@vpicavet@mastodon.social
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vpicavet

@vpicavet@mastodon.social

CEO @ Oslandia - engineering open geo stuff 🌍

#OpenSource #GIS #FOSS4G #OSGeo #QGIS #PostGIS #OpenOrganization #DistributedCompany #FullRemoteWork

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ChristopheLeBas, to Dragonlance French
@ChristopheLeBas@vis.social avatar

👀 Today, i tried something special : playing with lidar datas from IGN (Institut national de l'information géographique et forestière) 🎚️

First of all, you can see here a standard lidar file. Nice and creepy ^^ 😨

vpicavet,
@vpicavet@mastodon.social avatar

@ChristopheLeBas You can dynamically apply an RGB image on a LIDAR data in , you can see the examples here https://giro3d.org/examples/index.html

vpicavet,
@vpicavet@mastodon.social avatar

@ChristopheLeBas The second one is the 2D layer corresponding to your LIDAR data. QGIS displays all 2D layers by default, in a 3D view. Without any elevation it is at elevation 0, so below your 3D data. You can disable the 2D layer, or specify a DEM to use as elevation so that the 2D layer will be projected onto the DEM, theoritically at the same place as the PointCloud data.

dcbuchan, to random
@dcbuchan@aus.social avatar

If you've gone from a 5-day work week to a 4-day work week I'd like to hear of your experience as I'm considering the same.

Did you have take a pay cut?
Do you work 5 days over 4?

How has it benefitted you?
How has it benefitted your employer?

(please boost)

vpicavet,
@vpicavet@mastodon.social avatar

@dcbuchan at Oslandia it is common to work 80% or 90%, no less than 60% allowed though.

I am myself off on wednesdays, and could not go back, really gives you freedom, quality time with family, more focus when working.

Oslandia also allows additional non-paid days off whenever needed.

We ask part-timers to choose a fixed day off per week, most popular are wednesdays or fridays.

In France usually part-time = pay cut but you keep social advantages like full-timers.

nyalld, to random
@nyalld@mastodon.social avatar

Hey spatial/point cloud experts ... Does anyone have any experience with Gaussian splats? Is there any value from a geospatial context? Any tools to convert these to standard point cloud formats? (I'd love to play with https://lumalabs.ai/176ed9aa-514f-4a45-9343-d4c708c86570?mode=sparkles in ! 😍)

vpicavet,
@vpicavet@mastodon.social avatar

@nyalld you cannot really "convert" splats to pointcloud since Gaussian splatting is a rendering technique, not really a data format. For now there is no implementation allowing mixing Gaussian splatting rendering and classic 3D rendering, making GS a "silo" app with few use cases involving data mixing and interoperability, which is needed for GIS. ( on my side, I'd love to see Splatoon implemented in QGIS :-D ). Get in touch if you want to dig into the topic

cfeditions, to random French
@cfeditions@piaille.fr avatar

Gros succès pour Ada ! Elle décide de revenir, avec un deuxième tirage 😃 https://cfeditions.com/ada/

vpicavet,
@vpicavet@mastodon.social avatar

@cfeditions Vous avez pu corriger les deux coquilles entre les deux tirages ?

Mixed_Pixels, to random

We have a static STAC with +/- 25.000 images. A simple spatial + temporal query takes about 50 seconds. That's too long. Which options do we have to improve the performance?

vpicavet,
@vpicavet@mastodon.social avatar

@Mixed_Pixels https://github.com/stac-utils/pgstac ?

RagnarHeidar, to random
@RagnarHeidar@mastodon.social avatar

We finally managed to publish an English version of the volcanic hazard map for

Out of all the map I´ve made at the Icelandic Met Office this series of hazard maps is the biggest one yet in terms of impact, internal discussion, public discussion and weight it bears and all the decision that are made based on it. I see this map all over the internet, TikTok, YouTube thumbnails, Facebook, you name it. There is probably enough material for an extended conference talk just about this map

vpicavet,
@vpicavet@mastodon.social avatar

@RagnarHeidar Is it made with ? What is the licence of the map, can we reproduce it in a blog article ? ( citing source of course ). Good luck with the crisis situation !

geotribu, to Flooring French
@geotribu@mapstodon.space avatar

🦆 DuckDB ça vous parle ? C'est l'un des sujets data du moment 📊

🗺️ Mais au fait, pour les données géographiques ?

