DITHERING
#rheinmain #hessen #Germany #deutschland #fascade #fassade #pattern #raster #wald #forest #dither #dithering #pattern #pointillism #pointilismus #punkt #punkte #points #blackandwhite #schwarzweiss #blackwhite #art #artwork #kunst #arte #photo #foto #photography #fotografie #patternphotography #fotografia #raumstadtion
New Year's Redactions
My earlier text redaction demos were done in my OpenGL setup, using a pixelation effect overlaid on a text document. This was rather simple, but it required some manual tweaking to align the pixelation grid with the text. I've now redone the effect in text mode using Python, and besides unifying the text and "graphics" more cleanly, it makes certain extra features easier, such as this incremental redaction. Of course, video sources as used in the previous post also work.
A particular feature of the unified text + graphics process is that redactions won't exceed the length of each line. In the OpenGL version, the draw area had to be limited to the text rectangle manually, but now it works as it should have done all along.
#2026 #trumpmemes #epsteinmemes #jeffreyepstein #epsteinfiles #halftoneart #raster #pixelart #textmode #textmodeart #oldskool #xterm #pythoncode #algorithmicart #algorist
What shall we find in the Epstein files?
What shall we find in the Epstein files?
What shall we find in the Epstein files
early in the morning?
Model: @noira_musti
#trumpmemes #epsteinmemes #jeffreyepstein #epsteinfiles #halftoneart #raster #pixelart #realtime #opengl #pythoncode #algorithmicart #algorist
Trump found in the Epstein files! A little Xmas fun with image quantization.
#donaldtrump #trumpmemes #jeffreyepstein #epsteinfiles #halftoneart #raster #pixelart #algorithmicart #algorist
Sentinel-2 Based Estimates Of Rangeland Fractional Cover And Canopy Gap Class For The Western United States
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https://doi.org/10.1038/s41597-025-06160-9 <-- shared paper
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https://rangelands.app/products/rap10m/ <-- shared 10 metre Range Analysis platform overview
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[aside & totally anecdotal - I have ridden on the road in that last picture - near Sheridan, WY]
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#GIS #spatial #mapping #fedscience #fedservice #feddata #opendata #usecase #publicgood #rangeland #ecosystems #monitoring #spatialanalysis #spatiotemporal #US #USA #vegetation #satellite #remotesensing #earthobservation #Sentenial #Sentenial2 #canopy #fractionalcover #canopygap #landcover #landuse #grass #pinyon #juniper #opendata #raster #USWest #WesternStates #landsurface #tools #fielddata #model #modeling #BLM #USDA #statistics #geostatistics #RangelandAnalysisPlatform
@USDA @BLM
For the twenty ninth #30MapsInAMonth are two visualisations based on the @WorldPopProject 2030 projected population as 100m² raster data. The first shows the population of the Islands of Northern Europe and the second population change.
1/n
#Raster #Population #Beethoven #GBR #IRE #OpenData #30dayMapChallenge
🏝️ Et si les îles étaient des lacs ?
🙃 Cette carte revisite le relief de l’île de la Réunion en l’inversant, pour imaginer un monde à l'envers...
#30daymapchallenge – J29 #Raster
✍️ Clément Tychyj
📊 IGN BD ALTI® SHOM 2016, MNT Bathymétrique de façade (Projet Homonim)
Découvrez les cartes de nos agents : https://www.ign.fr/mag/30DayMapChallenge-30-jours-30-cartes-pour-celebrer-la-creativite-cartographique?fbclid=IwY2xjawN6sXRleHRuA2FlbQIxMABicmlkETF4YllVUW5HbUlzbGplOW9Bc3J0YwZhcHBfaWQQMjIyMDM5MTc4ODIwMDg5MgABHiO_PBSRhN03gVAFSu1tqEF7knuY8SwTtF2cdbBQPKSmY4pywUg-J4jAL-a0_aem_kuSqnW_1bD-H5pKS7XyTYg
Looking for a raster-first tool/workflow (ideally in #QGIS/ #GRASS) to site textile recycling containers as a coverage problem:
• 100×100 m population raster
• Candidate sites: cells with pop ≥200
• Coverage range: 400 m (Euclidean)
• Target: 80% population covered (min # of sites or max coverage)
#gis #gischat #osm #openstreetmap #opensource #geospatial #raster
Happy to report, that my latest #mastering for raster.media is out on 5 CDs now. European Open Call, various great artists: https://raster-raster.bandcamp.com/merch
#raster #experimental #electronica #electroacoustic
