﻿{"id":13974,"date":"2025-06-13T10:00:00","date_gmt":"2025-06-13T08:00:00","guid":{"rendered":"https:\/\/www.sigterritoires.fr\/?p=13974"},"modified":"2025-06-10T22:02:15","modified_gmt":"2025-06-10T20:02:15","slug":"qgis-y-geoparquet","status":"publish","type":"post","link":"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/","title":{"rendered":"QGis y geoparquet"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Contenu <\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Historia_do_Parquet_e_do_GeoParquet\" >Hist\u00f3ria do Parquet e do GeoParquet<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#1_Apache_Parquet_%E2%80%93_El_formato_original\" >1. Apache Parquet &#8211; El formato original<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Historia\" >Historia:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Objetivo\" >Objetivo:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#GeoParquet_%E2%80%93_Extension_geoespacial_de_Parquet\" >GeoParquet &#8211; Extensi\u00f3n geoespacial de Parquet<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Historia-2\" >Historia :<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Objetivo-2\" >Objetivo:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Caracteristiques_de_GeoParquet\" >Caract\u00e9ristiques de GeoParquet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Specifications_techniques_GeoParquet\" >Sp\u00e9cifications techniques (GeoParquet)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Pourquoi_GeoParquet_est_important\" >Pourquoi GeoParquet est important ?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Description_technique_du_format_GeoParquet\" >Description technique du format GeoParquet<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#1_Base_technique_Apache_Parquet\" >1. Base technique : Apache Parquet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Resume\" >R\u00e9sum\u00e9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#2_Extension_GeoParquet\" >2. Extension GeoParquet<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#a_Structure_de_fichier\" >a. Structure de fichier<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#b_Exemple_de_metadonnees_GeoParquet\" >b. Exemple de m\u00e9tadonn\u00e9es GeoParquet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#c_Champs_techniques_importants\" >c. Champs techniques importants<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#3_Elements_internes_Parquet\" >3. \u00c9l\u00e9ments internes (Parquet)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#4_Specification_complete\" >4. Sp\u00e9cification compl\u00e8te<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Travailler_avec_GeoParquet_dans_QGIS\" >Travailler avec GeoParquet dans QGIS<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#1_Conditions_pour_lutiliser_dans_QGIS\" >1. Conditions pour l\u2019utiliser dans QGIS<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Versions_necessaires\" >Versions n\u00e9cessaires :<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#2_Ouvrir_un_fichier_GeoParquet_dans_QGIS\" >2. Ouvrir un fichier GeoParquet dans QGIS<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Methode_1_Glisser-deposer\" >M\u00e9thode 1 : Glisser-d\u00e9poser<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Methode_2_Ajouter_une_couche_vectorielle\" >M\u00e9thode 2 : Ajouter une couche vectorielle<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#3_Creer_un_GeoParquet_depuis_QGIS\" >3. Cr\u00e9er un GeoParquet depuis QGIS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/qgis-y-geoparquet\/#Bonnes_pratiques\" >Bonnes pratiques<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Historia_do_Parquet_e_do_GeoParquet\"><\/span>Hist\u00f3ria do Parquet e do GeoParquet<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Apache_Parquet_%E2%80%93_El_formato_original\"><\/span>1. Apache Parquet &#8211; El formato original<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Historia\"><\/span>Historia:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>2013: Creado por Twitter y Cloudera.<\/li>\n\n\n\n<li>2014: Donado a la Apache Software Foundation.<\/li>\n\n\n\n<li>Dise\u00f1ado como un formato columnar optimizado para una lectura r\u00e1pida y una compresi\u00f3n eficiente.