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QGIS Planet

QGIS and point clouds in MapScaping podcast

Listen to the latest developments in point clouds and QGIS from Martin Dobias: MapScaping podcast.

Martin Dobias, our CTO and the lead developer of 3D and point clouds integration in QGIS sat down with Daniel O’Donohue from Mapscaping to talk about point clouds and QGIS.

Martin discusses his early involvment with QGIS back in 2005 and how he started his journey to become a QGIS developer.

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QGIS 3.28 improvements for working with ESRI formats and services

The QGIS 3.28 release is an extremely exciting release for all users who work in mixed software workplaces, or who need to work alongside users of ESRI software. In this post we’ll be giving an overview of all the new tools and features introduced in 3.28 which together result in a dramatic improvement in the workflows and capabilities in working with ESRI based formats and services. Read on for the full details…!

Before we begin, we’d like to credit the following organisations for helping fund these developments in QGIS 3.28:

  • Naturstyrelsen, Denmark
  • Provincie Gelderland, Netherlands
  • Uppsala Universitet, Department of Archaeology and Ancient History
  • Gemeente Amsterdam
  • Provincie Zuid-Holland, Netherlands

FileGeodatabase (GDB) related improvements

The headline item here is that QGIS 3.28 introduces support for editing, managing and creating ESRI FileGeodatabases out of the box! While older QGIS releases offered some limited support for editing FileGeodatabase layers, this required the manual installation of a closed source ESRI SDK driver… which unfortunately resulted in other regressions in working with FileGeodatabases (such as poor layer loading speed and random crashes). Now, thanks to an incredible reverse engineering effort by the GDAL team, the open-source driver for FileGeodatabases offers full support for editing these datasets! This means all QGIS users have out-of-the-box access to a fully functional, high-performance read AND write GDB driver, no further action or trade-offs required.

Operations supported by the GDAL open source driver include:

  • Editing existing features, with full support for editing attributes and curved, 3D and measure-value geometries
  • Creating new features
  • Deleting features
  • Creating, adding and modifying attributes in an existing layer
  • Full support for reading and updating spatial indexes
  • Creating new indexes on attributes
  • “Repacking” layers, to reduce their size and improve performance
  • Creating new layers in an existing FileGeodatabase
  • Removing layers from FileGeodatabases
  • Creating completely new, empty FileGeodatabases
  • Creating and managing field domains

On the QGIS side, the improvements to the GDAL driver meant that we could easily expose feature editing support for FileGeodatabase layers for all QGIS users. While this is a huge step forward, especially for users in mixed software workplaces, we weren’t happy to rest there when we  had the opportunity to further improve GDB support within QGIS!

So in QGIS 3.28 we also introduced the following new functionality when working with FileGeodatabases:

FileGeodatabase management tools

QGIS 3.28 introduces a whole range of GUI based tools for managing FileGeodatabases. To create a brand new FileGeodatabase, you can now right click on a directory from the QGIS Browser panel and select New – ESRI FileGeodatabase:

After creating your new database, a right click on its entry will show a bunch of available options for managing the database. These include options for creating new tables, running arbitrary SQL commands, and database-level operations such as compacting the database:

You’re also able to directly import existing data into a FileGeodatabase by simply dragging and dropping layers onto the database!

Expanding out the GDB item will show a list of layers present in the database, and present options for managing the fields in those layers. Alongside field creation, you can also remove and rename existing fields.

Field domain handling

QGIS 3.28 also introduces a range of GUI tools for working with field domains inside FileGeodatabases. (GeoPackage users also share in the love here — these same tools are all available for working with field domains inside this standard format too!) Just right click on an existing FileGeodatabase (or GeoPackage) and select the “New Field Domain” option. Depending on the database format, you’ll be presented with a list of matching field domain types:

Once again, you’ll be guided through a user-friendly dialog allowing you to create your desired field domain!

After field domains have been created, they can be assigned to fields in the database by right-clicking on the field name and selecting “Set Field Domain”:

Field domains can also be viewed and managed by expanding out the “Field domains” option for each database.

Relationship discovery

Another exciting addition in QGIS 3.28 (and the underlying GDAL 3.6 release) is support for discovering database relationships in FileGeodatabases! (Once again, GeoPackage users also benefit from this, as we’ve implemented full support for GeoPackage relationships via the “Related Tables Extension“).

