Computing convex hull of points using shapely
Hiking & ActivitiesHow do you find the convex hull of a set of points? To find the convex hull of a set of points, we can use an algorithm called the Graham Scan, which is considered to be one of the first algorithms of computational geometry. How do you find the convex hull of a point in
How to hide/toggle legends with layer controls in Leaflet for R
Hiking & ActivitiesHow do I add a legend to a leaflet in R? Use the addLegend function to add a legend. The easiest way to use addLegend is to provide pal (a palette function, as generated from colorNumeric et al.) and values , and let it calculate the colors and labels for you. How do I delete
Problem with saving/processing layers in QGIS
Hiking & ActivitiesHow do I permanently save a layer in QGIS? Every layer, including all possible data processed, can be saved as a shapefile. Go to the Layers Panel on the left side. Right-click on the relevant layer. Click on Save as… Select Esri Shapefile. Choose a name and a location. Click on OK. Why are
Using r.houghtransform in GRASS GIS
Hiking & ActivitiesHow do you set grass in GIS? When launching GRASS GIS for the first time, you will open a default Location “world_latlog_wgs84” where you can find a map layer called “country_boundaries” showing a world map in the WGS84 coordinate system. Running GRASS GIS for the first time, a folder named “grassdata” is automatically created. Where
Using PostGIS as editable database with ArcGIS Pro
Hiking & ActivitiesHow do I connect ArcGIS Pro to PostGIS? Connect to the database Open the Catalog pane in ArcGIS Pro. Right-click Databases and click New Database Connection. Choose PostgreSQL from the Database Platform drop-down list. In the Instance text box, type the database cluster name or IP address of the server where PostgreSQL is installed. Does
AutoCAD convert polyline to polygon
Hiking & ActivitiesHow do I convert a polyline to a polygon in AutoCAD? To Convert Polyline Objects to Polygons Set the PROXYGRAPHICS system variable to 0. On the command line, enter mappolylinetopolygon. Press Enter. If you already had a selection set, the selected closed polylines are converted. If you did not have a selection set, select the