TLGeo is a software company specializing in GIS (geographic data), construction. We focus on developing tools that enable GIS data collection, editing and sharing on android, iOS, web.https://tlgeo.xyz/en-ushttps://tlgeo.xyz/blog/types-of-satellite-imagery/https://tlgeo.xyz/blog/types-of-satellite-imagery/Explore the various types of satellite imagery used in GIS — from optical and radar to multispectral and LiDAR — and learn how to choose the right imagery for your project.Sun, 05 Apr 2026 00:00:00 GMTTLGeo Teamhttps://tlgeo.xyz/blog/geocollect-supported-file-formats/https://tlgeo.xyz/blog/geocollect-supported-file-formats/A complete list of GIS file formats supported by Geocollect (iOS, Android) and Geocloud for importing and exporting geographic data — from GeoJSON, KML, GPX, Shapefile to MapInfo TAB.Mon, 06 Apr 2026 00:00:00 GMTTLGeo Teamhttps://tlgeo.xyz/blog/forest-information-system/https://tlgeo.xyz/blog/forest-information-system/In the digital transformation era, forestry faces a paradox: increasingly large management areas, stricter international certification requirements, yet management methods at many locations remain stuck with notebooks and paper maps. This article analyzes challenges and proposes FIS solutions from TLGeo.Sun, 26 Apr 2026 00:00:00 GMTTLGeo Teamhttps://tlgeo.xyz/blog/common-gis-file-formats-explained/https://tlgeo.xyz/blog/common-gis-file-formats-explained/A comprehensive guide to GIS file formats — from vector (SHP, GeoJSON, KML...) and raster (GeoTIFF...) to databases (GDB, SpatiaLite...) — including how to convert between them.Sun, 05 Apr 2026 00:00:00 GMTTLGeo Teamhttps://tlgeo.xyz/blog/digital-maps-transforming-grassroots-governance/https://tlgeo.xyz/blog/digital-maps-transforming-grassroots-governance/Discover 4 important pillars that digital map systems bring to grassroots administrative management: data synchronization, specialized management, smart decision-making, and citizen monitoring.Tue, 05 May 2026 00:00:00 GMTTLGeo Teamhttps://tlgeo.xyz/blog/opera-dist-tracking-earth-changes/https://tlgeo.xyz/blog/opera-dist-tracking-earth-changes/Learn about the OPERA Land Surface Disturbance (DIST) product suite - a powerful tool for monitoring land changes using Sentinel-1 and HLS satellite data at 30m resolution.Mon, 04 May 2026 00:00:00 GMTTLGeo Teamhttps://tlgeo.xyz/blog/technology-for-forestry/https://tlgeo.xyz/blog/technology-for-forestry/Explore 4 key technology pillars in modern forestry: remote sensing, IoT monitoring, blockchain traceability and carbon estimation — helping transition from manual management to Forestry 4.0.Wed, 08 Apr 2026 00:00:00 GMTTLGeo Teamhttps://tlgeo.xyz/blog/introduction-to-forest-information-system/https://tlgeo.xyz/blog/introduction-to-forest-information-system/Learn about Forest Information Systems (FIS): concepts, importance, types of systems, components, and benefits in sustainable forest management.Mon, 27 Apr 2026 00:00:00 GMTTLGeo Teamhttps://tlgeo.xyz/blog/vietnam-forest-owners-digital-transformation/https://tlgeo.xyz/blog/vietnam-forest-owners-digital-transformation/Discover the real benefits of Forest Information Systems (FIS) for Vietnamese forest owners: forest management, profit optimization, FSC/PEFC certification, and carbon credits.Tue, 05 May 2026 00:00:00 GMTTLGeo Teamhttps://tlgeo.xyz/blog/what-is-opendatacube/https://tlgeo.xyz/blog/what-is-opendatacube/OpenDataCube is an open-source software that replaces Google Earth Engine — self-hosted, no quota limits, runs offline. This article shares my personal experience learning and applying ODC to TLGeo products.Wed, 15 Apr 2026 00:00:00 GMTTLGeo Teamhttps://tlgeo.xyz/blog/vn2000-noi-bo-va-hoi-nhap/https://tlgeo.xyz/blog/vn2000-noi-bo-va-hoi-nhap/When importing MapInfo or Microstation .dgn data into GeoCollect, maps shift by hundreds of meters relative to the base map. The root cause is confusion between two VN-2000 coordinate systems. This article decodes the role of proj string +towgs84 and how to choose the right coordinate system.Wed, 22 Apr 2026 00:00:00 GMTTLGeo Team