this post by @graveolensa

https://mathstodon.xyz/@graveolensa/115885487505867437

about people with 4 color cones having a sphere's worth of hues is fascinating but, being a trichromat, i don't fully understand it or know if its correct. Here is a mathematically simple but scientifically crude analogy between trichromaticity and tetrachromaticity.

A note on the figures, although this is about color vision and the figures have been colored the colors in the figures are just rough guides for trichromats, which most people are. This analogy is too crude for the colors to precisely match a trichromat's color experiences.

The visible spectrum is rounded off to the interval [415 THz, 715 THz]. The cone cells' activation, as a function of the frequency of monochromatic light they receive, are idealized to the piecewise linear spectral sensitivity curves shown in the figure. They are surjective to \([0,1]\) so as to implement Ooqui's "rule of hue". Call them \(r(\nu)\) (red cone), \(g(\nu)\) (green cone), and \(b(\nu)\) (violet cone).

Each cone type has exactly 1 frequency of monochromatic light where it is the only type of cone that is activated and that cone's activation is 1 at that frequency. These frequencies are 415, 565, and 715. At every other frequency in the visible spectrum exactly 2 cone types are activated by monochromatic light and the activation of at least one of them is 1.

(1/6)

#Polyhedron #Polygons #tiles #opticalillusion #MathArt #MathsArt

The video in this post by @graveolensa

https://mathstodon.xyz/@graveolensa/115885487505867437

about people with 4 color cones having a sphere's worth of hues is fascinating but, being a trichromat, i don't fully understand it or know if its correct. Here is a mathematically simple but scientifically crude analogy between trichromaticity and tetrachromaticity.

A note on the figures, although this is about color vision and the figures have been colored the colors in the figures are just rough guides for trichromats, which most people are. This analogy is too crude for the colors to precisely match a trichromat's color experiences.

The visible spectrum is rounded off to the interval [415 THz, 715 THz]. The cone cells' activation, as a function of the frequency of monochromatic light they receive, are idealized to the piecewise linear spectral sensitivity curves shown in the figure. They are surjective to \([0,1]\) so as to implement Ooqui's "rule of hue". Call them \(r(\nu)\) (red cone), \(g(\nu)\) (green cone), and \(b(\nu)\) (violet cone).

Each cone type has exactly 1 frequency of monochromatic light where it is the only type of cone that is activated and that cone's activation is 1 at that frequency. These frequencies are 415, 565, and 715. At every other frequency in the visible spectrum exactly 2 cone types are activated by monochromatic light and the activation of at least one of them is 1.

(1/6)

#Polyhedron #Polygons #tiles #opticalillusion #MathArt #MathsArt

The video in this post by @graveolensa

https://mathstodon.xyz/@graveolensa/115885487505867437

about people with 4 color cones having a sphere's worth of hues is fascinating but, being a trichromat, i don't fully understand it or know if its correct. Here is a mathematically simple but scientifically crude analogy between trichromaticity and tetrachromaticity.

A note on the figures, although this is about color vision and the figures have been colored the colors in the figures are just rough guides for trichromats, which most people are. This analogy is too crude for the colors to precisely match a trichromat's color experiences.

The visible spectrum is rounded off to the interval [415 THz, 715 THz]. The cone cells' activation, as a function of the frequency of monochromatic light they receive, are idealized to the piecewise linear spectral sensitivity curves shown in the figure. They are surjective to \([0,1]\) so as to implement Ooqui's "rule of hue". Call them \(r(\nu)\) (red cone), \(g(\nu)\) (green cone), and \(b(\nu)\) (violet cone).

Each cone type has exactly 1 frequency of monochromatic light where it is the only type of cone that is activated and that cone's activation is 1 at that frequency. These frequencies are 415, 565, and 715. At every other frequency in the visible spectrum exactly 2 cone types are activated by monochromatic light and the activation of at least one of them is 1.

