What are the differences between 81989 and 27700 CRS for the British National Grid?
Hiking & ActivitiesWhat is the difference between EPSG 7405 and 27700? In fact, EPSG:27700 can be used without any problem on any tools because it does not depend on a specific height grid. In contrast, EPSG:7405, is more accurate because it explicitely uses the ODN height data… but requires it to be loaded in the converter tool.
Adding a new CRS to QGIS 3.10 with custom coordinate reference system
Hiking & ActivitiesHow do I create a custom CRS in QGIS? To create a new CRS, or modify an existing CRS: Click Settings | Custom CRS to open the Custom Coordinate Reference System Definition. Click Add new CRS button to add a new entry to the CRS list above. With the new CRS selected, we can set
Determining if spatial reference Geographic or Projected using ArcObjects?
Hiking & ActivitiesWhat is the difference between geographic and projected coordinate reference systems? What is the difference between a geographic coordinate system (GCS) and a projected coordinate system (PCS) anyways? Here’s the short answer: A GCS defines where the data is located on the earth’s surface. A PCS tells the data how to draw on a flat
Joining table in ArcGIS Desktop but join field is greyed out?
Hiking & ActivitiesHow do I join an attribute table in Arcgis? Joining attributes in one table to another In the table of contents, right-click the layer or table you want to join, point to Joins and Relates, then click Join. Click the What do you want to join to this layer? Click the field on which the
How to download tile from Amazon’s Sentinel-2 service
Hiking & ActivitiesWhere can I download Sentinel-2 data? All Sentinel-2 data are freely available from the Copernicus Open Access Hub. Users can download the data via https://scihub.copernicus.eu/. How do I download data from my Sentinel hub? Sentinels Scientific Data Hub Create a User Account. Go to Sentinels Scientific Data Hub. Select Your Area of Interest. Where is
How to convert coverage (.adf) to shapefile?
Hiking & ActivitiesHow to convert coverage to shapefile? Put all the coverage files in one folder, select all the ones you want to change into shapefiles, right click, export –> shapefile (multiple), then select the output folder and OK. It takes a while but it’s so easy! How do I open ADF files in Arcgis? ADF files