Expanding out a database containing any relationships will show a list of all discovered relationships:

(You can view the full description and details for any of these relationships by opening the QGIS Browser “Properties” panel).

Whenever QGIS 3.28 discovers relationships in the database, these related tables will automatically be added to your project whenever any of the layers which participate in the relationship are opened. This means that users get the full experience as designed for these databases without any manual configuration, and the relationships will “just work”!

Dataset Grouping

Lastly, we’ve improved the way layers from FileGeodatabases are shown in QGIS, so that layers are now grouped according to their original dataset groupings from the database structure:

Edit ArcGIS Online / Feature Service layers

While QGIS has had read-only support for viewing and working with the data in ArcGIS Online (AGOL) vector layers and ArcGIS Server “feature service” layers for many years, we’ve added support for editing these layers in QGIS 3.28. This allows you to take advantage of all of QGIS’ easy to use, powerful editing tools and directly edit the content in these layers from within your QGIS projects! You can freely create new features, delete features, and modify the shape and attributes of existing features (assuming that your user account on the ArcGIS service has these edit permissions granted, of course). This is an exciting addition for anyone who has to work often with content in ArcGIS services, and would prefer to directly manipulate these layers from within QGIS instead of the limited editing tools available on the AGOL/Portal platforms themselves.

This new functionality will be available immediately to users upon upgrading to QGIS 3.28 — any users who have been granted edit capabilities for the layers will see that the QGIS edit tools are all enabled and ready for use without any further configuration on the QGIS client side.

Filtering Feature Service layers

We’ve also had the opportunity to introduce filter/query support for Feature Service layers in QGIS 3.28. This is a huge performance improvement for users who need to work with a subset of a features from a large Feature Service layer. Unfortunately, due to the nature of the Feature Service protocol, these layers can often be slow to load and navigate on a client side. By setting a SQL filter to limit the features retrieved from the service the performance can be dramatically increased, as only matching features will ever be requested from the backend server. You can use any SQL query which conforms to the subset of SQL understood by ArcGIS servers (see the Feature Service documentation for examples of supported SQL queries).

 

What’s next?

While QGIS 3.28 is an extremely exciting release for any users who need to work alongside ESRI software, we aren’t content to rest here! The exciting news is that in QGIS 3.30 we’ll be introducing a GUI driven approach allowing users to create new relationships in their FileGeodatabase (and GeoPackage!) databases.

At North Road we’re always continuing to improve the cross-vendor experience for both ESRI and open-source users through our continued work on the QGIS desktop application and our SLYR conversion suite. If you’d like to chat to us about how we can help your workplace transition from a fully ESRI stack to a mixed or fully open-source stack, just contact us to discuss your needs.

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View and track changes in QGIS

With the recent changes to the Mergin Maps plugin for QGIS, you can visualise the local changes before synchronising your data.

Have you ever been in the situation when, after making a lot of changes in your Mergin Maps project, you hesitate to press Sync button because you are not sure that all required changes are made or afraid that some unwanted edits were introduced? Or maybe you need to review the work done and see what actually have changed between two versions? If the answer to any of these questions is “yes” then you will like the changes visualisation functionality we introduced in the 2022.4 version of the Mergin Maps plugin for QGIS.

Changes visualisation functionality comes handy in two use-cases: revising local changes made in the Mergin Maps project before syncing them with the server and getting a list of changes between two versions of the project. Let’s take a closer look at this feature.

Local changes visualisation

While working with Mergin Maps project, the user can at any time revise their current changes made locally. First, make sure that all your layer’s edits are saved (committed) as currently viewing of the unsaved changes is not supported. Then right-click on any vector layer and select “Show Local Changes” entry in the context menu.

Accessing local changes from context menu

Accessing local changes from context menu

This will open the Changes Viewer dialog. Each vector layer with local changes has its own tab in the Changes Viewer dialog, the name of the tab matches the layer name and also contains information about the number of changes in this specific layer. Local changes are shown on the map and in the tabular form, to distinguish different types of edits a following color codes are used: inserts (new features) are green, edits orange and deletions red. It is possible to enlarge or reduce the size of the map and table by dragging the splitter between them, splitter position is applied to all tabs and will be saved and reused on the further dialog calls.