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Objetivo\"><\/span>Objetivo:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Almacenamiento eficiente de datos tabulares masivos, especialmente en ecosistemas Big Data (Hadoop, Spark&#8230;).<\/li>\n\n\n\n<li>Soporta tipos complejos, esquemas, particiones, compresi\u00f3n, etc.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"GeoParquet_%E2%80%93_Extension_geoespacial_de_Parquet\"><\/span><strong> <\/strong>GeoParquet &#8211; Extensi\u00f3n geoespacial de Parquet <span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Historia-2\"><\/span>Historia :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A\u00f1o Evento 2021 (abril) Primeros intercambios en GitHub y en comunidades de c\u00f3digo abierto para extender Parquet a datos geoespaciales.2021 (agosto ) Inicio del proyecto GeoParquet en GitHub (github.com\/opengeospatial\/geoparquet).2022 (marzo) Publicaci\u00f3n de un borrador de especificaci\u00f3n v0.1.0, que admite una \u00fanica columna geom\u00e9trica por archivo .2023 (Enero) Publicaci\u00f3n de la versi\u00f3n v1.0.0 RC (Release Candidate).2023 (Noviembre) Adopci\u00f3n por el OGC (Open Geospatial Consortium) como Community Standard.2024: Adopci\u00f3n por las principales herramientas: GDAL, DuckDB, GeoPandas, QGIS, PostGIS (para lectura), etc.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>A\u00f1o <\/strong><\/td><td><strong>Evento <\/strong><\/td><\/tr><tr><td><strong>2021 (abril)<\/strong><\/td><td>rimeros intercambios en GitHub y en comunidades de c\u00f3digo abierto para extender Parquet a datos geoespaciales<\/td><\/tr><tr><td><strong>2021 (agosto)<\/strong><\/td><td>Inicio del proyecto GeoParquet en <a href=\"https:\/\/github.com\/opengeospatial\/geoparquet\">GitHub (github.com\/opengeospatial\/geoparquet)<\/a>.<\/td><\/tr><tr><td><strong>2022 (marzo)<\/strong><\/td><td>Publicaci\u00f3n de un borrador de especificaci\u00f3n v0.1.0, que admite una \u00fanica columna geom\u00e9trica por archivo.<\/td><\/tr><tr><td><strong>2023 (enero)<\/strong><\/td><td>Publicaci\u00f3n de la versi\u00f3n v1.0.0 RC (Release Candidate).<\/td><\/tr><tr><td><strong>2023 (noviembre)<\/strong><\/td><td>Adopci\u00f3n por el OGC (Open Geospatial Consortium) como Community Standard<\/td><\/tr><tr><td><strong>2024 : <\/strong><\/td><td><strong>Adopci\u00f3n por las principales herramientas: GDAL, DuckDB, GeoPandas, QGIS, <\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Objetivo-2\"><\/span>Objetivo:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ofrecer un formato geoespacial de alto rendimiento para flujos de datos modernos, basado en el \u00e9xito de Parquet.<\/li>\n\n\n\n<li>Compatible con el ecosistema Cloud \/ Data Lake.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Caracteristiques_de_GeoParquet\"><\/span><strong>Caract\u00e9ristiques de GeoParquet<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Caract\u00e9ristique<\/strong><\/td><td><strong>D\u00e9tail<\/strong><\/td><\/tr><tr><td><strong> Base<\/strong><\/td><td>Apache Parquet<\/td><\/tr><tr><td><strong> G\u00e9om\u00e9tries<\/strong><\/td><td>Stock\u00e9es dans une ou plusieurs colonnes, encod\u00e9es en <strong>WKB<\/strong><\/td><\/tr><tr><td><strong> CRS<\/strong><\/td><td>Encod\u00e9 dans les m\u00e9tadonn\u00e9es JSON<\/td><\/tr><tr><td><strong> M\u00e9tadonn\u00e9es<\/strong><\/td><td>JSON enrichi dans la section geo<\/td><\/tr><tr><td><strong> Compression<\/strong><\/td><td>Inh\u00e9rente \u00e0 Parquet (Snappy, Zstd\u2026)<\/td><\/tr><tr><td><strong> Outils support<\/strong><\/td><td>GDAL \u2265 3.6, PyArrow, GeoPandas, DuckDB, QGIS \u2265 3.32<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Specifications_techniques_GeoParquet\"><\/span><strong>Sp\u00e9cifications techniques (GeoParquet)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fichier Parquet avec des <strong>colonnes g\u00e9om\u00e9triques<\/strong>,<\/li>\n\n\n\n<li>M\u00e9tadonn\u00e9es dans l\u2019attribut geo au format JSON (voir exemple ci-dessous),<\/li>\n\n\n\n<li>Exemple :<\/li>\n<\/ul>\n\n\n<div class='stb-container stb-style-download stb-caption-box'><div class='stb-caption'><div class='stb-logo'><img