on February 10, 2023
Spatial join based on a categorising attribute
Geographic Information SystemsWhat are the different types of spatial Joins? There are four types of spatial joins: outer join, inner join, left join, and right join. These spatial join types determine which features from both datasets are kept in the resulting output dataset. In which of the following ways does a spatial join differ from an attribute
on February 10, 2023
List all available extensions using Python to get extension code
Geographic Information SystemsHow to get list of all files with extension Python? The method os. listdir() lists all the files present in a directory. We can make use of os. walk() if we want to work with sub-directories as well. How do I find an extension in Python? We can use Python os module splitext() function to
on February 10, 2023
Transform 1860s Australian (English?) map coordinates to modern ones
Geographic Information SystemsWhat is the coordinate system of Australia? GDA is the current national standard, as applied through both geographic and projected coordinate systems. It replaces the AGD. In Australia, the standard projection used with projected coordinate systems is the Map Grid of Australia (MGA94) which utilises the Geocentric Datum of Australia (GDA). How do you read
on February 10, 2023
Varying extent of each Data Driven Page using ArcMap
Geographic Information SystemsHow do I change the scale of a data driven page? Click the scale control on the Standard toolbar and type 1:50,000 as the map scale. The map book example above specifies each map should be at a scale of 1:50,000. Click Customize > Toolbars > Data Driven Pages from the main menu. How do
on February 10, 2023
ArcGIS Online “Add members using their enterprise ID” – what value to use for “Enterprise ID”?
Geographic Information SystemsHow do I add a user to ArcGIS enterprise? Allow users to add their own accounts Verify that you are signed in as an administrator of your organization. Choose a default user type and role to be assigned to new members. Click Organization > Settings > Security. Check the box next to Allow users to
on February 10, 2023
Raster Data set Size on Disc (ArcGIS)
Geographic Information SystemsHow do I change raster size in Arcgis? Quote from video: So for this tutorial I'm going to increase the pixel size to be 150 by 150 meters. And the resampling technique I'm going to use the nearest neighbor. How do I rescale raster data? Procedure Open the Raster Calculator from the Spatial Analyst toolbar.
on February 10, 2023
Fast zipcode detection from latitude/longitude
Geographic Information SystemsHow do I get a zipCode from latitude and longitude in Python? The first thing to do is installing Geopy. pip install geopy. Establishing Connection. from geopy.geocoders import Nominatim. from geopy.extra.rate_limiter import RateLimiter. location = geocode.reverse((lat, long)) location.raw. zipcode = location.raw[‘address’][‘postcode’] # after initiating geocoder. How do I convert zip code to latitude and
on February 10, 2023
Drawing points around polygon in QGIS?
Geographic Information SystemsHow do you draw a polygon with points? Procedure Use the Aggregate Points (Cartography) tool. Use the Minimum Bounding Geometry (Data Management) tool. Use the Create Thiessen Polygons (Analysis) tool. Use the Points To Line (Data Management) and Feature To Polygon (Data Management) tools. How do you draw a bounding box in QGIS? Quote from
on February 10, 2023
Update field properties of a layer definition with ArcGis Python API
Geographic Information SystemsHow do I update ArcGIS API in Python? Upgrade package Select the Python menu option. Use the Project Environment dropdown to chooose the appropriate environment. Select the Update Packages option. Choose the appropriate arcgis release from the list of packages with recent updates. How do you update a feature layer in ArcGIS online? Procedure On
on February 10, 2023
Understanding OverpassTurbo query?
Geographic Information SystemsHow do I query overpass Turbo? Click the green run button to try the query against the live database. Your browser will open up a new page, loading the query and the description into the Overpass Turbo IDE. The query will run automatically so you can see the results. Many of the queries include commented