Features added, deleted and modified in map and tabular views

Features added, deleted and modified in map and tabular views

Map canvas in the Changes Viewer dialog supports basic operations like panning as well as zooming in and out. By default, all project layers are shown on the map to provide better context, but it is possible to toggle their visibility by unchecking the “Toggle Project Layers” button in the toolbar above the map. When this button is unchecked, only changes from the current vector layer are shown.

If, after some panning/zooming, you need to return to the extent where all changes are visible — press “Zoom Full” button. Also, it is possible to select a specific feature(s) in the table below map and zoom to them by clicking the “Zoom To Selection” button. Finally, changes can be added as a new memory layer to the current project. To do so, click “Add to project” button and choose one of the options: add changes from the current layer or add all changes from all layers. For each changed layer, a new memory layer will be added to the current project. These changes layers will preserve the same color coding for features and attribute table as used in the Changes Viewer dialog. Please note, that these layers should be manually removed from the project before the sync, unless it is your intention to make them a part of your Mergin Maps project. Another way to revise local changes is to open Changes Viewer from the Project Status dialog by clicking “View Changes” button.

Mergin Maps Processing tools

Sometimes one may want to export local changes as a vector layer and save that file for further usage. Of course, this can be done with the help of Changes Viewer dialog, but it is time-consuming, especially when the Mergin Maps project has many layers or if there is a need to check local changes in several projects. To cover this use-case, we also provide “Extract local changes” tool. This tool is a part of the Mergin Maps QGIS plugin and can be found under the “Mergin Maps” group in the Processing Toolbox.

Mergin Maps Processing tools to create changeset

Mergin Maps Processing tools to create changeset

In the tool dialog you need to specify a directory with your Mergin Maps project, select a layer of interest either choosing from available layer or selecting a GeoPackage file in the project directory and layer in this file.

Processing tool to extract local changes

Processing tool to extract local changes

An output layer containing local changes will be created as a temporary or regular layer and added to the current project. This layer will have the same styling (both for features and attribute table) as the layers produced by Changes Viewer dialog.

Result of the local change processing tool

Result of the local change processing tool

The “Create diff” tool comes handy when you need to revise the changes between two versions of the layer in the Mergin Maps project. This tool is also a part of the Mergin Maps QGIS plugin, and it is implemented as a Processing algorithm. The “Create diff” tool can be found under the “Mergin Maps” group in the Processing Toolbox.

The tool dialog is quite similar to the “Extract local changes” tool dialog. Fill in input values: directory of your Mergin Maps project, layer of interest, start and end version numbers. Finally, specify location of the output vector layer or leave the field empty if you want it as a temporary layer in your current project. After clicking “Run” the tool will query the server for information and generate a vector layer containing all changes made between specified layer versions. For example, if some field value was changed in one version and then the same field was changed again in another version, then only the last change will be shown in the output changes file.

This feature is an another step in our ongoing efforts to create an easy-to-use tool for collaborative data collection and data management. If you need help or want to share your experience with Mergin Maps QGIS plugin, please join us in the community chatroom, and we will be happy to hear your thoughts.

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SLYR Update — November 2022

Our SLYR tool is the complete solution for full compatibility between ArcMap, ArcGIS Pro and QGIS. It offers a powerful suite of conversion tools for opening ESRI projects, styles and other documents directly within QGIS, and for exporting QGIS documents for use in ESRI software.

A lot has changed since our last SLYR product update post, and we’ve tons of very exciting improvements and news to share with you all! In this update we’ll explore some of the new tools we’ve added to SLYR, and discuss how these tools have drastically improved the capacity for users to migrate projects from the ESRI world to the open-source world (and vice versa).

ArcGIS Pro support

The headline item here is that SLYR now offers a powerful set of tools for working with the newer ArcGIS Pro document formats. Previously, SLYR offered support for the older ArcMap document types only (such as MXD, MXT, LYR, and PMF formats). Current SLYR versions now include tools for:

Directly opening ArcGIS Pro .lyrx files within QGIS

LYRX files can be dragged and dropped directly onto a QGIS window to add the layer to the current project. All the layer’s original styling and other properties will be automatically converted across, so the resultant layer will be an extremely close match to the original ArcGIS Pro layer! SLYR supports vector layers, raster layers, TIN layers, point cloud layers and vector tile layers. We take great pride in just how close the conversion results are to how these layers appear in ArcGIS Pro… in most cases you’ll find the results are nearly pixel perfect!