class='stb-logo__image' src='data:image\/png;base64,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' alt='img'\/><\/div><div class='stb-caption-content'> <\/div><div class='stb-tool'><\/div><\/div><div class='stb-content'><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{\n&nbsp; \"version\": \"1.0.0\",\n&nbsp; \"primary_column\": \"geometry\",\n&nbsp; \"columns\": {\n&nbsp;&nbsp;&nbsp; \"geometry\": {\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"encoding\": \"WKB\",\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"geometry_type\": \"Point\",\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"crs\": \"<a href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/epsg-4326-vs-3857-3\/\">EPSG:4326<\/a>\",\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"edges\": \"planar\",\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"orientation\": \"counterclockwise\",\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"bbox\": &#091;-180, -90, 180, 90]\n&nbsp;&nbsp;&nbsp; }\n&nbsp; }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Pourquoi_GeoParquet_est_important\"><\/span>Pourquoi GeoParquet est important ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">GeoParquet est un format cl\u00e9 \u00e0 l\u2019intersection du <strong>g\u00e9ospatial<\/strong> et du <strong>Big Data<\/strong>. Il repose sur le format Parquet, largement utilis\u00e9 dans les environnements analytiques modernes, tout en y ajoutant une s\u00e9mantique g\u00e9ographique. Cette combinaison lui conf\u00e8re plusieurs avantages :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Compatibilit\u00e9 Big Data + G\u00e9ospatial<\/strong> : GeoParquet permet de manipuler efficacement des volumes massifs de donn\u00e9es spatiales dans des environnements distribu\u00e9s ou cloud, tout en conservant la richesse des attributs g\u00e9ographiques.<\/li>\n\n\n\n<li><strong>Adapt\u00e9 aux donn\u00e9es massives<\/strong> : Il est particuli\u00e8rement bien adapt\u00e9 au stockage et au traitement de grands jeux de donn\u00e9es tels que les plans cadastraux, les donn\u00e9es OpenStreetMap, ou les catalogues d\u2019images satellitaires.<\/li>\n\n\n\n<li><strong>Int\u00e9gration aux outils modernes<\/strong> : Le format s\u2019int\u00e8gre nativement dans des outils r\u00e9cents et performants comme DuckDB, Dask, ou Arrow Flight, facilitant l\u2019analyse rapide, le streaming ou la visualisation.<\/li>\n\n\n\n<li><strong>Interop\u00e9rabilit\u00e9<\/strong> : GeoParquet est pris en charge par des biblioth\u00e8ques Python courantes (GeoPandas, PyArrow, etc.), ainsi que par des logiciels SIG comme QGIS ou GeoServer, gr\u00e2ce au support assur\u00e9 par GDAL.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">En r\u00e9sum\u00e9, GeoParquet offre une solution moderne, portable et performante pour manipuler des donn\u00e9es g\u00e9ographiques dans des \u00e9cosyst\u00e8mes \u00e0 la fois SIG et Big Data.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Description_technique_du_format_GeoParquet\"><\/span>D<strong>escription technique du format GeoParquet<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Base_technique_Apache_Parquet\"><\/span><strong>1. Base technique : Apache Parquet<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>GeoParquet<\/strong> est une extension du format <strong>Parquet<\/strong>, un format <strong>colonnaire binaire<\/strong> optimis\u00e9 pour :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>la <strong>lecture rapide<\/strong> de grandes quantit\u00e9s de donn\u00e9es,<\/li>\n\n\n\n<li>la <strong>compression efficace<\/strong>,<\/li>\n\n\n\n<li>et le <strong>traitement parall\u00e8le<\/strong> (big data \/ cloud).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Parquet repose sur :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>un <strong>sch\u00e9ma<\/strong> (type, nom, hi\u00e9rarchie des champs),<\/li>\n\n\n\n<li>un <strong>stockage par colonnes<\/strong>, non par lignes,<\/li>\n\n\n\n<li>une structure en <strong>row groups<\/strong>, <strong>pages<\/strong> et <strong>encodages<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Parquet est agnostique aux types m\u00e9tiers (ex : il n&rsquo;a pas de type \u00ab\u00a0g\u00e9om\u00e9trie\u00a0\u00bb).