Posted on February 16, 2023 (Updated on July 10, 2025)
How to get a feature that lies closest to a point in openlayers?
Hiking & ActivitiesHow do you find the nearest point to a set of points? The idea is to split the point set into two halves with a vertical line, find the closest pair within each half, and then find the closest pair between the two halves. The result of finding the closest pair within each half speeds
Posted on February 16, 2023 (Updated on July 10, 2025)
Query a QGIS server WMTS using a RESTful URL as defined by the OGC
Hiking & ActivitiesIs QGIS OGC compliant? QGIS supports WFS 1.0. 0, 1.1. 0, 2.0 and OGC API – Features (OAPIF), including editing (through WFS-T). In general, adding a WFS layer is very similar to the procedure used with WMS. What is OGC in Qgis? The Open Geospatial Consortium (OGC) is an international organization with membership of more
Posted on February 16, 2023 (Updated on July 10, 2025)
Classifying above ground LiDAR points in ArcMap?
Hiking & ActivitiesHow do you classify LiDAR data in Arcgis? Lidar points can be classified into a number of categories including bare earth or ground, top of canopy, and water. The different classes are defined using numeric integer codes in the LAS files. What is ground classification in LiDAR? Ground classification is a preprocessing step to segment
Posted on February 16, 2023 (Updated on July 10, 2025)
Saving Virtual Layer to temporary layer
Hiking & ActivitiesHow do I save a temp layer in QGIS? If you wish to save a copy of a Temporary layer so that you can use it later or email to a colleague, then you can simply right click on the layer in the Layers Panel and choose Make Permanent. How do I save a virtual
Posted on February 16, 2023 (Updated on July 10, 2025)
How to calculate Multispectral Vegetation Indices using Python
Hiking & ActivitiesHow do you calculate vegetation index? It is calculated by taking a ratio between the difference of reflectance from NIR and Red bands and the sum of reflectance from NIR and Red bands. How to calculate NDVI in Python? Calculate NDVI in Python import os import matplotlib.pyplot as plt import numpy as np import rioxarray
Posted on February 16, 2023 (Updated on July 10, 2025)
Generating polygons from centroids with rotation and dimensions
Hiking & ActivitiesWhat is the centroid formula for polygons? The centroid (a.k.a. the center of mass, or center of gravity) of a polygon can be computed as the weighted sum of the centroids of a partition of the polygon into triangles. The centroid of a triangle is simply the average of its three vertices, i.e., it has