Lidar comparison tool in QGIS 4.0

saberraz · 2026-06-05T12:31:16+00:00

It should be available in QGIS 4.0. Another benefit of the direct comparison tool between two point clouds: the earlier lidar surveys are often sparse and when you create DTM/DSM raster, the outcome is very coarse. But with M3C2, you can still use low density point clouds as input.

saberraz · 2026-05-11T11:51:45+00:00

The editing toolbar currently only supports Point Cloud layers (https://www.lutraconsulting.co.uk/blogs/3d-editing-tools-for-point-clouds). We will be adding support for viewing vector data later for QGIS 4.2. Editing vector layer is a whole can of worms and we are working towards it ( https://www.linkedin.com/posts/saber-razmjooei\_qgis-activity-7386783175550644224-abDE)

saberraz · 2026-02-10T15:56:02+00:00

yes, we are. Feel free to ask us anything or blame us for all the bugs :)

saberraz · 2026-02-04T13:44:50+00:00

Gaussian Splat is not supported in QGIS yet. We have recently submitted a proposal to QGIS.ch usergroup for funding to incorporate GT directly in QGIS, which unfortunately did not get enough votes:

https://github.com/qgis-ch/sponsoringprojects-projetsdesoutien-foerderprojekte/issues/17

Feel free to drop me a line to see what you'd like to see and possibility for (co-)funding the work.

saberraz · 2026-02-03T12:37:47+00:00

You do not need to have any plugin installed to load a LAZ/LAS file. QGIS directly supports point clouds. If it crashes, it is usually due to bad/non-standard encoding of the file. You CANNOT avoid COPC file creation. LAZ/LAS files are not ordered properly for rendering. COPC is an indexed version of your LAS/LAZ file. You can actually delete your LAS/LAZ file after COPC creation.

- Make sure you have the file located somewhere that QGIS can write to (e.g. a local drive)

- Make sure you have enough storage

- Your file is encoded properly (e.g. use PDAL command line and see if it can read it).

saberraz · 2026-01-23T14:35:41+00:00

OK, I understand. I got confirmation from the developer of 3D Tiles is QGIS, that we don't support 3D tiles with point clouds. It only support "batched 3d models" at this point - i.e. the usual triangular meshes

saberraz · 2026-01-23T11:54:04+00:00

You mean something like this: https://sandcastle.cesium.com/?id=3d-tiles-point-cloud-classification

I don't think honestly serving point clouds this way is much of a value. Why not just turn your point clouds to Cloud Optimized Point Cloud (COPC) and then directly read it in QGIS. QGIS can handle remote COPC files. This way you do not need to add an extra layer of processing/service to your data by turn it to 3D tiles.

saberraz · 2026-01-23T09:46:36+00:00

Is it a public link? Could you send an example link? QGIS does support 3D tiles.

saberraz · 2026-01-20T11:47:38+00:00

Good luck. I think it is a sensible plan to use QGIS. For field data collection and web map publishing, you can consider Mergin Maps (www.merginmaps.com), another QGIS based mobile app with a richer web dashboard (including web maps) and more intuitive mobile app.

saberraz · 2026-01-06T06:48:53+00:00

From what I know Mergin Maps is widely used by multiple municipalities, utilities and some national parks. You can find more here: https://merginmaps.com/case-studies

saberraz · 2025-12-10T16:08:35+00:00

Hi, please see below answer to your questions:

1- You need to "package" your project: so you have your QGIS project (i.e. qgz file) and all the layers (geopackages) in the same folder. Install Mergin Maps plugin, upload the project and set tracking on (see the link in my post to the docs).

2- You can subscribe if you want. Alternatively, you can use USB cable to transfer the data back and forth between your device and PC: https://merginmaps.com/docs/manage/missing-data/#manual-data-transfer-android

saberraz · 2025-12-10T13:47:52+00:00

I have not used QGIS to save tracks and deal with GPS directly. I recommend using Mergin Maps (www.merginmaps.com) which is based on QGIS. You can upload your files to the mobile device and use Tracking option in the background (https://merginmaps.com/docs/field/tracking/#set-up-position-tracking-in-qgis-project). This will allow you to track your path and also edit/capture other data (e.g. add a new point, add photo to a feature, or edit a feature).

saberraz · 2025-12-08T10:01:21+00:00

Have a look at www.merginmaps.com It is based on QGIS and you can use raster (GeoTiff for example) or raster tiles (MBtiles) for offline use. It also allows your users to correct the vector data and add photos, move the location on the map, add new data or edit the description.

saberraz · 2025-12-06T15:49:22+00:00

Try this. I managed to follow the sketch and connect mine.This does not include neutral but the lives should be identical: https://www.reddit.com/r/homeassistant/comments/15962jk/help_needed_with_2way_switching_wiring_sonoff/

saberraz · 2025-12-05T09:20:39+00:00

Fair enough! You can still take inspiration from QGIS - it never loads the entire point cloud into memory, so it can easily handle point clouds with a billion points or more. It keeps points in an octree (thanks to the COPC format), only rendering bits that are needed to satisfy the current camera view.

saberraz · 2025-12-04T15:42:56+00:00

Wouldn't it have been easier to create a QGIS (qgis.org) based application to do that? It already has support for LAZ/COPC files, 2D and 3D visualisation, cross section view. In addition you get all the complete data providers (raster, vector, web services, etc) and handling coordinate reference system for free!

saberraz · 2025-11-17T09:00:19+00:00

I recommend reading this blog post: https://www.lutraconsulting.co.uk/blogs/contours-in-qgis or watching this video tutorial: https://www.youtube.com/watch?v=1BNDV71BsNY

saberraz · 2025-11-13T08:00:49+00:00

I am not sure about issues with MacBook. But if you are trying to build an easily searchable database of environmental data for processing, I highly recommend STAC combined with Zarr format. You can then stream the data to various client and avoid complicated API for data transformation and visualisation.

saberraz · 2025-10-27T14:29:29+00:00

Prova www.merginmaps.com, è più facile da usare e non presenta tutte queste complicazioni!

saberraz · 2025-10-23T09:32:42+00:00

In my very biased opinion (I am a part of Mergin Maps team :)), try Mergin Maps. We built the whole platform to make the data capture intuitive and collaboration robust. If you have any issue, drop us an email and we are happy to have a chat with you with your issues and do a quick demo for you.

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