@florent001 publie un article sur sur la façon dont DuckDB fait bouger les lignes (ou devrais-je dire les colonnes 😉 ) pour le traitement des données spatiales.

Après quelques éléments de compréhension (format , projections...), il donne des exemples pratiques avec les données de l'@overturemaps

👉 https://geotribu.fr/articles/2023/2023-12-19_duckdb-donnees-spatiales/

vpicavet,
@vpicavet@mastodon.social avatar

@RegisHaubourg @geotribu Vous avez 3Po de données à analyser ? Vous pensiez que la distribution c'était la spécialité du Père Noël uniquement ? Vous avez perdu pied à "orienté colonne" ? Vous pensiez que "sharding" c'etait pour boucher le port de Marcheille ?

yorik, to random
@yorik@fosstodon.org avatar

Hard time - Yorik's blog https://yorik.uncreated.net/blog/2023-024-hard-time

vpicavet,
@vpicavet@mastodon.social avatar

@yorik We should not wait for such post to say thank you for everything you do and how you make the open CAD/BIM world progress, but better late than never. Therefore, a huge , and lots of good vibes for these difficult times.

rjhale1971, to random
@rjhale1971@fosstodon.org avatar

DuckDB and QGIS

I've not taken time over the last few months to "play" with geo. I've been hitting conferences and marketing and doing all the things I sort of don't like that much. More talk of conferences coming. One thing I've seen pop up more and more is duckdb. Wht is it? Basically a serverless database. It's local. You use it for data analysis or data update locally.

https://www.northrivergeographic.com/duckdb-and-qgis/

vpicavet,
@vpicavet@mastodon.social avatar

@migurski @nyalld @rjhale1971 Indeed, / already has optimizations for column-oriented formats with a dedicated API. Supporting this natively in would need some low-level work though, which has to be carefully designed and agreed on collectively. @EvenRouault already made interesting feedback on this topic. We can go step by step, evaluating use cases with the plugin before implementing into core. Get in touch with @oslandia if you want to help and/or fund the effort !

RegisHaubourg, to random French
@RegisHaubourg@mastodon.social avatar

du matin bucolique
Un chouille frais cependant. 🥶

Un vélo devant une montagne calcaire

vpicavet,
@vpicavet@mastodon.social avatar

@nitot @RegisHaubourg C'est Chamechaude, avec vue sur le village du Sappey En Chartreuse :-)

vpicavet,
@vpicavet@mastodon.social avatar

@RegisHaubourg @nitot 🤦‍♂️

hareldan, to random
@hareldan@mapstodon.space avatar

One of my last predictions on the Xcrement is full support for @duckdb in the QGIS environment within a year.

well, here we go
https://oslandia.com/en/2023/11/16/un-plugin-duckdb-dans-qgis/

vpicavet,
@vpicavet@mastodon.social avatar

@hareldan well, full support will need further funding (R / W, port to core...) but this is a good starting point. Get in touch if you want to help!

jpetazzo, to random
@jpetazzo@hachyderm.io avatar

I'd like to give a shout-out to draw.io; each time I need to doodle some diagrams I end up using that, and (at least for me!) it's exactly the right mix of features - i.e. enough features to do what I want, but not too much (which means that the interface remains fairly light and easy to use).

I wanted to give them money but I didn't see a straightforward way to do that 😅

So here is some free advertising because they totes deserve it!

#diagrams #schemas #draw

vpicavet,
@vpicavet@mastodon.social avatar

@jpetazzo Excalidraw is pretty good too : https://github.com/excalidraw/excalidraw especially if you need collaboration. And also #Opensource ! #diagrams #schemas #drawing

bloomingonion, to random

Does anyone know a good FOSS alternative to ArcGIS Online. Self-hosting is not a deal breaker.

vpicavet,
@vpicavet@mastodon.social avatar

@bloomingonion server + could be a good choice, depending on your global GIS architecture and needs. See examples on project page : https://github.com/qgis/qwc2-demo-app

vpicavet,
@vpicavet@mastodon.social avatar

@bloomingonion QWC2 can reuse data forms designed in QGIS, with similar widgets. Even though simpler than a full survey app, it allows fast simple web apps. Using QField would be another option if you want a mobile app, centered on map data gathering. For powerful survey-oriented work, you can look at kobo collect, but you have to import to a GIS ( QGIS/PostGIS/QWC2) afterwards, the process is not as simple.