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cela veut dire que <strong>le format Parquet ne conna\u00eet pas<\/strong> \u2014 <strong>et ne comprend pas nativement<\/strong> \u2014 les types de donn\u00e9es \u00ab sp\u00e9cialis\u00e9s \u00bb d&rsquo;un domaine particulier (<strong>type m\u00e9tier<\/strong>), comme :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>les g\u00e9om\u00e9tries (ex : points, polygones),<\/li>\n\n\n\n<li>les dates complexes (calendriers lunaires, etc.),<\/li>\n\n\n\n<li>les unit\u00e9s de mesure sp\u00e9cifiques (ex : altitudes en pieds),<\/li>\n\n\n\n<li>les objets 3D ou spatiaux.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Parquet ne g\u00e8re que des types g\u00e9n\u00e9raux et simples :<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Type Parquet<\/strong><\/td><td><strong>Signification<\/strong><\/td><\/tr><tr><td><strong>INT32<\/strong><strong>, <\/strong><strong>INT64<\/strong><strong><\/strong><\/td><td>Entiers<\/td><\/tr><tr><td><strong>FLOAT<\/strong><strong>, <\/strong><strong>DOUBLE<\/strong><strong><\/strong><\/td><td>D\u00e9cimaux<\/td><\/tr><tr><td><strong>BYTE_ARRAY<\/strong><strong><\/strong><\/td><td>Cha\u00eenes ou donn\u00e9es binaires<\/td><\/tr><tr><td><strong>BOOLEAN<\/strong><strong><\/strong><\/td><td>Vrai\/Faux<\/td><\/tr><tr><td><strong>TIMESTAMP<\/strong><strong><\/strong><\/td><td>Date\/heure (mais g\u00e9n\u00e9rique)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Donc <strong>Parquet ne sait pas ce qu\u2019est un \u00ab\u00a0POINT\u00a0\u00bb ou un \u00ab\u00a0POLYGON\u00a0\u00bb<\/strong>. Il ne fait que stocker <strong>une s\u00e9rie d\u2019octets<\/strong> (par exemple : une g\u00e9om\u00e9trie encod\u00e9e en <strong>WKB<\/strong>) comme une cha\u00eene binaire (BYTE_ARRAY).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Exemple concret : fichier GeoParquet<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Imaginons une colonne \u00ab\u00a0geometry\u00a0\u00bb contenant des polygones.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Dans Parquet<\/strong> : cette colonne est vue comme une suite de <strong>blobs binaires<\/strong> (byte arrays).<\/li>\n\n\n\n<li><strong>Dans GeoParquet<\/strong> : une m\u00e9tadonn\u00e9e JSON dit : \u00ab cette colonne contient du WKB repr\u00e9sentant des <strong>polygones EPSG:4326<\/strong> \u00bb.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Parquet seul ne comprend <strong>pas<\/strong> ce que c\u2019est. Seule une <strong>application qui lit la m\u00e9tadonn\u00e9e <\/strong><strong>geo<\/strong> peut interpr\u00e9ter correctement les donn\u00e9es (ex : QGIS, GDAL, GeoPandas).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Resume\"><\/span><strong> R\u00e9sum\u00e9<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>\u00c9l\u00e9ment<\/strong><\/td><td><strong>D\u00e9tail<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Parquet<\/td><td>Stocke des colonnes dans un format tr\u00e8s g\u00e9n\u00e9rique<\/td><\/tr><tr><td>Type m\u00e9tier (g\u00e9om\u00e9trie)<\/td><td>Absent du standard Parquet<\/td><\/tr><tr><td>Solution<\/td><td>GeoParquet ajoute une <strong>m\u00e9tadonn\u00e9e d\u00e9crivant les g\u00e9om\u00e9tries<\/strong><\/td><\/tr><tr><td>Cons\u00e9quence<\/td><td>Sans cette extension, un outil ne saurait pas que c&rsquo;est une carte<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Extension_GeoParquet\"><\/span><strong>2. Extension GeoParquet<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"a_Structure_de_fichier\"><\/span><strong>a. Structure de fichier<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">GeoParquet est un <strong>fichier .parquet<\/strong>, mais contenant :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>des <strong>colonnes g\u00e9om\u00e9triques<\/strong> encod\u00e9es en <strong>WKB<\/strong> (Well-Known Binary),<\/li>\n\n\n\n<li>des <strong>m\u00e9tadonn\u00e9es JSON<\/strong> embarqu\u00e9es dans la cl\u00e9 geo du fichier Parquet.