(1/6)

#Polyhedron #Polygons #tiles #opticalillusion #MathArt #MathsArt

The video in this post by @graveolensa

https://mathstodon.xyz/@graveolensa/115885487505867437

about people with 4 color cones having a sphere's worth of hues is fascinating but, being a trichromat, i don't fully understand it or know if its correct. Here is a mathematically simple but scientifically crude analogy between trichromaticity and tetrachromaticity.

A note on the figures, although this is about color vision and the figures have been colored the colors in the figures are just rough guides for trichromats, which most people are. This analogy is too crude for the colors to precisely match a trichromat's color experiences.

The visible spectrum is rounded off to the interval [415 THz, 715 THz]. The cone cells' activation, as a function of the frequency of monochromatic light they receive, are idealized to the piecewise linear spectral sensitivity curves shown in the figure. They are surjective to \([0,1]\) so as to implement Ooqui's "rule of hue". Call them \(r(\nu)\) (red cone), \(g(\nu)\) (green cone), and \(b(\nu)\) (violet cone).

Each cone type has exactly 1 frequency of monochromatic light where it is the only type of cone that is activated and that cone's activation is 1 at that frequency. These frequencies are 415, 565, and 715. At every other frequency in the visible spectrum exactly 2 cone types are activated by monochromatic light and the activation of at least one of them is 1.

(1/6)

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/b81cc85d-9c7c-4b66-afae-cf2abb5cf610

#diagrams #triangles #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/b81cc85d-9c7c-4b66-afae-cf2abb5cf610

#diagrams #triangles #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/b81cc85d-9c7c-4b66-afae-cf2abb5cf610

#diagrams #triangles #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/b81cc85d-9c7c-4b66-afae-cf2abb5cf610

#diagrams #triangles #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/b81cc85d-9c7c-4b66-afae-cf2abb5cf610

#diagrams #triangles #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/14213a6a-ef4e-474c-ad4b-281f61c28f60

#diagrams #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/14213a6a-ef4e-474c-ad4b-281f61c28f60

#diagrams #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/14213a6a-ef4e-474c-ad4b-281f61c28f60

#diagrams #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/14213a6a-ef4e-474c-ad4b-281f61c28f60

#diagrams #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/14213a6a-ef4e-474c-ad4b-281f61c28f60

#diagrams #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Some historical documents from 2009 for #TextureTuesday... A high-res render and some detail crops of the award-winning generative typography & branding system/application I designed & developed for the DECODE exhibition at Victoria & Albert Museum London (one of the largest group shows the V&A had organized and curated in a few decades, and which later traveled to other museums worldwide)...

The entire identity system & application was/is open source (a world's first back then) and was created with my toxiclibs toolkit (3D geometry, meshing, voxel-based volumetric modeling, animation) and Processing (GUI). Rendering using Christopher Kulla's Sunflow.

More project information:
https://web.archive.org/web/20100303093556/http://code.google.com/p/decode/

User guide (also explaining the structure of the 3D object):
https://web.archive.org/web/20100213014335/http://code.google.com/p/decode/wiki/UserGuide

Mirror of the old repo:
https://github.com/postspectacular/vam-decode/

Flickr set (120+ images):
https://www.flickr.com/photos/toxi/albums/72157622483026212/

#AbstractArt #GenerativeArt #Typography #Branding #Texture #VictoriaAlbertMuseum #OpenSource #Polygons #Color #Voxel

Polly Gone

I’ve dropped all my jokes about polygons … too edgy.

🎮 Oh wow, someone made a whole open-world engine for the N64—because the world *definitely* needed more ways to render blocky polygons! 🕹️👏 Kudos on spending countless hours resurrecting a console that couldn't even handle more than 20 FPS in 2023. 🤦‍♂️
https://www.youtube.com/watch?v=lXxmIw9axWw #openworld #N64 #gamedevelopment #retro #gamingblocky #polygons #gamingnews #HackerNews #ngated

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/900c6d5b-125b-4c13-9b09-996990e19cfa

#diagrams #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/900c6d5b-125b-4c13-9b09-996990e19cfa

#diagrams #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/900c6d5b-125b-4c13-9b09-996990e19cfa

