Category: Geographic Information Systems

No processing tools in QGIS 3.2

How 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

Suppress verbose output when something goes wrong with ogr2ogr

What 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?

Pan sharpening with surface reflectance data

What 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

Uploading *.dwg layers to QGIS

How 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?

QGIS core plugins vs. normal plugin: what is the difference?

What 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

QGIS: Clip Raster by Mask Layer-permanently remove black edges

How 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

Reading non-standard JSON / TopoJSON files in GeoPandas

What 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

Drawing circle with OpenLayers3, but not seeing on map?

How 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

QGIS CRS WGS 84 problem with the scale and measurement

How do I fix CRS in QGIS? Open new map in QGIS and from menu bar select Project -> Project Properties. Select CRS tab on left side of Project Properties window and check the box “Enable ‘on the fly’ CRS transformation. Choose appropriate CRS, apply changes, and close window.  How do I fix projection in

Landsat Gap Fill

What is gap mask in Landsat 7? Band-specific gap mask files are included with every Landsat 7 Scan Line Corrector (SLC)-off Level-1 data product. These ancillary data identify the location of all pixels affected by the original data gaps in the primary SLC-off scene. How do I create a gap fill? You just click on

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