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Tag: qgis

LiDAR HD from IGN: download and open in QGIS

The classified LiDAR HD cloud covered 78.4% of France on 6 September 2026, 30,933 of 34,877 communes. Map per commune, products, clicks in QGIS.
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Photogrammetry vs LiDAR: Which One for Which Job

Photogrammetry rebuilds a surface from overlapping photos. LiDAR measures it with a laser. One gives colour and a cheap flight, the other sees under the trees.
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(Fr) [Témoignage] Jérémie ORY, responsable du Pôle SIG au Département du Calvados

Sorry, this entry is only available in French.

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Why QGIS will not open your DWG, and three ways around it

You used Project -> Import/Export -> Import Layers from DWG/DXF and either got "Drawing import failed (unsupported version)", or waited two minutes for zero layers. Nothing is wrong with the drawing or with the settings. QGIS opens DWG through libdxfrw, which understands DWG up to the AutoCAD 2000 format. Drawings saved as 2004, 2007, 2010, 2013 or 2018 do not open, and most drawings handed over today are 2013 or 2018. This is known upstream (qgis/QGIS#48637, open since 2022); in a sample of 44 public drawings we ran through QGIS, none opened. Even when a file does import, text placement and hatch patterns are commonly lost. The post then compares the three ways around it, with what each one actually costs: 1. Save as DXF from the CAD you already use. Free, but one file at a time, and the resulting DXF arrives as one layer per geometry type rather than per CAD layer. 2. ODA File Converter, which the free DWG plugins in the QGIS repository ask you to install. Whole folders at a time, but its licence restricts commercial use for non-members and it is awkward to get onto an offline machine. 3. A plugin that opens DWG directly inside QGIS, which is what EchoCad Pro does; the free edition covers the DXF side of options 1 and 2, including per-CAD-layer output, colours, line types, hatches and text.
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FOSS4G Global Comes to Japan: Hiroshima 2026 - QGIS LAB by MIERUNE

Introduction FOSS4G conferences are held in countries and regions around the world. This time, FOSS4G Global, which takes place once a year, was held in Japan for the first time. This article reports ...
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Multispectral vs Hyperspectral: Bands, Cost and Free Data

Multispectral records 4 to 13 wide bands, hyperspectral 100 to 300 narrow ones. A table of bands, free satellites, drone sensor cost and data size.
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Cartes.gouv.fr : on ne remplace pas un portail, on sort d'un modèle

Cartes.gouv.fr : retour d’expérience sur la transformation du Géoportail en plateforme ouverte de données, services et cartes du territoire.
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Read QGIS LAB Articles Without Leaving QGIS - QGIS LAB by MIERUNE

Introduction If you are reading this, you may often follow QGIS LAB articles while working in QGIS. Have you ever thought, “I wish I could do everything in QGIS”? For readers like you, there is now a ...
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QGIS Session Report: FOSS4G Hiroshima 2026 - QGIS LAB by MIERUNE

Introduction FOSS4G Hiroshima 2026 is an international conference that brings together people from around the world who work with open source geospatial software (FOSS4G). It was held in Hiroshima Pre...
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Plot Plan vs Site Plan: What 19 Permit Offices Ask For

A plot plan draws one lot, a site plan the whole project. We read 19 US permit checklists: the name on the form says little about what the drawing holds.
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