Creating an sf object from the maps package
Hiking & ActivitiesHow do you create an SF object? Quote from video: In practice sf objects are usually created by reading in a shapefile or something like that however particularly for point observations. What package is SF in R? The sf package represents simple features as native R objects, using simple data structures (S3 classes, lists, matrices,
Add Geometry Attributes tool failing on line feature class and giving no error code using ArcMap
Hiking & ActivitiesHow do I fix invalid geometry in ArcGIS? Start ArcMap. On the main menu, click Customize > Toolbars > Data Reviewer. Click the Select Data Check drop-down arrow on the Data Reviewer toolbar, click the plus sign (+) next to Default Checks, then click Invalid Geometry Check. Why can’t I add a field to attribute
Creation of polygon in the gap between two existing polygons
Hiking & ActivitiesHow do I fill gaps between two polygons in Arcgis? Select the polygons that have holes you want to fill. on the Production Editing Advanced toolbar. Press the Ctrl key and click inside any of the selected polygons. The Fill Hole message appears and notifies you that all holes in the selected features will be
Why are my polygon features area being calculated as zero?
Hiking & ActivitiesHow do you find the area of a polygon? The formula to calculate the area of a regular polygon is, Area = (number of sides × length of one side × apothem)/2, where the value of apothem can be calculated using the formula, Apothem = [(length of one side)/{2 ×(tan(180/number of sides))}]. How do you
Removing parts of raster layer with QGIS (equivalent of vector difference tool)?
Hiking & ActivitiesHow do I trim a raster image in QGIS? Clipper Tool Verify the raster you want clipped is the Input file. Click “Select…” next to the Output file, find your working folder, and name the output raster. Click the radio button next to Mask layer and use the drop-down arrow to select the layer you
Using QGIS SpatiaLite/Geopackage databases on shared network drives
Hiking & ActivitiesCan you open a GeoPackage in QGIS? You are now ready to add any layer from this GeoPackage to QGIS. Click on the Connect button. In the central part of the window you should now see the list of all the layers contained in the GeoPackage file. Select the roads layer and click on the