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Posted by rcarmo 9/12/2025

QGIS is a free, open-source, cross platform geographical information system(github.com)
573 points | 127 commentspage 3
kevinkoning 9/12/2025|
I can't help but pile on here. I have had a corporate license of ArcGIS but have used QGIS instead because it simply worked better to process the data I had. ESRI and ArcGIS have a long history of reporting errors with absolutely no helpful information. I swear half the errors are something like "Error 999999: Error executing function." Good luck debugging!!
jasona123 9/13/2025||
Ah QGIS. Love working with it (it got me through university + 3 years of being in the planning industry w/o touching Esri)! hated managing it on the Mac admin side (no ARM native build and more importantly no notarized builds). I do hear v4 might fix both issues so I’m looking forward to that next month.
michaelhoney 9/12/2025||
I work with QGIS, but until recently I’ve only skated over the surface. In the last year or so I’ve found LLMs increasingly useful as a companion to help me code automation scripts or just to ask “how can I do this?” questions. QGIS is deep and powerful but that power can be hard to access. LLMs make it a lot easier.
SparkyMcUnicorn 9/12/2025||
A couple months ago I needed some info about a home/property. The county publishes a zip file of "geo data", and after downloading it I asked Claude Code how I can work with the files. It recommended QGIS, but I was lost when I opened it and searched GitHub to find this MCP server[0].

20 minutes later it had every piece of data I could possibly want placed onto the parcel on the map. It felt magical.

[0] https://github.com/jjsantos01/qgis_mcp/

ascorbic 9/13/2025|||
My wife says something similar. She's used QGIS for years, but never as the main part of her job (she's an archaeologist) and has said ChatGPT has opened up loads of stuff that would've taken her ages to work out before. It even got her using Python.
stevage 9/12/2025||
Yeah I've started doing the same thing with ChatGPT. You know that it's already read all the manuals and tutorials...
bobosola 9/12/2025||
Fabulous software. I used it to create LIDAR map tiles from free UK government LIDAR data of my local area (Hampshire, UK) at https://solentmaps.uk. When used as a layer placed under standard map tiles, you can see all sorts of long-hidden historical artefacts under modern deep foliage. The ruins of a long-forgotten WW1 hospital near me can be clearly seen under the modern day trees. Fun stuff to play with.
bongard 9/13/2025|
This is great and inspiring. Well done. Thanks!
4ndrewl 9/12/2025||
I have nothing but good things to say about QGIS.
sreekanth850 9/13/2025||
Long back i used Manifold. It was not opensource but much cheaper and faster than ArcMap
throwawayqgis 9/12/2025||
I’ve worked in the GIS space for a while, developed mapping services on the backend and frontend, the whole thing.

And yet I’ve never been able to get into QGIS. I’ve used the ogr libraries, I know that there’s an incredible amount of smart work behind these tools. 100% all due respect to everyone involved.

But I’ve found the ui so daunting that I’ve never been able to use it.

I want to be proven wrong. Are there gentle/great tutorials/guides?

I know this isn’t a “vpn software before tailscale” kind of situation. But, you know?

michaelhoney 9/12/2025||
I recommend asking ChatGPT for help. Tell it what you’re trying to do, and don’t be afraid to ask the dumbest questions.
driggs 9/13/2025||
I hate to tell you to RTFM, but the QGIS team has put a lot of effort into the User Guide and very practical Training Manual.

If you're already familiar with typical GIS workflows, you'll breeze through them, and they'll help you wrap your head around the QGIS way of doing things.

https://docs.qgis.org/3.40/en/docs/user_manual/

https://docs.qgis.org/3.40/en/docs/training_manual/

And if you're into books, Locate Press is run by some of the original QGIS authors, and many of their books are very QGIS centric.

https://locatepress.com/books

jokoon 9/12/2025||
I had geo data to find a new city to move out, with lat lon, population, price, etc

I just used leaflet, it was fine

spatialite is also good enough as a spatial database

unless you are doing complex stuff with GIS data, I don't see the point of using such a large software

rcarmo 9/12/2025|
leaflet is a tile rendering library. You can't edit or massage the data in any way, and most GIS work is not that complex--but it does require handling paths and other things that leaflet cannot really do.
blu3h4t 9/13/2025||
I’ve recently had a certificate related error on mine.
fithisux 9/12/2025|
I have used it in the past, it is excellent.
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