Contemplating FOSS4G 2015, Seoul, South Korea | SEPTEMBER 14TH – 19TH, 2015. It’s only 18 cents a mile to get there from Cleveland, but only 0.11 dollars a kilometer, because the metric system is more economical. If you need inspiration for your own travels to Korea, Mr. Sanghee Shin has that for you. He starts with technology, food, arts, culture, economic potential, but also solicits … Continue reading And I will fly ten thousand miles…
More landscape position pictures — just showing riparianess. See also https://smathermather.wordpress.com/2014/11/22/landscape-position-using-gdal/ and https://smathermather.wordpress.com/2014/11/24/landscape-position-using-gdal-pt-2/ Map tiles by Stamen Design, under CC BY 3.0. Data by OpenStreetMap, under ODbL Continue reading Landscape Position using GDAL — PT 3
Just pretty pics today of estimated riparianess. If you prefer a bit of code, see previous post https://smathermather.wordpress.com/2014/11/22/landscape-position-using-gdal/ Continue reading Landscape Position using GDAL — PT 2
Hat tip again to Seth Fitzsimmons. I’ve been looking for a good, easy to use smoothing algorithm for rasters. Preferably something so easy, I don’t even need to write a little python, and so efficient I can run it on 30GB+ datasets and have it complete before I get distracted again by the next shiny project (a few hours). Seth’s solution? Downsample to a low … Continue reading Landscape Position using GDAL
This is a quick blog post about technologies that I don’t know well… so please comment if you know better. GeoGig and dat are great tools for addressing versioning in data, so what’s the difference? GeoGig is built on Java and meant for any “simple features” geometry (points, lines, polygons). It’s strength is that it is built from the ground up to handle geometries well, … Continue reading Quick (and likely apocryphal) post on versioning and databases
The mark of a great conference is one that not only is well run and orchestrated, interesting from a content perspective, and full of bright minds, but also one that experiments with elements of interactions to maximize the value delivered to attendees. By these measures, the International Conference of Crisis Mappers (ICCM) succeeds. Normally, I struggle with the call to attend sessions vs. the conference … Continue reading ICCM — International Conference of Crisis Mappers
In previous maps we looked at Class B, C, and D airspace. Let’s add in Class E0 and E5… (not yet in 3D): (Map tiles by Stamen Design, under CC BY 3.0. Data by OpenStreetMap, under ODbL) Previous posts: https://smathermather.wordpress.com/2014/10/25/airspace-is-complicated-and-so-i-abuse-postgis-once-again/ and https://smathermather.wordpress.com/2014/10/25/airspace-is-complicated-and-so-i-abuse-postgis-once-again-reprise/ Continue reading Airspace — A deep rabbit hole
In the previous post: https://smathermather.wordpress.com/2014/10/25/airspace-is-complicated-and-so-i-abuse-postgis-once-again/ we explore the 3D shape and complexity of controlled airspace. Now here’s the rest of the code. We’ll add our affine transformation ala Seth Fitsimmons: And integrate that into our original function: And voila! Let’s take a look at Washington, DC and surrounds, another nice complicated example: And again with map tiles by Stamen Design, under CC BY 3.0. Data … Continue reading Airspace is complicated — and so I abuse PostGIS once again — Reprise…
Let’s ignore for a moment the drone hobbiest / enthusiast. What is the shape of airspace for airplanes and commercial and government unmanned aircraft flying under Certificates of Authorization, and how can we visualize it? Thanks to Anita in the last post, we have the Class B,C,D,E Airspace Shape Files which helps us define the overall shape of controlled airspace. But, these are 3D things. … Continue reading Airspace is complicated — and so I abuse PostGIS once again
Ok @Mapbox, I’ve given you enough grace. I pulled the grumpy-old-man thing with Kenneth Field from ESRI a couple of weeks ago, and ended up apologizing. If i only give ESRI a few hours of grace, 3 months of grace for you is more than fair. Now, to raise my foot up. We’ll see if it ends up in my mouth again. Ok, so Mapbox … Continue reading Someone is wrong on the internet…
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