In addition to drag-and-drop import support, SLYR also adds support for showing .lyrx files directly in the integrated file browser, and also adds tools to the QGIS Processing Toolbox so that users can execute bulk conversion operations, or include document conversion in their models or custom scripts.

ArcGIS Pro map (mapx) and project (aprx) conversion

Alongside the LYRX support, we’ve also added support for the ArcGIS Pro .mapx and .aprx formats. Just like our existing .mxd conversion, you can now easily convert entire ArcGIS Pro maps for direct use within QGIS! SLYR supports both the older ArcGIS Pro 2.x project format and the newer 3.x formats.

Export from QGIS to ArcGIS Pro!

Yes, you read that correctly… SLYR now allows you to export QGIS documents into ArcGIS Pro formats! This is an extremely exciting development… for the first time ever QGIS users now have the capacity to export their work into formats which can be supplied directly to ESRI users. Current SLYR versions support conversion of map layers to .lyrx format, and exporting entire projects to the .mapx format. (We’ll be introducing support for direct QGIS to .aprx exports later this year.)

We’re so happy to finally provide an option for QGIS users to work alongside ArcGIS Pro users. This has long been a pain point for many organisations, and has even caused organisations to be ineligible to tender for jobs which they are otherwise fully qualified to do (when tenders require provision of data and maps in ArcGIS compatible formats).

ArcGIS Pro .stylx support

Alongside the other ArcGIS Pro documents, SLYR now has comprehensive support for reading and writing ArcGIS Pro .stylx databases. We’ve dedicated a ton of resources in ensuring that the conversion results (both from ArcGIS Pro to QGIS and from QGIS to ArcGIS Pro) are top-notch, and we even handle advanced ArcGIS Pro symbology options like symbol effects!

Take a look below how even very advanced ArcGIS Pro style libraries convert beautifully to QGIS symbol libraries:

ArcMap Improvements

While we’ve been focusing heavily on the newer ArcGIS Pro formats, we’ve also improved our support for the older ArcMap documents. In particular, SLYR now offers more options for converting ArcMap annotation layers and annotation classes to QGIS supported formats. Users can now convert Annotation layers and classes directly over to QGIS annotation layer or alternatively annotation classes can be converted over to the OGC standard GeoPackage format. When exporting annotation classes to GeoPackage the output database is automatically setup with default styling rules, so that the result can be opened directly in QGIS and will be immediately visualised to match the original annotation class.

Coming soon…

While all the above improvements are already available for all SLYR license holders, we’ve got many further improvements heading your way soon! For example, before the end of 2022 we’ll be releasing another large SLYR update which will introduce support for exporting QGIS projects directly to ArcGIS Pro .aprx documents. We’ve also got many enhancements planned which will further improve the quality of the converted documents. Keep an eye on this blog and our social media channels for more details as they are available…

You can read more about our SLYR tool at the product page, or contact us today to discuss licensing options for your organisation.

 

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Creating circular insets and other fun QGIS layout tricks

Thanks to the recent popularity of the “30 Day Map Challenge“, the month of November has become synonymous with beautiful maps and cartography. During this November we’ll be sharing a bunch of tips and tricks which utilise some advanced QGIS functionality to help create beautiful maps.

One technique which can dramatically improve the appearance of maps is to swap out rectangular inset maps for more organic shapes, such as circles or ovals.

Back in 2020, we had the opportunity to add support for directly creating circular insets in QGIS Print Layouts (thanks to sponsorship from the City of Canning, Australia!). While this functionality makes it easy to create non-rectangular inset maps the steps, many QGIS users may not be aware that this is possible, so we wanted to highlight this functionality for our first 30 Day Map Challenge post.

Let’s kick things off with an example map. We’ve shown below an extract from the 2032 Brisbane Olympic Bid that some of the North Road team helped create (on behalf of SMEC for EKS). This map is designed to highlight potential venues around South East Queensland and the travel options between these regions:

Venue Masterplan Brisbane 2032 Olympics
Venue Masterplan for 2032 Olympic Games, IOC Feasibility Assessment – Olympic Games, Brisbane February 2021

Circles featured heavily in previous Olympic bid maps (such as Budapest) where we took our inspiration from. This may, or may not, play a part in using the language of the target map audience – think Olympic rings!

