kylebarron

13 ms·

61.
GeoParquet on the Web(observablehq.com)
1 points by kylebarron 4y ago|0 comments
62.
by kylebarron 5y ago
Looks to be a great resource. I've been working on a WASM implementation of reading and writing Apache Parquet [0] and it's been difficult being new to WASM to find the best way of distributing the WASM that works on Node and thro
63.
by kylebarron 5y ago
This was the idea of Pixel8.earth [0] -- to combine data from many iPhones with lidar to accurately create a 3d map. The company was bought by Snap last year [1]. [0]: https://pixel8earth.medium.com/ [1]: https:/&#x2F
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by kylebarron 5y ago
luma.gl is also working on a new version to support WebGPU: https://luma.gl/docs/v9-api
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by kylebarron 5y ago
GeoTIFF does have internal compression support. In fact you can compress your GeoTIFF internally using WebP [0]. [0]: https://gdal.org/drivers/raster/cog.html#general-creation-op...
66.
Lleaves – Compiling decision trees for fast prediction using LLVM(siboehm.com)
4 points by kylebarron 5y ago|0 comments
67.
Judge in Apple / Epic issues permanent injunction against Apple(twitter.com)
3 points by kylebarron 5y ago|1 comments
68.
by kylebarron 5y ago
With something like a Garmin inReach, the service is turned completely off if you're not subscribed, so even an SOS message wouldn't be transmitted through the satellite
69.
Consortium for Python Data API Standards(data-apis.org)
2 points by kylebarron 5y ago|0 comments
70.
GDAL Joins NumFOCUS Sponsored Projects(numfocus.medium.com)
1 points by kylebarron 5y ago|0 comments
71.
Startups Aim Beyond Earth(nytimes.com)
4 points by kylebarron 5y ago|1 comments
72.
Anaconda Collaborates with Intel to Improve Speed and Scale for ML Workflows(anaconda.com)
3 points by kylebarron 5y ago|0 comments
73.
by kylebarron 5y ago
> Either way, the recommended way of connecting deck.gl with Mapbox is through React Map GL. I should note this is only the recommended way when you're using React
74.
by kylebarron 5y ago
Yes. deck.gl has two ways of interfacing with Mapbox GL, either where deck.gl is a layer on top of Mapbox GL (with a separate WebGL context) or by sharing the same WebGL context. Sharing the same WebGL context allows e.g. Mapbox's 3D b
75.
by kylebarron 5y ago
It would take someone designing the same style in the vector format. This [0] is the closest I've seen to a vector port of the default OSM style. Demo [1] [0]: https://github.com/baremaps/openstreetmap-vecto [1]:
76.
by kylebarron 5y ago
Probably supported only in WebGL2
77.
Unfolded and Foursquare Join Forces to Build Future of Geospatial Analytics(unfolded.ai)
9 points by kylebarron 5y ago|1 comments
78.
by kylebarron 5y ago
Once you pass a certain zoom (looks like zoom 11.5 here) the imagery is no longer recent. You can see the copyright statement change to "Microsoft", where it presumably just loads data from Bing maps. At lower zooms, where the cop
79.
by kylebarron 5y ago
The two Sentinel-2 satellites together cover all land area of the Earth every 5 days, but are only 10-meter pixel resolution. > 10 days at the equator with one satellite, and 5 days with 2 satellites under cloud-free conditions which res
80.
by kylebarron 5y ago
Oh hi Sergio! Hope you're doing well. I'm not in the economics field anymore, but it would be cool to see if an economist could use this data. It's probably a little harder to use because you'd have to apply some vectori
81.
by kylebarron 5y ago
S3 isn't a server, it's an object store. This uses Lambda (the serverless part) to fetch source data on demand, combine, reproject to web mercator, and send to the client. There are varied definitions of serverless; it isn't
82.
by kylebarron 5y ago
The S3 bucket is hosted/managed by the U.S. Geological Survey. The only costs borne by them are the hosting, S3 requests, and S3 egress. In this case there's no egress since I fetch from the same region, so the marginal cost of th
83.
by kylebarron 5y ago
Yeah pretty much. The backend needs to 1) find the S3 urls of the relevant images that intersect that XYZ tile index 2) read the relevant portion of each of them (removing the map collar as necessary [0]), and 3) composite them together to
84.
by kylebarron 5y ago
I personally really love looking at old maps of cities like LA [0] to see to what extent the urban structure has changed in the last ~100 years. [0]: https://kylebarron.dev/usgs-topo-mosaic/#13.02/34.03937/-11
85.
by kylebarron 5y ago
Hi all, I was invited to repost this (originally posted last year) to be included in the second chance pool! The USGS created topographic maps by hand from 1884 to 2006 (when they started making their topographic map series digitally). I st
86.
Show HN: Serverless USGS historical topographic map tiles(kylebarron.dev)
134 points by kylebarron 5y ago|21 comments
87.
by kylebarron 5y ago
See also: https://github.com/pangeo-data/cog-best-practices/issues/9
88.
by kylebarron 5y ago
Thanks! The text is still relevant but those demos are a little old. If you're curious these demos are from last week (using Cloud-Optimized GeoTIFFs under the hood to serve image data quickly): - https://studio.unfolded.ai&
89.
by kylebarron 5y ago
You could, you'd just have to be wary of how large the header metadata would be. If you had a single Cloud-Optimized GeoTIFF of the world with internal tiles up to zoom 14, the header metadata could be a few MB, which wouldn't be
90.
by kylebarron 5y ago
This is a good hex editor overview, but also the part about Cloud-Optimized GeoTIFFs is quite good. In the past couple of years COGs have really revolutionized the satellite imagery industry. Even USGS has seen this is the future and publis

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