on February 2, 2023
Zonal Statistics tool not working with QGIS?
Geographic Information SystemsWhy is zonal statistics not working? If the raster cell size is larger than a given boundary, there may be no cells with centroids within the boundary, and hence no statistics or inaccurate statistics are produced for that zone. How do I add zonal statistics in Qgis? Quote from video: We're going to use the
on February 2, 2023
Resizing polygon features in ArcGIS Desktop based on attribute value?
Geographic Information SystemsHow do I scale a polygon in ArcGIS? Select the desired polygon(s), and rescale it.Use the Scale button: Start an edit session. Use the Select arrow to select the feature you want to adjust. Click on the Scale button. Hit the “F” key on your keyboard. How do you scale features in ArcGIS? Click the
on February 2, 2023
Can’t import shapefiles into SQL Server, because of Encoding issues
Geographic Information SystemsHow do I add a Shx file to Qgis? Open QGIS and click LAYER > ADD LAYER > ADD VECTOR LAYER. Select the zipped shapefile. Click OPEN. You have now successfully imported a shapefile into QGIS. How do I add a SHP file to Qgis? Quote from video: Hi everyone this is Amos and now
on February 2, 2023
Reproject before a Spatial Join
Geographic Information SystemsHow does a spatial join work? A spatial join involves matching rows from the Join Features to the Target Features based on their relative spatial locations. By default, all attributes of the join features are appended to attributes of the target features and copied over to the output feature class. How do I Reproject points
on February 2, 2023
Georeferencing files that are orthogonal to a point on a sphere
Geographic Information SystemsWhat are the three methods of georeferencing? Georeferencing can be seen from different perspectives. It may be classified by type (vector or raster referencing), by identification category (semantic, topological or geometrical) and by application scenario. How do I reduce RMS error in georeferencing? The total error is computed by taking the root mean square (RMS)
on February 2, 2023
How can I increase performance on inserting features with polygon geometry?
Geographic Information SystemsWhat is the feature of polygon? In mathematics, a polygon is defined as a figure with three or more sides, and lying on one plane. Thus, triangles or octagons are examples of polygons. In the GIS world the meaning is similar, but goes beyond. How do I convert polygons to points in Arcgis pro? Select
on February 2, 2023
Semi Automated Classification plugin (QGIS) error when trying to create ROI
Geographic Information SystemsHow to create ROI in QGIS? In order to create a ROI, in the dock ROI creation click the button + beside Create a ROI (this activates the ROI pointer); ROIs are created by clicking on any pixel of the image; click on the dark area in the South, which is the Lake Albano (use
on February 2, 2023
Low-cost centimeter-level accurate satellite positioning (GNSS/GPS)
Geographic Information SystemsWhat is centimeter level accuracy GPS? Centimeter-level accuracy is achieved using a complex algorithm known as real-time kinematic (RTK) processing. It involves processing correction data from a ground network of GNSS receivers in addition to the signals transmitted by the GNSS satellites. Is 10 cm GPS accurate? The working prototype that demonstrated this new mobile
on February 2, 2023
Generate polygons for each map extent in ArcGIS DDP layout
Geographic Information SystemsHow do you set a map extent in ArcGIS? Set a dynamic full map extent In a map or scene view, right-click the name of the map or scene in the Contents pane and click Properties to open the Map Properties dialog box. On the Extent tab, click Use extent of data in all layers.
on February 2, 2023
K-means clustering in QGIS with statistically significant difference
Geographic Information SystemsHow do you find the best value for K-means clustering? Our task is to use the K-means Clustering algorithm to do this categorization. Step 1: Select the Number of Clusters, k. Step 2: Select k Points at Random. Step 3: Make k Clusters. Step 4: Compute New Centroid of Each Cluster. Step 5: Assess the