on January 30, 2023
ArcGIS 10.x Create equidistant polyline that are perpendicular to an axis
Geographic Information SystemsHow do I draw a perpendicular line in Arcgis? Perpendicular On the Edit tab, in the Features group, click Create . Click a polyline or polygon feature template. Click Line or Polygon . Create the first vertex using one of the following methods: Constrain the new segment perpendicular using one of the following methods: How
on January 30, 2023
What projection to use for many parts of the world
Geographic Information SystemsWhich projection is suitable for whole world? Goode’s homolosine map projection was developed by John Paul Goode in 1925. One of the main key features of a Goode homolosine projection is its ability to minimize distortion for the entire world. Continents shown on Goode’s Homolosine maps are proportionally sized correctly to each other. What map
on January 30, 2023
Returning lat and long of centroid point with GeoPandas
Geographic Information SystemsWhat is centroid in geopandas? property GeoSeries. centroid[source] Returns a GeoSeries of points representing the centroid of each geometry. Note that centroid does not have to be on or within original geometry. What is CRS in Geopandas? A CRS tells Python how those coordinates relate to places on the Earth. You can find the codes
on January 30, 2023
How do I perform a proximity search with Postgis?
Geographic Information SystemsHow do I find the distance between two points in PostGIS? Solutions 1) Using ST_DistanceSpheroid to Calculate the Spherical Distance Between Two Geometric Points in a Spherical Coordinate System. 2) Using ST_Distance to Calculate the Distance Between Two Geometric Points on the Projected Plane in a Projected Coordinate System. How to work with PostGIS? Sample
on January 30, 2023
QGIS Real-Time Vector Layer Creation?
Geographic Information SystemsHow do I create a vector layer in GIS? 5.1. Lesson: Creating a New Vector Dataset Open QGIS and create a new blank project. Navigate to and click on the menu entry Layer ► Create Layer ► New Shapefile Layer. Click … for the File name field. Navigate to the exercise_data directory. Save your new
on January 30, 2023
How to Access the Current Value of the Scale Factor of a Map as a Variable (eg $map_scale) in Print Layouts in QGIS
Geographic Information SystemsHow do I find the scale of a map in QGIS? The scale of the map can be changed in the “Main Properties” under “Scale”. Set the scale at which the map is to be displayed in the canvas. How do I get to layout view in QGIS? To open the layout manager dialog: from
on January 30, 2023
EVI and NDVI range value
Geographic Information SystemsWhat is EVI value? Enhanced Vegetation Index (EVI) The value range for EVI is –1 to +1, and for healthy vegetation, it varies between 0.2 and 0.8. Formula: EVI = 2.5 * ((NIR – RED) / ((NIR) + (C1 * RED) – (C2 * BLUE) + L)) What is the value range of NDVI? +1.0
on January 30, 2023
Converting KML files for use with Python library Shapely
Geographic Information SystemsHow to import KML file in Python? Quote from video: Now we're going to go ahead and open this up in Google Earth Pro and to do that we use sub process and we imported that here dot-com then we use open and we put in the path. Let's go ahead and run it. How
on January 30, 2023
Location Allocation (lines) to Polygon map?
Geographic Information SystemsHow do I use location-allocation in ArcGIS pro? Choose the best location with Location-Allocation Get the data. Create a map. Add the tutorial data to the project. Create the location-allocation layer. Add candidate facilities. Add demand points. Set up properties of the location-allocation analysis. Run the analysis to determine the best store locations. What ArcGIS
on January 30, 2023
Cannot install QGIS 3 on Ubuntu 18.04 (From ubuntu repo. Not ubuntugis-unstable )
Geographic Information SystemsHow do I install QGIS software on Ubuntu? 2.3. 1. QGIS download and installation¶ Open a terminal and type: sudo apt-get update. Press Enter and type the user password; Type in a terminal: sudo apt-get install qgis python-matplotlib python-scipy. Press Enter and wait until the software is downloaded and installed. Which version of QGIS should