Budapest Olympics 2024 MasterplanBudapest Olympics 2024 Masterplan

 

Step by Step Guide to Creating a Circle Inset

Firstly, prepare a print layout with both a main map and an inset map. Make sure that your inset map is large enough to cover your circular shape:

From the Print Layout toolbar, click on the Add Shape button and then select Add Ellipse:

Draw the ellipse over the middle of your inset map (hint: holding down Shift while drawing the ellipse will force it to a circular shape!). If you didn’t manage to create an exact circle then you can manually specify the width and height in the shape item’s properties. For this one, we went with a 50mm x 50mm circle:

Next, select the Inset Map item and in its Item Properties click on the Clipping Settings button:

In the Clipping Settings, scroll down to the second section and tick the Clip to Item box and select your Ellipse item from the list. (If you have labels shown in your inset map you may also want to check the “force labels inside clipping shape” option to force these labels inside the circle. If you don’t check this option then labels will be allowed to overflow outside of the circle shape.)

Your inset map will now be bound to the ellipse!

Here’s a bit more magic you could add to this map – in the Main Map’s properties, click on Overviews and set create one for the Inset map – it will nicely show the visible circular area and not the rectangle!

Bonus Points: Circular Title Text!

For advanced users, we’ve another fun tip…and when we say fun, we mean ‘let’s play with radians’! Here we’re going to create some title text and a wedged background which curves around the outside of our circular inset. This takes some fiddly playing around, but the end result can be visually striking! Here we’re going to push the QGIS print layout “HTML” item to create some advanced graphics, so some HTML and CSS coding experience is advantageous. (An alternative approach would be to use a vector illustration application like Inkscape, and add your title and circular background as an SVG item in the print layout).

We’ll start by creating some curved circular text:

First, add a “HTML frame” to your print layout:

HTML frames allow placement of dynamic content in your layouts, which can use HTML, CSS and JavaScript to create graphical components.

In the HTML item’s “source” box, add the following code:

<svg height="300" width="350">
        <defs>
            <clipPath id="circleView">
                <circle id="curve" cx="183" cy="156" r="25" fill="transparent" />
            </clipPath>
        </defs>
        <path id="forText" d="M 28,150, C 25,50, 180,-32,290,130" stroke="" fill="none"/>
            <text x="0" y="35" width="100">
                <textpath xlink:href="#forText">
                    <tspan font-weight="bold" fill="black">Place text here</tspan>
                </textpath>
            </text>
             <style>
    <![CDATA[
      text{
        dominant-baseline: hanging;
        font: 20px Arial;
      }
    ]]>
  </style>
</svg>

Now, let’s add in a background to bring more focus onto the title!

To add in the background, create another HTML item. We’ll again create the arc shape using an SVG element, so add the following code into the item’s source box:

<svg width="750" height="750" xmlns="http://www.w3.org/2000/svg">
  <path d="M 90 70
           A 56 56, 0, 0, 0, 133 140
           L 150 90 Z" fill="#414042" transform=" scale(2.1) rotate(68 150 150) " />/>
</svg>

(You can read more about SVG  curves and arcs paths over at MDN)

So there we go! These two techniques can help push your QGIS map creations further and make it easier to create beautiful cartography directly in QGIS itself. If you found these tips useful, keep an eye on this blog as we post more tips and tricks over the month of November. And don’t forget to follow the 30 day Map Challenge for a smorgasbord of absolutely stunning maps.

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Waste Sampling in the Digital Era - Case of the Czech Republic

Mergin Maps and QGIS used for municipal waste composition survey in the Czech Republic.

Global Environmental Threat of Municipal Waste

The dumping of municipal waste is a global threat to our environment and all life forms.

Currently, there is a distinct trend of less landfilling, as countries move steadily towards alternative ways of recycling and incineration, where material use is not possible.

Dr Martin Pavlas, Associate Professor at the Institute of Process Engineering in the Faculty of Mechanical Engineering at Brno University of Technology in the Czech Republic, is doing important research as part of an EU project regarding municipal waste sampling.

Photo of bins, M. Pavlas

Bins to be sampled (Photo: M. Pavlas)

With the aid of Mergin Maps and QGIS, he is carrying out an extensive municipal waste composition survey in the Czech Republic. Together with Peter Petrik of Lutra Consulting, a unique GIS-based tool was developed for the waste sampling. This includes a prototype mobile application based on Mergin Maps for waste sampling in the field.

