GIS传道者 · 精选文章
共 1694 篇精选
Google Earth Where is a KMZ file that I edited in the field located on my phone?
Question I was working with a KMZ file on the field, using the Google Earth mobile app and adding points and photos/text to each point. Now I cannot find it on my device and cannot
小程序阅读全文
Spectral indices fall outside the normal range
Question I'm a beginner in GIS and remote sensing, and I'm currently using ArcGIS Pro to calculate NDVI from Landsat imagery. However, I'm having a problem with the NDVI calculatio
小程序阅读全文
Why are contours from WhiteboxTools offset from the DEM?
Question I generated contours from a GeoTIFF DEM with WhiteboxTools' ContoursFromRaster. When I sample the DEM at the contour vertices, the values don't match the elevation the con
小程序阅读全文
Problems with qgis_global_settings.ini after QGIS migration from 3 to 4
Question Since the upgrade from QGIS 3.44.8 to QGIS 4.2.1 our customized settings in qgis_global_settings.ini are no longer being applied. Does anyone know why this is happening an
小程序阅读全文
Slope derived from filled DEM coming out somewhat nonsensical
Question I'm teaching myself QGIS as I go along and re-doing some of my old college assignments to try and learn how to translate the skillset from Arc to Q. In this particular tas
小程序阅读全文
Copying points to second layer based on spreadsheet list of events at those points in QGIS
Question I have a vector layer containing point features. I also have a spreadsheet containing a list of dates on which events happened at these locations. Some locations are liste
小程序阅读全文
Making two dimensional WKT with 2 decimal places in QGIS Field Calculator
Question I'm working with QGIS and need to create a WKT-file, without heights and just 2 decimal places. I can export the complete file and deselect the heights. I can use the fiel
小程序阅读全文
Getting MapTiler quantized mesh working with CesiumJS
Question We're trying to move away from Cesium Ion, and our proposed solution for terrain is to use MapTiler's terrain mesh (specifically terrain-quantized-mesh-v2) with CesiumJS.
小程序阅读全文
Information about other layers are shown (WMS) in QGIS
Question Whenever I add a WMS-layer in QGIS (which is made by GeoServer), I see info about other layers. This doesn't happen to WFS layers that are generated by GeoServer. Why does
小程序阅读全文
With gdal CLI commands is everything that is not a command name, considered an argument?
Question I am going through the gdal Syntax documentation and am trying to break down the components of a command sent to the CLI. I understand that there is the gdal program name,
小程序阅读全文
2026年，Autodesk终于统一了旗下各软件的坐标系！！！
最近 Autodesk University 2026 开完了，头条基本都是 AI、智能体和自然语言工作流，但小编关注到一个对GIS从业者来说非常有意义的消息，Autodesk 终于将 Forma、Revit、Civil 3D 地理定位坐标系给统一了！对经常被 BIM、市政、测绘三方坐标对不齐折磨的同学，这真的是一个喜大普奔的好消息，这么多年比GIS矢量化还
小程序阅读全文
Converting large GeoJSON file to shapefile while preserving UTF-8 attribute encoding with ogr2ogr
Question I have a large GeoJSON file (~3 GB) of building footprints whose attribute names and values contain non-Latin characters (Cyrillic). I converted it to an ESRI shapefile wi
小程序阅读全文