#diagrams #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/900c6d5b-125b-4c13-9b09-996990e19cfa

#diagrams #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/900c6d5b-125b-4c13-9b09-996990e19cfa

#diagrams #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

HydroLAKES | Global Lake Polygons for Advanced Hydrological GIS
--
https://www.hydrosheds.org/products/hydrolakes <-- shared project / data page
--
https://doi.org/10.1038/s41597-022-01425-z <-- shared (2022) overview paper
--
https://doi.org/10.1002/gdj3.285 <-- shared (2024) related paper
--
https://doi.org/10.1126/science.abo2812 <-- shared (2023) global lake water storage consideration paper
--
#HydroLAKES #opendata #GIS #spatial #hydrospatial #mapping #global #water #hydrology #HydroATLAS #HydroSHEDS #lake #polygons #waterbodies #pourpoints #HydroRIVERS #riverreach #network #HydroBASINS #flownetwork #hydroenvironmental #vector #dataset #downloadable #topology #depth #volume #attributes #shoreline #spatialanalysis #model #modeling #workflows
@McGill University

HydroLAKES | Global Lake Polygons for Advanced Hydrological GIS
--
https://www.hydrosheds.org/products/hydrolakes <-- shared project / data page
--
https://doi.org/10.1038/s41597-022-01425-z <-- shared (2022) overview paper
--
https://doi.org/10.1002/gdj3.285 <-- shared (2024) related paper
--
https://doi.org/10.1126/science.abo2812 <-- shared (2023) global lake water storage consideration paper
--
#HydroLAKES #opendata #GIS #spatial #hydrospatial #mapping #global #water #hydrology #HydroATLAS #HydroSHEDS #lake #polygons #waterbodies #pourpoints #HydroRIVERS #riverreach #network #HydroBASINS #flownetwork #hydroenvironmental #vector #dataset #downloadable #topology #depth #volume #attributes #shoreline #spatialanalysis #model #modeling #workflows
@McGill University

HydroLAKES | Global Lake Polygons for Advanced Hydrological GIS
--
https://www.hydrosheds.org/products/hydrolakes <-- shared project / data page
--
https://doi.org/10.1038/s41597-022-01425-z <-- shared (2022) overview paper
--
https://doi.org/10.1002/gdj3.285 <-- shared (2024) related paper
--
https://doi.org/10.1126/science.abo2812 <-- shared (2023) global lake water storage consideration paper
--
#HydroLAKES #opendata #GIS #spatial #hydrospatial #mapping #global #water #hydrology #HydroATLAS #HydroSHEDS #lake #polygons #waterbodies #pourpoints #HydroRIVERS #riverreach #network #HydroBASINS #flownetwork #hydroenvironmental #vector #dataset #downloadable #topology #depth #volume #attributes #shoreline #spatialanalysis #model #modeling #workflows
@McGill University

HydroLAKES | Global Lake Polygons for Advanced Hydrological GIS
--
https://www.hydrosheds.org/products/hydrolakes <-- shared project / data page
--
https://doi.org/10.1038/s41597-022-01425-z <-- shared (2022) overview paper
--
https://doi.org/10.1002/gdj3.285 <-- shared (2024) related paper
--
https://doi.org/10.1126/science.abo2812 <-- shared (2023) global lake water storage consideration paper
--
#HydroLAKES #opendata #GIS #spatial #hydrospatial #mapping #global #water #hydrology #HydroATLAS #HydroSHEDS #lake #polygons #waterbodies #pourpoints #HydroRIVERS #riverreach #network #HydroBASINS #flownetwork #hydroenvironmental #vector #dataset #downloadable #topology #depth #volume #attributes #shoreline #spatialanalysis #model #modeling #workflows
@McGill University

