on February 3, 2023
Calculate geometry field automatically from east and north fields in QGIS
Geographic Information SystemsHow do I calculate a field in QGIS? The quick field calculation bar on top of the attribute table is only visible if the layer is editable. In quick field calculation bar, you first select the existing field name then open the expression dialog to create your expression or write it directly in the field
on February 3, 2023
Troubleshoot code error for If then else Logical VBScript in ArcMap 10.3.1
Geographic Information SystemsHow do I generate sequential numbers in ArcMap? Double-click the Sequential Number function. This generates the Expression and the Code Block section to create the sequential numbers. How do I add text to a label in ArcMap? ArcMap labels are placed dynamically and are the easiest way to quickly add descriptive text for many features
on February 3, 2023
No processing tools in QGIS 3.2
Geographic Information SystemsHow do I get the processing tool in QGIS? While updating one of the two QGIS Classes – I stumbled into this “one really cool trick”. It all is hidden under the options menu. Go to Settings -> Options and navigate to the processing tab. How do I enable processing toolbar in QGIS? Activate OTB
on February 3, 2023
Suppress verbose output when something goes wrong with ogr2ogr
Geographic Information SystemsWhat does ogr2ogr do? The ogr2ogr command line program can be used to convert simple features data between file formats performing various operations during the process such as spatial or attribute selections, reducing the set of attributes, setting the output coordinate system or even reprojecting the features during translation. What formats does ogr2ogr output in?
on February 3, 2023
Pan sharpening with surface reflectance data
Geographic Information SystemsWhat is Pan sharpening in remote sensing? Panchromatic sharpening (pan-sharpening) is a technique that combines the high-resolution detail from a panchromatic band with the lower-resolution color information of other bands (usually only the visible bands). What is Pan sharpening used for? This process is used to increase the spatial resolution and provide a better visualization
on February 3, 2023
Uploading *.dwg layers to QGIS
Geographic Information SystemsHow do I add a DWG layer to QGIS? DXF and DWG files can be added to QGIS by simple drag-and-drop from the common Browser Panel. You’ll be prompted to select the sublayers you’d like to add to the project. Layers are added with random style properties. How to convert DWG to shapefile in QGIS?
on February 3, 2023
QGIS core plugins vs. normal plugin: what is the difference?
Geographic Information SystemsWhat is the purpose of Plugins in QGIS? Plugins in QGIS add useful features to the software. Plugins are written by QGIS developers and other independent users who want to extend the core functionality of the software. These plugins are made available in QGIS for all the users. What additional functionality does the plugin QuickOSM
on February 3, 2023
QGIS: Clip Raster by Mask Layer-permanently remove black edges
Geographic Information SystemsHow do I remove black from raster QGIS? To remove the black border temporarily in QGIS, you can set the “Additional no data value” in Layer properties -> Transparency to 0 (or 000000). If the border is not 100% black you can use the information tool to find out which color you need to set
on February 3, 2023
Reading non-standard JSON / TopoJSON files in GeoPandas
Geographic Information SystemsWhat file types can GeoPandas read? GeoPandas supports writing and reading the Apache Parquet and Feather file formats. Is GeoJSON the same as TopoJSON? TopoJSON is an extension of GeoJSON that encodes topology. Rather than representing geometries discretely, geometries in TopoJSON files are stitched together from shared line segments called arcs. Arcs are sequences of
on February 3, 2023
Drawing circle with OpenLayers3, but not seeing on map?
Geographic Information SystemsHow do I draw a circle in Google Maps? Draw a line or shape On your computer, sign in to My Maps. Open or create a map. Click Draw a line. Select a layer and click where to start drawing. Click each corner or bend of your line or shape. When you’re finished drawing, double-click