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ces m\u00e9tadonn\u00e9es d\u00e9crivent :<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>\u00c9l\u00e9ment<\/strong><\/td><td><strong>R\u00f4le<\/strong><\/td><\/tr><\/thead><tbody><tr><td>version<\/td><td>Version de la spec GeoParquet (ex: \u00ab\u00a01.0.0\u00a0\u00bb)<\/td><\/tr><tr><td>primary_column<\/td><td>Nom de la colonne g\u00e9om\u00e9trique principale<\/td><\/tr><tr><td>columns<\/td><td>Objet d\u00e9crivant chaque colonne g\u00e9om\u00e9trique<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"b_Exemple_de_metadonnees_GeoParquet\"><\/span><strong>b. Exemple de m\u00e9tadonn\u00e9es GeoParquet<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<div class='stb-container stb-style-download stb-caption-box'><div class='stb-caption'><div class='stb-logo'><img class='stb-logo__image' 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' alt='img'\/><\/div><div class='stb-caption-content'> <\/div><div class='stb-tool'><\/div><\/div><div class='stb-content'><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{\n&nbsp; \"geo\": {\n&nbsp;&nbsp;&nbsp; \"version\": \"1.0.0\",\n&nbsp;&nbsp;&nbsp; \"primary_column\": \"geometry\",\n&nbsp;&nbsp;&nbsp; \"columns\": {\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"geometry\": {\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"encoding\": \"WKB\",\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"geometry_type\": \"Polygon\",\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"crs\": \"EPSG:4326\",\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"edges\": \"planar\",\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"orientation\": \"counterclockwise\",\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \"bbox\": &#091;102.0, 0.5, 103.0, 1.5]\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }\n&nbsp;&nbsp;&nbsp; }\n&nbsp; }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"c_Champs_techniques_importants\"><\/span><strong>c. Champs techniques importants<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Champ<\/strong><\/td><td><strong>Description<\/strong><\/td><\/tr><tr><td><strong>encoding<\/strong><strong><\/strong><\/td><td>\u00ab\u00a0WKB\u00a0\u00bb ou \u00ab\u00a0WKT\u00a0\u00bb (WKB est recommand\u00e9)<\/td><\/tr><tr><td><strong>geometry_type<\/strong><strong><\/strong><\/td><td>Type OGC : \u00ab\u00a0Point\u00a0\u00bb, \u00ab\u00a0Polygon\u00a0\u00bb, \u00ab\u00a0MultiPolygon\u00a0\u00bb, etc.<\/td><\/tr><tr><td><strong>crs<\/strong><strong><\/strong><\/td><td>R\u00e9f\u00e9rence spatiale, ex. \u00ab\u00a0EPSG:4326\u00a0\u00bb ou WKT complet<\/td><\/tr><tr><td><strong>bbox<\/strong><strong><\/strong><\/td><td>Borne minimale [xmin, ymin, xmax, ymax]<\/td><\/tr><tr><td><strong>edges<\/strong><strong><\/strong><\/td><td>\u00ab\u00a0planar\u00a0\u00bb (default) ou \u00ab\u00a0spherical\u00a0\u00bb<\/td><\/tr><tr><td><strong>orientation<\/strong><strong><\/strong><\/td><td>\u00ab\u00a0counterclockwise\u00a0\u00bb ou \u00ab\u00a0clockwise\u00a0\u00bb pour les polygones<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Elements_internes_Parquet\"><\/span><strong>3. \u00c9l\u00e9ments internes (Parquet)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Row groups<\/strong> : unit\u00e9s de traitement contenant un ensemble de lignes,<\/li>\n\n\n\n<li><strong>Pages<\/strong> : segments internes compress\u00e9s pour chaque colonne,<\/li>\n\n\n\n<li><strong>Encodage<\/strong> : PLAIN, DICTIONARY, DELTA, etc.,<\/li>\n\n\n\n<li><strong>Compression<\/strong> : Snappy (par d\u00e9faut), GZIP, Zstd&#8230;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Chaque colonne, y compris g\u00e9om\u00e9trique, est stock\u00e9e de mani\u00e8re <strong>s\u00e9par\u00e9e<\/strong>, ce qui rend l&rsquo;acc\u00e8s <strong>s\u00e9lectif<\/strong> tr\u00e8s performant.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Specification_complete\"><\/span><strong>4. Sp\u00e9cification compl\u00e8te<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Disponible ici :<br> <a href=\"https:\/\/github.com\/opengeospatial\/geoparquet\">https:\/\/github.com\/opengeospatial\/geoparquet<\/a><br> <a href=\"https:\/\/github.com\/opengeospatial\/geoparquet\/blob\/main\/spec\/geoparquet.md\">Sp\u00e9cification officielle GeoParquet 1.0.0 (PDF)<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Exemple d\u2019inspection technique (avec pyarrow)<\/strong><\/p>\n\n\n<div class='stb-container stb-style-download stb-caption-box'><div class='stb-caption'><div class='stb-logo'><img