on December 26, 2022
Coded Value Domains in ArcMap
Geographic Information SystemsWhat is a coded value domain? The coded value domain includes both the actual value that is stored in the database (for example, 1 for pavement) and a more user-friendly description of what that value actually means. Validation for coded value domains is accomplished by restricting the user to choose field values from a drop-down
on December 26, 2022
How to enable a Leaflet Draw tool programatically
Geographic Information SystemsHow to use leaflet draw in Angular? Generally, the steps are: Follow the instructions to install and configure @asymmetrik/ngx-leaflet. Install this library and the Leaflet-draw typings (see above). Import the Leaflet and Leaflet-draw stylesheet. Import the ngx-leaflet and ngx-leaflet-draw modules into your Angular project. How do I install leaflet plugins? 1 Answer Click on the
on December 26, 2022
Difference between Geographic-3D and Geocentric CRS
Geographic Information SystemsWhat is the difference between geographic and geodetic? Two basic types of coordinate systems exist for geographic data: geodetic coordinate systems based on map projections and geographic coordinate systems based on latitude and longitude (for details, see for example Hake et al., 2002; Longley et al., 2006). What are the major differences between a geodetic
on December 25, 2022
Filter expressions on attribute table
Geographic Information SystemsHow do I filter features in attribute table in Qgis? Filtering In the Layers Panel, double-click on the layer you wish to filter. The Layer Properties window will open. Click on the General tab. Go to the Query Builder at the bottom right and click on it. You can now enter a Query. Click on
on December 25, 2022
Calculating area of pixels in continuous raster using ArcGIS Desktop?
Geographic Information SystemsHow do I calculate pixel area in ArcGIS? An easy way to find the area is to right click the output raster that you just created, click Properties, click the Symbology tab, and note the Count for the pixels that are displayed. How do you find total area of a raster? The „area“ function of
on December 25, 2022
Minimum and maximum coordinates of a polygon in Earth engine
Geographic Information SystemsWhat are the minimum and maximum possible values for longitude and latitude for the planet? Latitude and longitude are a pair of numbers (coordinates) used to describe a position on the plane of a geographic coordinate system. The numbers are in decimal degrees format and range from -90 to 90 for latitude and -180 to
on December 25, 2022
Python equivalent of EE ‘require’
Geographic Information SystemsWhat is EE in Python? The Python API package is called ee . It must be imported and initialized for each new Python session and script: import ee. How to initialize Earth Engine in Python? First of all, run the following cell to initialize the API. The output will contain instructions on how to grant
on December 25, 2022
What QGIS tool or plugin is equivalent to the ESRI “Near” tool?
Geographic Information SystemsIs QGIS similar to ArcGIS? QGIS is the lean and nimble open-source version of ArcGIS. Simpler than ArcGIS, it is perfect for small projects which use less data, and since it’s free, it’s ideal for organizations with leaner budgets. It’s compatible with ArcGIS, however, so QGIS users can still accept and work with ArcGIS-specific files.
on December 25, 2022
Pearson correlation of two 1D array in Earth Engine
Geographic Information SystemsCan Pearson correlation be used for ratio data? The Pearson correlation coefficient is used with interval or ratio data, hence option d) is correct. Can I use both Pearson and Spearman correlation? If you want to explore your data it is best to compute both, since the relation between the Spearman (S) and Pearson (P)
on December 25, 2022
ArcMap populate field with value from another dataset
Geographic Information SystemsHow do I calculate a field based on another field in ArcGIS? Procedure In ArcMap, right-click the selected layer in Table Of Contents, and select Open Attribute Table. In the attribute table window, create a new field. In the Editor toolbar, click Editor > Start Editing. Right-click the newly created field, and select Field Calculator.