QGIS Planet

QGISでレイヤ同士の重複箇所と属性情報を抽出!インターセクト処理の実践的活用法 - QGIS LAB by MIERUNE

はじめにGISにおけるデータ分析では、異なるレイヤー同士で重なっている部分だけを抽出したい場面がよくあります。例えば、「メッシュごとに交差する森林地域の面積を計算したい」「市町村エリアごとに交差する河川の長さを求めたい」といったケースです。こうした“重なり(交差)部分”を抽出する際に使うのが、空間演算の「交差(インターセクト)」処理です。 この記事では、QGISにおけるインターセクト処理について、...
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[Blog] Support tip - using conditions to improve your Mergin Maps survey

Boost data accuracy and survey usability. Learn to use QGIS expressions in Mergin Maps to create dynamic forms that hide unnecessary fields and restrict feature editing to assigned teams.
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ArcMap is Dead: Great Time to Switch to QGIS

ArcMap is dead. Avoid costly ArcGIS Pro vendor lock-in by migrating to QGIS (LTR 3.44). Learn the 5 essential steps for a smooth transition, including MXD conversion.
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QField 4.1 "Barents Sea": Dive into the third dimension and coordinate geometry operations!

QField’s first release of the year comes packed with new features as well as a bundle of improvements and polishing. Let’s jump right into it.

Main highlights

3D

This new version of QField comes with a shiny 3D map view, giving users the ability to render their map content on top of a three-dimensional terrain.

Users can rotate the terrain geometry to get a better understanding of elevation profiles, while also adjusting the plane’s extent by panning and zooming with drag and pinch gestures. When the GNSS positioning service is enabled, the user’s current position, as well as ongoing tracking sessions, will be overlaid on top of the 3D terrain geometry.

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By default, QField relies on Mapzen Global Terrain tiles to determine terrain elevation. As its name indicates, this is a 30-meter digital elevation model covering the globe and hosted online, which allows QField to render 3D views without any user configuration. But it does not stop there. QField supports additional elevation sources, such as disk-based GeoTIFFs, to work in offline areas. This can be configured when setting up a project by changing the terrain type in QGIS.

COGO operations

Moving on to the next major functionality introduced in this new version: a COGO (Coordinate Geometry) framework to support fieldwork through a set of parameter-driven operations to generate vertices. This has been one of the most requested features by professional land surveyors, so we couldn’t be more excited to deliver it and hear back from our community.

QField 4.1 ships with three COGO tools:

  • The XYZ parameters operation generates vertices based on a manually entered pair of X and Y coordinates as well as an optional Z value;
  • The distance/angle from point operation generates vertices based on distance and angle values from a given point; and
  • The circles’ intersection operation generates vertices at the intersection of two circles, each defined by a point and a radius.

Leveraging QField’s capabilities, a COGO operation’s point parameter can be defined in multiple ways: users can enter values manually or automatically fill in the parameter using either the current GNSS position, the geometry of a pre-existing feature within a point layer, or the coordinate cursor’s location. The latter is super useful when coupled with project snapping.

There’s more

Beyond these two flagship features, this new version contains tons of improvements.

We’re happy to report that the background tracking functionality introduced for Android last year is now available on iOS. Users can now save battery by locking their phone while QField continues to track positions. Upon reopening QField, the collected positions will be written into your project. No Apple will be left behind.

The feature form continued to receive improvements during this development cycle. Starting with this version, Remember Last Value pins are hidden by default. Moving away from an always-shown interface, remember last value pin visibility can now be configured per field. Using the latest QGIS (4.0 and above), users can configure the presence of the pin and whether remembrance should be active by default in the vector layer properties’ attribute form panel.

Position tracking has received a lot of attention during this development cycle focused on optimizations. Tracking is now friendlier to your device battery while user interface responsiveness has been improved when tracking sessions are ongoing. We’ve also spent some time making Bluetooth connections to external GNSS devices even more reliable. If this was an issue for you in the past, give this version a try again.

