Toots for underdarkGIS@fosstodon.org account

Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2025-01-13 at 18:04

TIL what Wurman Dots are 🔴 ⭕ 🔴

https://github.com/nextgis/qgis_wurman_dots?tab=readme-ov-file

HT to the @qgis Plugin Update https://blog.qgis.org/2025/01/13/plugin-update-december-2024/

[#]GISChat #Cartography #Maps #DataViz #QGIS #Mapping

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2025-01-11 at 20:04

[#]Trajectools 2.4 release

In this new release, you will find new algorithms, default output styles, and other usability improvements, in particular for working with public transport schedules in #GTFS format

http://anitagraser.com/2025/01/11/trajectools-2-4-release/

[#]QGIS #GISChat #MovementDataAnalytics #PublicTransport #Transit

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2025-01-09 at 19:48

[#]QGIS is also listed on @Bellingcat ’s Online Open Source Investigation Toolkit!

https://bellingcat.gitbook.io/toolkit/categories/maps-and-satellites/maps

[#]bcattols #gischat #osgeo #opensource #bellingcat #maps

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2025-01-09 at 17:09

TIL that @qgis has been recognized as a #DigitalPublicGood :blobcatcool:

https://www.digitalpublicgoods.net/r/qgis

[#]qgis #gischat #osgeo #opensource #gis

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2025-01-08 at 22:00

I've had smoother releases 🙃

But hey, #MovingPandas 0.21 is here https://github.com/movingpandas/movingpandas/releases

Make sure to update if you want to use the new #QGIS #Trajectools plugin version which will be released soon 🆙

[#]MovementDataAnalytics #MobilityDataScience #Python #DataScience #GISChat

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2025-01-08 at 18:08

Yay or nay?

I'm contemplating changing the behavior of the TemporalSplitter in @movingpandas because I think that there should be no gaps in the results 🤔

Details: https://github.com/movingpandas/movingpandas/issues/446

[#]FollowerPower #GISChat #MovingPandas #MovementDataAnalytics

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2025-01-06 at 00:02

The last 2 vanished (were removed?) pretty quickly. The other two are still there

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2025-01-05 at 20:00

It's 4 now :(

Let's see what happens if I report them 😈

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2025-01-05 at 19:46

Created a #bsky account and first thing that happens are two bot followers 🤦

(I'm not planning to use this account for anything else than reaching out to people to ask them to bridge to fedi)

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2025-01-05 at 11:53

Switching to geometry generator helps. Maybe I misunderstand label anchoring mechanics

[#]QGIS #GISChat #Mapping #Labeling

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2025-01-04 at 18:12

Why does Label anchoring mess up here? 🤔

I'm working on a default output style for Trajectools #GTFS algorithms but these labels are weird. It should always place the start_stop_name at the beginning of the line.

[#]GISChat #FollowerPower #QGIS

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2025-01-03 at 09:39

Interesting to see the distance between Maplands (home of

@qgis) and Geosppytiallia (home of @movingpandas) in #MapOfGithub https://anvaka.github.io/map-of-github/#11.91/27.53081/20.1991

Why are Lidaria and Carto3Dica in between?

It's all #AI(Landia) 😜 #GeoAI

[#]GISChat #QGIS #MovingPandas #SpatialDataScience

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2024-12-29 at 20:47

tl;dr: Don't fire your GIS analyst just yet

Maybe I'll try out the Kue plugin tomorrow. Stay tuned.

7/7

[#]GISChat #QGIS #GIS #LLMs #GeoAI

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2024-12-29 at 20:37

The plugin allows users to select different OpenAI models. Based on my limited experience, gpt-4o vastly outperforms gpt-4o-mini.

Every request to the assistant creates multiple API requests, depending on different factors that I don't fully understand yet. Therefore, it is not easy to predict the costs of a single experiment.

In total my ~10 experiments resulted in 63 GPT-4o and 10 GPT-4o-mini requests, totaling $0.36 for input and output.

6/n

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2024-12-29 at 20:18

Let's take it one step further: I asked "Select all countries that border Austria"

The resulting output? -- All countries 🤔

It used the "Select by location tool" instead of the Extract algorithm.

Changing the prompt to "Extract all countries that border Austria" didn't help. No result this time.

The plugin invents an OUTPUT parameter that doesn't exist in Select algorithms.

5/n

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2024-12-29 at 20:14

Turns out that the plugin is having issues with Geopackage inputs (https://github.com/Teakinboyewa/SpatialAnalysisAgent/issues/19)

So, let's try again with our trusty old @shapefile

Success 🤩

4/n

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2024-12-29 at 20:11

First experiment: using the QGIS world layer, ask the assistant to select Austria 🇦🇹

The agent 🤖 rumbles along and (after fixing an issue https://github.com/Teakinboyewa/SpatialAnalysisAgent/issues/21) creates a workflow diagram and some code that runs ... but doesn't provide any output ...

3/n

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2024-12-29 at 20:06

Compared to the two plugins I discussed in October (https://anitagraser.com/2024/10/06/llm-based-spatial-analysis-assistants-for-qgis/), this plugin looks more mature and it's publicly available for testing.

All you need is an OpenAI API key.

(Support for other / local models is planned: https://github.com/Teakinboyewa/SpatialAnalysisAgent/issues/15)

2/n

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2024-12-29 at 20:04

"Fun" with #QGIS #LLM assistants 👩‍💻

Looking into the SpatialAnalysisAgent plugin today: https://github.com/Teakinboyewa/SpatialAnalysisAgent

1/n

[#]gischat #gis #geospatial #spatialdatascience

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Written by Anita Graser 🇪🇺🇺🇦🇬🇪 on 2024-12-17 at 09:59

Urban Mobility Insights with #MovingPandas & #CARTO in #Snowflake

Today, I want to point out a blog post over at written together with my fellow co-authors and @emeraldseu project team member Argyrios Kyrgiazos.

For the technically inclined, the highlight are the presented UDFs in Snowflake to process and transform the trajectory data.

http://anitagraser.com/2024/12/17/urban-mobility-insights-with-movingpandas-carto-in-snowflake/

[#]GISChat #MovementDataAnalytics

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