Why is geography faster than geometry for distance calculations?
Hiking & ActivitiesWhat is the difference between geometry and geography? Geometry, where it assumes all of your data lives on a Cartesian plane (like a map projection); Geography, where it assumes that your data is made up of points on the earth’s surface, as specified by latitudes and longitudes. How do we calculate distance in geography? Summary.
Substracting raster values from 2 rasters with different cell sizes
Hiking & ActivitiesHow do you subtract two raster layers in Arcgis? Procedure In ArcMap, navigate to ArcToolbox > Spatial Analyst Tools > Map Algebra > Raster Calculator. In the Raster Calculator window, double-click one of the rasters to be analysed, click the minus sign (-), and double-click the second raster. Specify the name and location for the
Which projection casts rays from a point on the surface of the globe to a cylinder?
Hiking & ActivitiesWhich type of projection is also called cylindrical projection? Mercator projection The familiar Mercator projection (q.v.) is a cylindrical projection. What is cylindrical projection used for? Cylindrical projections are commonly used for world maps, regions bordering the equator, and regions that are predominantly north-south in extent. What is an example of a cylindrical projection? Cylindrical
Putting x y locations into ArcMap?
Hiking & ActivitiesSteps for adding x,y data as a layer Click File > Add Data > Add XY Data. Select the table that contains x,y coordinate data. Identify the columns that hold the x- and y-coordinates (and, optionally, the z-coordinate). Specify the coordinate system. How do you add XY coordinates to a shapefile? Right click on your
QGIS raster calculator not keeping each pixel with 1 byte?
Hiking & ActivitiesHow do I change the pixel value in Qgis? Editing DEM pixels values in QGIS using Serval Plugin Probe button allows you to check the cell values in the raster. Drawing button activate the ability to modify the values of a raster cell. Clicking on the Set raster cell values to NoData button and then
Choose an attribute dropdown for ArcGIS webbuilder app
Hiking & ActivitiesHow do I create a dropdown in ArcGIS online? On your hosted feature layer’s item details page, go to the Data tab>click the Fields button> click on the display name of the field of interest (blue hyperlink)>check out the List of Values (Domain) at the bottom of the screen. If there are choices in a