HydroLAKES | Global Lake Polygons for Advanced Hydrological GIS
--
https://www.hydrosheds.org/products/hydrolakes <-- shared project / data page
--
https://doi.org/10.1038/s41597-022-01425-z <-- shared (2022) overview paper
--
https://doi.org/10.1002/gdj3.285 <-- shared (2024) related paper
--
https://doi.org/10.1126/science.abo2812 <-- shared (2023) global lake water storage consideration paper
--
#HydroLAKES #opendata #GIS #spatial #hydrospatial #mapping #global #water #hydrology #HydroATLAS #HydroSHEDS #lake #polygons #waterbodies #pourpoints #HydroRIVERS #riverreach #network #HydroBASINS #flownetwork #hydroenvironmental #vector #dataset #downloadable #topology #depth #volume #attributes #shoreline #spatialanalysis #model #modeling #workflows
@McGill University

#Maths #Polygons #Area

Just had this stupid thought, can anyone answer this? This is probably something well known? Like, totally obvious?

Suppose you have an equilateral triangle, with each side of length one. You take the area -- call it A(3) -- and divide it by three. You do the same with a 1x 1square -- A(4)/4 -- and then with a pentagon, etc.

What would this be for a circle? If you look at the series A(n)/n, with n→infinity, does that converge?

We have A(3)/3 = 0.144.., A(4)/4 = 0.25, A(5)/5 = 0.344. ...

😬

"Attorneys representing the family of Stacey Darden, an Altadena resident who perished in the Eaton fire, filed a wrongful death lawsuit Monday alleging that the software that Los Angeles County uses for emergency alerts was defective and failed to alert her to leave in time.

The complaint, filed more than 10 months after the Eaton fire engulfed Altadena, targets the emergency alert software company Genasys and blames the company's predesigned evacuation zones, or "polygons," for keeping residents east of Lake Avenue from getting timely evacuation orders the night of the fire"

https://www.aol.com/news/she-died-eaton-fire-her-233617578.html

#gis #polygons #evacuations

🏝️ Chaque île est unique.

Mais comment les représenter à l'échelle d'un globe ? C'est une question de taille... et de généralisation cartographique.

🔍 A l'échelle mondiale, représenter chaque crique devient impossible : les lignes côtières se simplifient, les détails s'effacent.

👀 Ces cartes révèlent la métamorphose de la géométrie selon l'échelle.

#30DayMapChallenge – J3 #POLYGONS
✍️ Clément Tychyj
📊 Admin Express IGN

Toutes les créations de nos agents : https://www.ign.fr/mag/30DayMapChallenge-30-jours-30-cartes-pour-celebrer-la-creativite-cartographique

For the third #30MapsInAMonth are three theoretical European full-automated luxury high-speed heavy-rail network maps based on population distribution. This uses H3 hierarchical hexagon library to aggregate @WorldPopProject population data into #polygons, creating a maximum spanning tree network using population-to-population edge-weights and names for major urban centres added using @EUCommission Global Human Settlement Layer data.

#rail #network #HighSpeedRail #stations #30DayMapChallenge

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/ead2521f-0034-4d50-90e6-45d52cbbe71e

#diagrams #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

Illustration by Augustin Hirschvogel, from Geometria (1543).

Source: SLUB

Available to buy as a print.

https://pdimagearchive.org/images/7440cc66-7307-4803-8532-0b5b34f05931

#diagrams #perspective #measurements #shapes #polygons #three-dimensional #geometry #art #publicdomain

#Graphics #Programming #CGI #Computer #3D #Modeling #polygons

Added a simple rule so shapes have children of the same type. A bit more orderly.

#CreativeCoding #OPENRNDR #Kotlin
#Geometry #polygons

I'm writing small programs for a presentation. Programs that are simple to write in one framework or language which would be not so simple to write in different ones.

I feel like printing, cutting and folding it to create a 3D shape, knowing that it would not produce a nice closed one 🙂

#CreativeCoding #OPENRNDR #Kotlin #Geometry #RegularPolygons #Polygons

Does anybody know the "Flatten" SAGA GIS tool? Any idea how to replicate it with Python/PostGIS? I've been trying but my knowledge of Shapely is just not enough. Basically, what it does is "flattening" a polygon layer, intersecting overlapping polygons.