If you want to purchase a https://www.foss4gna.org/ workshop do it soon. We've already got workshops that are full. We have a great lineup #OpenStreetMap #GRASS #PostGIS #QGIS #DataScience #GeoAI #Raster https://www.foss4gna.org/schedule
A Gentle Introduction to GDAL, Part 1 [of 6]
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https://medium.com/planet-stories/a-gentle-introduction-to-gdal-part-1-a3253eb96082 <-- shared technical resource
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https://www.osgeo.org/projects/gdal/ <-- #GDAL page at @OSGEO
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[a little older tutorial - but digging in in my free time]
#GIS #spatial #mapping #GDAL #tutorial #workedexamples #opensource #alternative #translatorlibrary #vector #raster #usecase #OSGEO #datamodel #onlinelearning
@osgeo
𝗥𝗮𝘀𝘁𝗲𝗿 𝘁𝗲𝗴𝗲𝗻 𝘄𝗼𝗹𝘃𝗲𝗻? 𝗗𝗲𝘇𝗲 𝘀𝗽𝗿𝗶𝗻𝗴𝘁 𝗲𝗿 𝗴𝗲𝘄𝗼𝗼𝗻 𝗼𝘃𝗲𝗿𝗵𝗲𝗲𝗻
Een wolf in Gelderland heeft zichzelf geleerd over een goedgeplaatst wolfwerend raster te springen. Vorige maand heeft het dier zo mogelijk zes schapen gedood. De provincie Gelderland is op de hoogte van het kunstje en broedt op maatregelen.
https://www.rtl.nl/nieuws/binnenland/artikel/5525307/wolf-gelderland-wolfwerend-raster-schapen
Take a break and dive into the basics of map algebra with GRASS! 🌱
#grass #geospatial #tutorial #modelling #foss #osgeo #raster #processing
https://grass-tutorials.osgeo.org/content/tutorials/map_algebra/basic_map_algebra.html
MVT, MBT, PMTiles: Everything to know about vector tiles: Daniel-J-H offers a comprehensive overview of #vectortiles technology, including #Mapbox Vector Tiles (#MVT), #MBTiles, and #Protomaps’s #PMTiles. The post explains the evolution from #raster to #vector #maps, compares key formats and technologies,...
https://spatialists.ch/posts/2025/05/19-mvt-mbt-pmtiles-everything-to-know-about-vector-tiles/ #GIS #GISchat #geospatial #SwissGIS
Thinking of proposing a workshop at FOSS4G UK 2025 (Oct, Leeds, UK) on on-the-fly tile generation for webmaps.
Could cover MVT generation using PostGIS and pg_tileserv, raster tile generation using Titiler etc, or both (in a longer workshop). I'm not sure how much I can fit into one workshop...
Any thoughts as to which you'd prefer? Or particular things I should cover?
Have an excellent long weekend everyone (if you are in the US), we all deserve it!
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H/T Simon Ilyushchenko for the brilliant image!
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#GIS #spatial #mapping #raster #mapnerds #mapgeeks #fridayfeeling #fridayfun #raster #projection #connected #gettingyourbearings #coordinates
MVT, MBT, PMTiles: Everything to know about vector tiles: @djh offers a comprehensive overview of #vectortiles technology, including #Mapbox Vector Tiles (#MVT), #MBTiles, and #Protomaps’s #PMTiles. The post explains the evolution from #raster to #vector #maps, compares key formats and technologies,...
https://spatialists.ch/posts/2025/05-19-mvt-mbt-pmtiles-everything-to-know-about-vector-tiles/ #GIS #GISchat #geospatial #SwissGIS
In the last post, Tis Veugen suggested dithering with the Gosper curve. At first I thought this doesn't make sense, since the curve lives on a hexagonal lattice, while dithering is generally done at the native pixel level, which means a square lattice. But as I thought about this further, it started to look like a fun challenge. Besides, the square grid hasn't always been the native way to organize pixels; for example, some old CRTs also used a hex lattice.
So I was really just making up excuses for the extra work. First I had to set up interpolated sampling, which would come for free in OpenGL, but now I was working on the CPU. The Gosper curve was also new to me, and I implemented it in my own way from first principles using IFS ideas, like I'd done earlier with the Peano curve.
For comparison, here's also a version with the boustrophedon curve on a hexagon, since I already had that curve function in my toolbox. Finally there's also the raw Gosper curve, though a smaller version to give a clearer idea.
#dithering #halftoneart #raster #pixelart #gospercurve #planefillingcurve #spacefillingcurve #pythoncode #opengl #algorithmicart #algorist #mathart #laskutaide #ittaide #kuavataide #iterati