class='stb-logo__image' 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' alt='img'\/><\/div><div class='stb-caption-content'> <\/div><div class='stb-tool'><\/div><\/div><div class='stb-content'><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">import pyarrow.parquet as pq<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"># Charger un fichier GeoParquet<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">table = pq.read_table(\u00ab\u00a0fichier.parquet\u00a0\u00bb)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">metadata = table.schema.metadata<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"># Acc\u00e8s aux m\u00e9tadonn\u00e9es GeoParquet<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">print(metadata[b\u00a0\u00bbgeo\u00a0\u00bb].decode(\u00ab\u00a0utf-8\u00a0\u00bb))<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>R\u00e9sum\u00e9<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Aspect<\/strong><\/td><td><strong>D\u00e9tail<\/strong><\/td><\/tr><tr><td><strong>Format<\/strong><\/td><td>.parquet<\/td><\/tr><tr><td><strong>G\u00e9om\u00e9trie<\/strong><\/td><td>Colonne(s) WKB<\/td><\/tr><tr><td><strong>M\u00e9tadonn\u00e9es spatiales<\/strong><\/td><td>Stock\u00e9es dans la cl\u00e9 geo au format JSON<\/td><\/tr><tr><td><strong>Avantages<\/strong><\/td><td>Compression, parall\u00e9lisme, cloud-native<\/td><\/tr><tr><td><strong>Outils<\/strong><\/td><td>GDAL, PyArrow, GeoPandas, QGIS (via GDAL), DuckDB<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Travailler_avec_GeoParquet_dans_QGIS\"><\/span><strong>Travailler avec GeoParquet dans QGIS<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Travailler avec <strong>GeoParquet dans QGIS<\/strong> est aujourd\u2019hui possible, mais n\u00e9cessite certaines pr\u00e9cautions, car le support de ce format est encore en d\u00e9veloppement dans l\u2019\u00e9cosyst\u00e8me g\u00e9ospatial.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Voici un <strong>guide pratique<\/strong> \u00e9tape par \u00e9tape pour comprendre et utiliser le <strong>GeoParquet dans QGIS<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>GeoParquet<\/strong> est une sp\u00e9cification pour stocker des donn\u00e9es spatiales dans le format <strong>Apache Parquet<\/strong>, avec des m\u00e9tadonn\u00e9es g\u00e9om\u00e9triques compatibles avec les SIG.<br>Il combine la <strong>vitesse<\/strong> et <strong>compacit\u00e9<\/strong> de Parquet avec la <strong>structure g\u00e9om\u00e9trique<\/strong> de formats comme GeoJSON ou <a href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/shapefile-vs-geopackage-2\/\">Shapefile<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Conditions_pour_lutiliser_dans_QGIS\"><\/span><strong>1. Conditions pour l\u2019utiliser dans QGIS<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Versions_necessaires\"><\/span><strong>Versions n\u00e9cessaires :<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>QGIS \u2265 3.34<\/strong> <em>(ou 3.32 avec compilation GDAL r\u00e9cente)<\/em><\/li>\n\n\n\n<li><strong>GDAL \u2265 3.6<\/strong>, avec le support de Parquet et Arrow activ\u00e9<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"> V\u00e9rifiez dans QGIS :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Menu Pr\u00e9f\u00e9rences &gt; Options &gt; Informations syst\u00e8me<\/li>\n\n\n\n<li>Cherchez dans GDAL\/OGR &nbsp;&gt; vecteur la ligne :\n<ul class=\"wp-block-list\">\n<li>Parquet &#8211; (rw+v): Apache Parquet<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Ouvrir_un_fichier_GeoParquet_dans_QGIS\"><\/span><strong>2. Ouvrir un fichier GeoParquet dans QGIS<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Methode_1_Glisser-deposer\"><\/span><strong>M\u00e9thode 1 : Glisser-d\u00e9poser<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Cr\u00e9e ton fichier .parquet depuis Python ou un autre SIG.<\/li>\n\n\n\n<li>Glisse le fichier dans QGIS.<\/li>\n\n\n\n<li>Si QGIS reconna\u00eet le format, il s\u2019ouvrira comme une couche vectorielle.