#python #shapely #polygons

At work today:

"These three things don't match. Can you guys fix that, we want the official polygons"

"Uh, looks like those are all official, but don't match"

"WAIT, WE found another one we aren't using yet, so you will have FOUR sets of different polygons that are official!"

#gis #polygons

I’ve dropped all my jokes about #polygons ... too edgy.

#geometry

30 DAY MAP CHALLENGE 2024 | DAY 3 - POLYGONS

Shapes of (K)yøu(si)
of triangles, circles, and ovals

DATA
> Digitized from OpenStreetMap (copyright OSM contributors)

PROCESS
> Duplicate the digitized layer.
> Apply a hand-drawn smudgy-pen outline style and a pencil fill with categorized symbology.
> Styles are from the hand-drawn styles by Andy Woodruff (https://www.facebook.com/bnhr.xyz/posts/pfbid02BKbYMnv5quZcDjNoYiGnZPzc2MqWwU8YbuypFJMdYA242WibaNnsZLsYErvWQEfdl)

#30DayMapChallenge #30DayMapChallenge2024 #Day3 #Polygons #MadeWithQGIS #QGIS #QC #Kyusi #QuezonCity #Philippines

#30DayMapChallenge Day 3: Polygons

For a vineyard owner 🍇, choosing the best spot is the key to quality wine! With Kontur Atlas, we compared two areas to find the perfect one 🗺️
Curious? Let’s connect!

#30DaysMapChallenge #VineyardPlanning #SustainableAgriculture #KonturAtlas #Polygons

#30DayMapChallenge Day 3: Polygons

For a vineyard owner 🍇, choosing the best spot is the key to quality wine! With Kontur Atlas, we compared two areas to find the perfect one 🗺️
Curious? Let’s connect!

#30DaysMapChallenge #VineyardPlanning #SustainableAgriculture #KonturAtlas #Polygons

#30DayMapChallenge #polygons #Spain #DANA #humanmobility #movilidad up to 2% of typical daily mobility in Spain was affected by DANA as of 31 October, based on open mobility data for 2023 and road closures data. Via: #rstats #spanishoddata https://ropenspain.github.io/spanishoddata/

Day 3 of #30DayMapChallenge #polygons, which I used as a prompt to explore some of the free data available in Denmark, as well as the standard #QGIS plugins provided by #klimadatastyrelsen.
A map of eel grass habitat in #Copenhagen harbour in 2012. If you have access to more recent data, I'd love to have it!

Explanation: https://sternaparadisaea.net/30-day-map-challenge/

Day 3 of #30DayMapChallenge #polygons, which I used as a prompt to explore some of the free data available in Denmark, as well as the standard #QGIS plugins provided by #klimadatastyrelsen.
A map of eel grass habitat in #Copenhagen harbour in 2012. If you have access to more recent data, I'd love to have it!

Explanation: https://sternaparadisaea.net/30-day-map-challenge/

Day 3 of #30DayMapChallenge #polygons, which I used as a prompt to explore some of the free data available in Denmark, as well as the standard #QGIS plugins provided by #klimadatastyrelsen.
A map of eel grass habitat in #Copenhagen harbour in 2012. If you have access to more recent data, I'd love to have it!

Explanation: https://sternaparadisaea.net/30-day-map-challenge/

Day 3 of #30DayMapChallenge #polygons, which I used as a prompt to explore some of the free data available in Denmark, as well as the standard #QGIS plugins provided by #klimadatastyrelsen.
A map of eel grass habitat in #Copenhagen harbour in 2012. If you have access to more recent data, I'd love to have it!

Explanation: https://sternaparadisaea.net/30-day-map-challenge/

Day 3 of #30DayMapChallenge #polygons, which I used as a prompt to explore some of the free data available in Denmark, as well as the standard #QGIS plugins provided by #klimadatastyrelsen.
A map of eel grass habitat in #Copenhagen harbour in 2012. If you have access to more recent data, I'd love to have it!

Explanation: https://sternaparadisaea.net/30-day-map-challenge/