this post was submitted on 13 Dec 2023
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Science Memes

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GIS nerds be like (mander.xyz)
submitted 9 months ago by [email protected] to c/[email protected]
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[–] [email protected] 28 points 9 months ago (3 children)

openstreetmaps ftw. Get that, turn on cartographic overlays (outdated scans but still useful), aerial imagery, download and import nhd data, pull up ngs website, and enjoy. Help us map rivers! Even better if you can do an actual ground survey w/ gps.

[–] [email protected] 6 points 9 months ago (1 children)

I spent way toonlong mapping our houses in my neighborhood. It's always funny to see my work on apps, I'm like shit that street is missing houses I need to get on it.

[–] [email protected] 2 points 9 months ago* (last edited 9 months ago) (1 children)

yeah, it's addictive, I started with sidewalks in my neighborhood, and before I knew it, I was mapping parking zones, fire hydrants, trash cans, benches, traffic signals, speed limits, turn lanes...

[–] [email protected] 2 points 9 months ago (1 children)

What's the best tool to map points? I walk my dog and would love to quickly drop a pin for a sewer grate or fire hydrant? Is there something I can do mobile?

[–] [email protected] 2 points 9 months ago

I've only used vespucci and it gets the job done.

[–] [email protected] 4 points 9 months ago (1 children)

Okay what is nhd and ngs? When I'm horny for aerial imagery, I'm usually browsing Landsat and Sentinel archives.

[–] [email protected] 4 points 9 months ago (2 children)

National hydrography dataset and national geodetic survey (but I actually meant USGS, they provide a lot of data, their map viewer is a good introduction).

[–] [email protected] 3 points 9 months ago

Oh thank you very much. Yes, the map viewer I often use, although I've only touched Landsat and Sentinel imagery.

[–] [email protected] 1 points 9 months ago

btw NHD data tends to be too large for JOSM to handle... my one complaint about JOSM, I feel it could be more memory efficient. Qgis can be used to process and extract large datasets, just split them up into several files per state. (You also need to merge the source files.) But it's totally worth the pain, because you get a lot of rich, high resolution data.

Depending on where you live, your state or city might also have open datasets available.

[–] [email protected] 3 points 9 months ago (1 children)

Thanks for the recommendation! Downloading osm now o7

[–] [email protected] 3 points 9 months ago

Be sure to check out the osm wiki! For editing, you can use their web viewer, but I personally prefer JOSM for more advanced work. Vespucci is a great tool for mapping on your phone.