Finally, something to please our advanced users: QField now offers the ability to tunnel network traffic through a proxy that can be enabled and configured in the settings panel.

‘Barents Sea’ release name

The Barents Sea, a marginal sea of the Arctic Ocean bordered by Norway and Russia, is one of the most ecologically and geopolitically significant water bodies on the planet. Home to some of the world’s largest cod and haddock fisheries, it sustains both marine ecosystems and the livelihoods of coastal communities across the high north. Its waters are a barometer for our changing climate: the Barents Sea is the fastest-warming part of the Arctic, making it a critical area of scientific observation and environmental monitoring. The Nansen Legacy project has been tracking these changes closely (factsheet).

Sea ice in the Barents Sea
Sea ice in the Barents Sea, Peter Prokosch https://www.grida.no/resources/3636

At OPENGIS.ch, we see the Barents Sea as a powerful symbol of why field data collection matters. Understanding and protecting remote, extreme environments like the Arctic requires tools that are reliable, offline-capable, and built for real-world conditions. That is precisely what QField is designed to deliver.

With QField 4.1 ‘Barents Sea’, we continue building on that mission, bringing new capabilities to field workers, researchers, and environmental stewards wherever their work takes them.

Happy field mapping!

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GOSATプラグインを使って、温室効果ガスのデータをQGISで可視化しよう【前編】 - QGIS LAB by MIERUNE

はじめにGOSATプラグインは、温室効果ガス観測衛星GOSAT(いぶき)シリーズのデータをQGIS上で可視化・簡易解析できるプラグインです。Tellusで提供されているデータセットの検索からダウンロード、時系列でのアニメーション表示や任意地点の数値のグラフ化など、データを様々な形で可視化することができます。本記事では、GOSATプラグインのインストールから基本的な設定までを解説し、次回の後編では実...
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Expérimentations avec le plugin Cornelis

Découverte et expérimentations avec le plugin Cornelis, pour mimer la lithographie façon Maurits Cornelis Escher.
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Etichette miste con tag HTML in QGIS

Etichette miste con tag HTML in QGIS

Introduzione

A partire da QGIS 3.28 Firenze, grazie al finanziamento del gruppo degli utenti svizzeri e all'implementazione di Nyall Dawson (North Road), è possibile creare etichette miste direttamente tramite espressioni usando tag HTML e CSS inline.

Questo apre nuove possibilità: cambiare carattere, stile, colore e dimensione del testo all'interno della stessa etichetta, senza dover ricorrere a layer multipli o soluzioni alternative.

!!! Abstract "Etichette miste con tag HTML" Usando i tag HTML nelle espressioni del field calculator o nelle etichette di QGIS è possibile mescolare stili diversi in una singola etichetta.

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QGIS 4.0新機能 〜QGIS 4シリーズ最初のバージョン〜 - QGIS LAB by MIERUNE

はじめに2026年3月6日に、QGIS 4.0「Norrköping」がリリースされました。QGIS 4.0シリーズとしては最初のリリースとなります。最大の注目点は Qt6 フレームワークへの移行ですが、そのほかにも100件以上の更新が含まれています。下記の記事では、QGIS 4.0へのアップデートのポイントや移行時の注意点などについて解説しているので、併せてご覧ください。この記事では、バージョン...
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QGISで作った地図をWebに公開しよう〜Kumoyで地図を共有する方法〜 - QGIS LAB by MIERUNE

はじめにQGISで作成した地図を、そのままWebで公開したいと考えたことはないでしょうか。 この記事では、「Kumoy」というサービスを利用して、QGISの地図をWeb地図として無料で公開する方法をご紹介します。Kumoyは、2026年3月現在ベータ版として提供されています。KumoyとはKumoy(くもい)は、QGISとWebのシームレスな連携を実現する、QGIS向けのクラウドサービスです。QG...
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