Read the full article on merginmaps.com

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FOSS4G 2022 Florence

FOSS4G is the annual global event of free and open source geographic technologies and open geospatial data hosted by OSGeo. In 2022 it took place in Firenze with over 1300 participants, 402 talks and 44 workshops.

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Mergin Maps in MapScaping podcast

We talked about Mergin Maps in the MapScaping podcast: QGIS Offline And In The Field

Peter Petrik was a guest in the episode of QGIS Offline And In The Field. He talked with Daniel O’Donohue about collection of spatial data in the field.

Mergin Maps is a field data collection app based on QGIS. It makes field work easy with its simple interface and cloud-based sync. Available on Android, iOS and Windows. Screenshots of the Mergin Maps Input App for Field Data Collection
Get it on Google Play Get it on Apple store

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Detailed hillshading anywhere in the world!

New version of MapTiler QGIS Plugin 3.0 with detailed global terrain, contour lines, hillshading, and maps using these terrain data for outdoor activities.
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Point cloud and QGIS 3D improvements - progress report 3

This is a part of series of blog posts to update QGIS community with the outcome of the funding we had raised during late 2021 to improve elevation and point clouds in collaboration with North Road and Hobu. For other updates see part 1 and part 2.

Profile tool

With the new integrated profile tool, you can generate cross sections of point clouds, raster, vector and mesh data. For more information on this tool, you can see the excellent video introduction by North Road who implemented this part of the project.

To be able to view profiles from different data types, there is now a dedicated Elevation settings under layer properties. Users can set the elevation source, style and some other configurations. You can then enable elevation profile widget window by going to the main menu in QGIS, View > Elevation Profile.

Elevation Profile tool in QGIS

Support for COPC

Cloud Optimized Point Cloud (COPC) is a new format for point cloud data and QGIS 3.26 comes with support for it (for both local files and data hosted on remote servers).

COPC is a very exciting addition to the ecosystem, because it is “just” a LAZ file (a format well established in the industry) that brings some interesting extra features. This means all software supporting LAZ file format will also be able to read COPC files without any extra development. If you are familiar with Cloud Optimized GeoTIFF (COG) for rasters, COPC is an extension of the same concept for point cloud data. Read more at https://copc.io/

Ordinary LAS/LAZ files have an issue that it is not possible to efficiently read a subset of data without reading the entire file. This is less of an issue when processing point cloud data, but much more important for point cloud viewers, which typically show only a small portion of the data (e.g. zoomed in to a particular object or zoomed out to show the entire dataset). For that reason, viewers need to index (pre-process) the data before being able to show it - QGIS also needs to do the indexing when a point cloud file is first loaded. The new feature that COPC brings is that data is re-organized in a way that reading just some parts of data is efficient and easy. Therefore when loading COPC files, QGIS can immediately show them without any indexing (that takes time and extra storage).

In addition to that, COPC files can be efficiently used also directly from remote servers - clients such as QGIS can only request small portions of data needed, without the need to download the entire file (that can have size of many gigabytes). This makes dissemination of point cloud data easier than before - just make COPC files available through a static server and clients are ready to stream the data.

A small note: until now, QGIS indexed point cloud files to EPT format upon first load. From QGIS 3.26 we have switched to indexing to COPC - it has the advantage of being just a single file rather than lots of small files in a directory. If you have point cloud data indexed in EPT format already, QGIS will keep using EPT index (rather than indexing also to COPC).

Display of a remote COPC file

Display of a remote COPC file

Classified renderer improvements

Classified renderer for point clouds has been improved to:

  • Show only classes that are in the dataset (instead of hard-coded list) & show also non-standard classes
  • Show percentage of points for each class
  • Work also for other attributes (return number, number of returns, point source and few other classes)

Point cloud classification

Vector transparency in 3D scene

This improvement is not part of the crowdfunding campaign and was exclusively funded by the Swedish QGIS user group, but it is somehow relevant to the audience of this blog post!

With this feature, you can set polygon transparency in 3D scenes.

3D vector transparency

Want to see more features?

We are trying to improve QGIS to handle point clouds for visualisation and analysis. If you would like certain features to be added to QGIS, do not hesitate to contact us on info@lutraconsulting.co.uk with your idea(s).

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