on January 7, 2023
Clip rasters and vectors simultaneously in QGIS 2.18
Geographic Information SystemsHow do I clip a vector in Qgis? Click the Vector menu at the top of the QGIS program, mouse-over Geoprocessing Tools, and click Clip… There are 3 areas to this tool you will need to be concerned with: Input vector layer: the larger shapefile. Clip layer: the boundary you want to clip the input
on January 7, 2023
Using polygon (simulating annotation) shapefile in ArcGIS Desktop?
Geographic Information SystemsHow do I convert annotations to shapefile? Procedure Convert directly from Annotation to Shapefile in ArcCatalog. In ArcCatalog, right-click on the annotation feature class and select ‘Export > To Shapefile (single)’. Select an Output Location and give the Output Feature Class a name. Convert from Annotation to a Coverage then to a Shapefile. Note: How
on January 7, 2023
Backwards compatibility for QGIS 3.2.1 Processing Modeler
Geographic Information SystemsIs QGIS backwards compatible? The API of QGIS libraries is allowed to be changed just between major versions of QGIS. For example, there are various planned backwards incompatible changes between QGIS 1.8 and 2.0 because the version 2.0 is a new major version. Does QGIS have a model builder? Therefore we can arrange and connect
on January 7, 2023
Get the begin and end coordinates of city municipality
Geographic Information SystemsHow do you find the coordinates of a city? Get the coordinates of a place On your computer, open Google Maps. Right-click the place or area on the map. This will open a pop-up window. You can find your latitude and longitude in decimal format at the top. To copy the coordinates automatically, left click
on January 7, 2023
Performance of PostgreSQL VIEW published in GeoServer?
Geographic Information SystemsAre Postgres views indexed? PostgreSQL Usage PostgreSQL doesn’t support indexed views, but does provide similar functionality with materialized views. You can run queries associated with materialized views, and populate the view data with the REFRESH command. How do Views work PostgreSQL? A Postgres view is a virtual table in Postgres. It represents the result of
on January 7, 2023
Automatically calculating geometry area when adding polygon in ArcMap?
Geographic Information SystemsHow do I enable calculate geometry in ArcMap? Right-click the field heading for which you want to make a calculation and click Calculate Geometry. Optionally, you can press CTRL+SHIFT+G to open the Calculate Geometry dialog box. Click the geometric property you want to calculate. Different properties are available depending on the type of layer you’re
on January 7, 2023
Extracting values between neighbouring raster cells using QGIS?
Geographic Information SystemsHow to extract point Data from raster in qgis? Quote from video: Tool box and it's a QGIS. Tool. So if you have to feed it in points an input raster layer. We'll just start off with the elevation. This will be what it gets thrown into. How do I extract pixel values in Qgis?
on January 7, 2023
Can you reduce the number of contour lines?
Geographic Information SystemsWhat are the four rules concerning contour lines? Every point on a contour line is of the exact same elevation. Every point on a contour line is of the exact same elevation. By definition, contour lines separate points of higher elevation from points of lower elevation. Contour lines never cross. Contour lines never split. How
on January 7, 2023
What’s a provider in PyQGIS and how many types of providers exist?
Geographic Information SystemsWhat can you type to access the currently active layer in Qgis? activeLayer() method gives us the currently selected layer. The type() function of a layer can be used to test the type of the layer: if activeLayer. type() == QgsMapLayer. How to set Python path in QGIS? This can be fixed by setting the
on January 7, 2023
Self-made RTK correction with RTCM data
Geographic Information SystemsWhat is RTCM correction data? RTCM SC-104 is a standard that defines the data structure for differential correction information for a variety of differential correction applications. It was developed by the Radio Technical Commission for Maritime Services (RTCM) and has become an industry standard for communication of correction information. How do I get data from