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Methode_2_Ajouter_une_couche_vectorielle\"><\/span><strong>M\u00e9thode 2 : <\/strong><strong>Ajouter une couche vectorielle<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Couches &gt; Ajouter une couche &gt; Ajouter une couche vectorielle<\/li>\n\n\n\n<li>Source de donn\u00e9es : s\u00e9lectionne le fichier .parquet<\/li>\n\n\n\n<li>Type de fichier : Tous les fichiers ou Fichiers Parquet<\/li>\n\n\n\n<li>Valide.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Creer_un_GeoParquet_depuis_QGIS\"><\/span><strong>3. Cr\u00e9er un GeoParquet depuis QGIS<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">QGIS ne permet <strong>pas encore d\u2019exporter directement<\/strong> vers GeoParquet depuis l\u2019interface graphique. Mais vous pouvez :<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u27a4<\/strong><strong> Utiliser la console Python interne :<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">layer = iface.activeLayer()<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">gdf = QgsVectorLayerExporter.exportLayer(layer, &lsquo;\/chemin\/couche.parquet&rsquo;, &lsquo;parquet&rsquo;, layer.crs(), False)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u27a4<\/strong><strong> Ou passer par <\/strong><strong>OGR<\/strong><strong> en ligne de commande :<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ogr2ogr -f Parquet sortie.parquet couche.shp<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Par d\u00e9faut, cette commande produit du Parquet <strong>sans m\u00e9tadonn\u00e9es GeoParquet<\/strong>. Pour obtenir un <strong>vrai GeoParquet<\/strong>, il est pr\u00e9f\u00e9rable d\u2019utiliser GeoPandas avec pyarrow.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. Avantages dans QGIS<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li> <strong>Poids r\u00e9duit<\/strong> par rapport au GeoJSON ou Shapefile<\/li>\n\n\n\n<li> <strong>Chargement rapide<\/strong> avec des millions d\u2019entit\u00e9s<\/li>\n\n\n\n<li> <strong>Interop\u00e9rable<\/strong> avec Python, DuckDB, Spark, etc.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Bonnes_pratiques\"><\/span><strong> Bonnes pratiques<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Action<\/strong><\/td><td><strong>Recommand\u00e9<\/strong><\/td><\/tr><tr><td><strong>Travailler avec des points<\/strong><\/td><td> Tr\u00e8s bien support\u00e9<\/td><\/tr><tr><td><strong>Polygones complexes<\/strong><\/td><td> Attention aux projections<\/td><\/tr><tr><td><strong>\u00c9dition dans QGIS<\/strong><\/td><td> Pas encore support\u00e9 (lecture seule)<\/td><\/tr><tr><td><strong>Partage inter-outils<\/strong><\/td><td> Excellente compatibilit\u00e9<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hist\u00f3ria do Parquet e do GeoParquet 1. Apache Parquet &#8211; El formato original Historia: Objetivo: GeoParquet &#8211; Extensi\u00f3n geoespacial de Parquet Historia : A\u00f1o Evento 2021 (abril) Primeros intercambios en GitHub y en comunidades de c\u00f3digo&hellip;<\/p>\n","protected":false},"author":1,"featured_media":13971,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"sfsi_plus_gutenberg_text_before_share":"","sfsi_plus_gutenberg_show_text_before_share":"","sfsi_plus_gutenberg_icon_type":"","sfsi_plus_gutenberg_icon_alignemt":"","sfsi_plus_gutenburg_max_per_row":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1357],"tags":[1939,3252,1941,3254,2797,1369],"class_list":["post-13974","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-qgis-es","tag-gdal-es","tag-geoparquet-es","tag-ogr-es","tag-parquet-es","tag-python-es","tag-qgis-es"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.sigterritoires.fr\/wp-content\/uploads\/2025\/05\/geoparquet_qgis.png?fit=477%2C265&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p6XU0A-3Do","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/posts\/13974","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/comments?post=13974"}],"version-history":[{"count":0,"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/posts\/13974\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/media\/13971"}],"wp:attachment":[{"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/media?parent=13974"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/categories?post=13974"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sigterritoires.fr\/index.php\/wp-json\/wp\/v2\/tags?post=13974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}