gael, to random French
@gael@mastodon.social avatar

Just saying... ✌️

vpicavet,
@vpicavet@mastodon.social avatar

@gael Fairphone 5 running smoothly on /e/os here ! Thanks a lot !

jhilden, to random
@jhilden@vis.social avatar

Stylesheets would be pretty high on my wish list.
Like fonts, colors, etc. that you can modify in one place and have them auto-update everywhere if you change them.

Maybe there is some sort of workaround with variables?

vpicavet,
@vpicavet@mastodon.social avatar

@jhilden You can use project variables in any expression. This lets you have global settings for your projects.

vpicavet,
@vpicavet@mastodon.social avatar

@jhilden "StyleSheets" in the sense of CSS do not exist in QGIS, as rendering maps is quite different from rendering HTML.
Cartographic Styles are coded with a QGIS specific model, which can be saved as QML/QLR/XML files, or stored in a style library locally or online ( see QGIS style manager https://docs.qgis.org/3.28/en/docs/user_manual/style_library/style_manager.html ).

vpicavet,
@vpicavet@mastodon.social avatar

@jhilden Having something like "Linked styles" to automatically retrieve styles from their reference location on project loading could be a nice addition. Or a feature to re-apply styles everywhere. Feel free to add a feature request, and fund the development if you can.

stevenfeldman, (edited ) to random
@stevenfeldman@mastodon.me.uk avatar

Apparently only has cash for another year. Surely some inspired investors will see the opportunity?

https://www.standard.co.uk/business/what3words-lifesaving-app-that-finds-everything-apart-from-profits-b1111335.html

vpicavet,
@vpicavet@mastodon.social avatar

@geospacedman @stevenfeldman Running a lawyer-based company can be pretty costly these days… 🎈 🎊 🍿

cartocalypse, to random
@cartocalypse@norden.social avatar

Huh, am I seeing this right that there is no simple/small FOSS browser-based COPC viewer?

vpicavet,
@vpicavet@mastodon.social avatar

@Brett_E_Carlock @klaskarlsson @cartocalypse Is there any plan to switch away from potree for ODM ? Because the potree bus factor = 1 is frightening for such a project. We may be interested in providing tech and help to switch...

vpicavet,
@vpicavet@mastodon.social avatar

@Brett_E_Carlock @klaskarlsson @cartocalypse A lot of improvement on side recently if you looked earlier, you can check fresh examples on giro3D.org. We have use cases where we use giro3D as a 2D map too, with OGC or CoG layers on top. Having a single 2D/3D view in ODM would be great, current ergonomics are not that easy to grasp.

bkeegan, to random Spanish
@bkeegan@hci.social avatar

Observation:
spatial analytics tools (, , )—despite heroic efforts from their developers—are frequently broken and/or unusable because of fragile and complex dependencies.

Research Questions:

  1. Why has the open source spatial analytics ecosystem resisted greater centralization or coordination?

  2. What social and material factors shape(d) these relationships?

  3. How does popular proprietary software like ArcGIS distort open source alternatives?

vpicavet,
@vpicavet@mastodon.social avatar

@bkeegan @martinfleis @mszll @geopandas Your main problem is actually the heterogeneity of the target environment. You can solve this using a virtual machine (e.g. VirtualBox) so that each student get the exact same environment ( which you can setup yourself beforehand ). linux distribution is a good example of a fully packaged GIS environment you can use as a starting point ( not sure it includes all geopandas deps though).

vpicavet,
@vpicavet@mastodon.social avatar

@mszll @bkeegan @martinfleis @geopandas Sounds like an over-simplification of the issue. You can teach choropleth maps on any platform with QGIS without problem.
Whatever the software, opensource or proprietary, if you want to deploy to heterogeneous platforms, you will face issues. actually does a good job at being multiplatform and quite stable if you stick to LTR. "There are some issues" yes, but it concerns all IT, it is a question of target homogeneity.

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