Calculating distance between a point and the nearest line, PostGIS

How do you calculate the distance between a point and a line? Quote from video: Minus x1 squared plus y2 minus y1 the quantity squared and you take the square root of that. How do I find the distance between two points in Postgis? You can use ST_DistanceSpheroid to calculate the distance between two geometric

How to create a polygon with a circular hole in openlayers 3?

How do you create a polygon with a hole in it Arcgis pro? A hole in a polygon feature is a part of a multipart feature. To create a hole, finish the primary part and sketch the hole. Alternatively, you can split the feature and delete the part, or clip a hole using an existing

How to copy entire fields into a python list

How do I copy all the elements in a list Python? Different Ways to copy list: Using the slicing technique. Using the extend() method. List copy using =(assignment operator) Using the method of Shallow Copy. Using list comprehension. Using the append() method. Using the copy() method.   What is copy () in Python list? Python

What’s a good way to implement an ‘Attributes to keep’ option in a QGIS processing script?

How to write a script for QGIS? Within QGIS, you can use Create new script in the Scripts menu at the top of the Processing Toolbox to open the Processing Script Editor where you can write your code. To simplify the task, you can start with a script template by using Create new script from

Labelling point elevations of raster (DEM) using QGIS

How to get elevation data from DEM in QGIS? Method Ensure that DEM and 2d_zsh line layer files are opened, and the Point Sampling Tool plugin has been installed (Plugins >> Manage and Install Plugins >> Point Sampling Tool) Convert line vertices to points, using the preferred method described in the QGIS Convert Lines to

Combine multiple geojsons

How do I combine multiple GeoJSON files into one? geojson-merge (for dummies) Start the node. Open cmd.exe. Browse to a folder where you’d like geojson-merge installed. In cmd.exe type the install string from above. Wait patiently, it could take a moment to start. Use cd node_modules to change directory to the node_modules folder. For simplicity

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