51–60 of 102 posts
Earlier quoted context omitted.
I'm curious what sorts of data you are collecting and how it helps to have it in map form rather than some other file format.
Towns across the country that meet our criteria overlayed with climate change maps. The existing layers around satellite and topo views are also super helpful to get an idea of if the area has good tree cover and interesting landscapes.
Does anyone have a really good (maybe illustrated?) guide/short reference to the world of GIS? Every time I see GIS stuff mentioned the problem space itself, solution jargon, and various movements in the ecosystem (projects being unsupported, stewards/companies changing etc) always throws me for a loop. It's certainly the case that I just haven't built enough mapping-related software to be comfortable but if there's…
This is very nice! Happy to see a few of my libraries in the dependencies :) Also check out https://github.com/kothic/kothic-js , an older but similar attempt at making a full-fledged map renderer using 2D Canvas. It has a pretty good label rendering in particular which you might find useful.
Earlier quoted context omitted.
Originally, MBTiles was designed for mobile offline. Then, Mapbox started serving directly from the SQLite for web & other clients, creating the Node.js SQLite bindings in the process. Eventually, they had an unpacker for MBTiles uploads that would stick the tiles in CDN. So, really no more complex than old school static content hosting. Source: I created MBTiles ;-)
Author of OP here, I use the tile unpacker as well! I didn't point this out in the OP, but I found the ergonomics of uploading tiles to S3 etc get bad once you're over a couple tens of thousands of tiles, as each upload has some overhead. I've tested PMTiles on S3 successfully with hundreds of millions of tiles. Deduplication is also important to save space on redundant ocean/earth tiles; MBTiles can deduplicate via…
Does anyone have a really good (maybe illustrated?) guide/short reference to the world of GIS? Every time I see GIS stuff mentioned the problem space itself, solution jargon, and various movements in the ecosystem (projects being unsupported, stewards/companies changing etc) always throws me for a loop. It's certainly the case that I just haven't built enough mapping-related software to be comfortable but if there's…
http://leafletjs.com https://shapely.readthedocs.io/ https://github.com/libgeos/geos https://rasterio.readthedocs.io/ https://gdal.org http://www.angusj.com/delphi/clipper.php
Super excited for your project. I have been using map tiles from Mapbox, MapTiler, OSM Buildings for my project and am coming to the point that I need to merge elevation data with building height data in order to cast realistic shadows across the earth. Unfortunately elevation data and building data come from two different tile sets from two different tile providers and it's a lot of download/processing overhead to m…
What kind of project can this tool be used for?
Does anyone have a really good (maybe illustrated?) guide/short reference to the world of GIS? Every time I see GIS stuff mentioned the problem space itself, solution jargon, and various movements in the ecosystem (projects being unsupported, stewards/companies changing etc) always throws me for a loop. It's certainly the case that I just haven't built enough mapping-related software to be comfortable but if there's…
Author of the OP here. I don't have a GIS background in particular; I do have a decade of experience building web mapping applications, and here's some of the foundational software I use: http://leafletjs.com https://shapely.readthedocs.io/ https://github.com/libgeos/geos https://rasterio.readthedocs.io/ https://gdal.org http://www.angusj.com/delphi/clipper.php
One of the nice out-of-the-box systems I've come across is Pelias[0], what are your opinions on it? It bundles and provides the API so it's one of the things I've thought to self-host if I'm going to. It looks like it doesn't do tiles so I'd need to find something for that?
From deep in my bookmarks I also have:
- https://github.com/tidwall/tile38 (in-memory search+geofencing+other)
- https://openlayers.org/ (visualization, alternative to leaflet?)
- https://download.geofabrik.de/ (where to actually download the OSM data, to hand it to something like PostGIS)
- https://github.com/maptiler/tileserver-gl (A tile server... which presumably needs OSM data & takes coordinates with bounding box parameters?)
> I do have a decade of experience building web mapping applications > I don't have a GIS background in particular;
It's only on HN that you get statements like this, haha, what do you think 10 years of experience building mapping applications is? I building mapping applications is generally what people consider "GIS background" -- if you did GIS but never produced any maps... would the trees make a sound?
[0]: https://pelias.io/
Does anyone have a really good (maybe illustrated?) guide/short reference to the world of GIS? Every time I see GIS stuff mentioned the problem space itself, solution jargon, and various movements in the ecosystem (projects being unsupported, stewards/companies changing etc) always throws me for a loop. It's certainly the case that I just haven't built enough mapping-related software to be comfortable but if there's…
I didn't know any GIS when I started OpenStreetMap and I think it was for the better. A fresh approach often yields a lot of progress.
> Created by Steve Coast in the UK in 2004[0]
Thanks for starting this way back then, the amount of value created directly and indirectly is immeasurable.
That said, I'm very doubtful of the likelihood of me contributing something novel and useful to the GIS world -- I'm keep to learn from and stand on the shoulders of giants that got us here for at least the first bit of my foray into GIS before trying to contribute something fresh, RTFM and all that. To be fair it has taken 15 years to whittle down this particular wheel, starting from scratch feels almost disrespectful -- I'll leave that for younger explorers.
Does anyone have a really good (maybe illustrated?) guide/short reference to the world of GIS? Every time I see GIS stuff mentioned the problem space itself, solution jargon, and various movements in the ecosystem (projects being unsupported, stewards/companies changing etc) always throws me for a loop. It's certainly the case that I just haven't built enough mapping-related software to be comfortable but if there's…
Some basics:
Software-wise, GIS is a database hooked to mapping software so you can query the database and spit out maps as your answer. It's valuable because "A picture's worth a thousand words" and most data can be connected to a mappable bit of data (address, lat-long, etc).
A Geographic Information System has the following components:
1. Hardware
2. Software
3. People
4. Procedures
5. Data
6. Network (added more recently and not part of what I was taught, https://learn.canvas.net/courses/464/pages/unit-1-dot-2-iden...)
Data is the most expensive part of that. Good data is hard to come by.
People with the right skills and talents are the most critical part.
You can start a GIS project by surveying your in-house software, hardware, data flows, etc and putting together a use case. You probably already have some of the pieces you need to create a proper Geographic Information System where the data you already track can be hooked into a system for making it query-able and mappable so you can up your decision-making game.
ESRI is probably still the world leader in GIS software and they put out a certain amount of free info.
Earlier quoted context omitted.
Author of the OP here. I don't have a GIS background in particular; I do have a decade of experience building web mapping applications, and here's some of the foundational software I use: http://leafletjs.com https://shapely.readthedocs.io/ https://github.com/libgeos/geos https://rasterio.readthedocs.io/ https://gdal.org http://www.angusj.com/delphi/clipper.php
Thanks for the pointers -- Leaflet I know as the visualization layer that is basically not-mapbox-GL. The rest are new to me, and will crawl through them. One of the nice out-of-the-box systems I've come across is Pelias[0], what are your opinions on it? It bundles and provides the API so it's one of the things I've thought to self-host if I'm going to. It looks like it doesn't do tiles so I'd need to find something…
* The technical part of the academic Geography field
* Data collection and mapping work done at agencies like the USGS and municipal governments
* Work done with ESRI software (see https://joemorrison.medium.com/esri-cant-be-stopped-3b063f3d...)
Yes, Pelias is a mature project backed by a great team at https://geocode.earth - definitely one of the best options if you need an autocompleting geocoder based on OSM+other data like http://whosonfirst.org
About OSM data extracts, I also run an extracts service at http://protomaps.com/extracts that provides on-demand data updated once a minute.