Category: Geographic Information Systems

Rendering based on layer overlap qgis?

How do you find overlapping layers in Qgis? Duplicate the same layer and select the spatial query tool. Add the original and the copied layers. Select overlap instead of intersection. Run it, and you find the intersecting buffers highlighted.  What is a Categorised style render? The Categorized Renderer is used to render all features from

How to extract a small area from a big GTFS feed?

How do I use GTFS data? Getting Started Create all the required files described in the GTFS Schedule reference. Create the optional files if their functionality is desired. Save all files in the . txt format. Zip all the text files together. The zipped file comprises a version of the feed. Publish the feed by

Distance between a point and polygon

How do you find the distance between a point and a polygon? Point to Polygon Because a polygon is an area enclosed by an ordered collection of line segments, calculating the distance from a point to a polygon involves identifying the closest line segment to the point, and then Rule 2 is applied to get

Is there an international standard for region codes that defines the European Union?

What is the ISO code for the EU? EU – Refers to European Union and reserved at the request of ISO 4217/MA (March 1998) for ISO 6166, Securities – International securities identification numbering system (ISIN). What is the meaning of ISO 3166 country code? ISO 3166 is a standard published by the International Organization for

QGIS removed after updating to 2.18.5 on ubuntu

How do I run QGIS on Ubuntu? 2.3. Installation in Ubuntu Linux¶ QGIS download and installation¶ Open a terminal and type: sudo apt-get update. Semi-Automatic Classification Plugin installation¶ Run QGIS 2; Configuration of the plugin¶ Now, the Semi-Automatic Classification Plugin is installed and a dock and a toolbar should be added to QGIS. Where is

How to create nodata area in a multiband raster?

How do I fill no data in ArcGIS? You can convert no data to zero by using the “Reclassify Tool”. This tool also requires the spatial analyst extension in ArcGIS. This tool allows you to change old raster values to new raster values. The best part is that you can reclassify a range of values. 

How to apply svg symbols as point markers in QGIS 2.0

How do I add SVG symbols to Qgis? It is possible to embed SVG symbols directly within a QGIS projects.Custom SVG symbols Choose the layer which will support SVG symbology and open its properties dialog. Open the section Symbology in :menuselection: Properties –> Symbology . In the Symbol Layer Panel choose Simple marker. How do

GIS Development Trends

What are the major trends in GIS? The advent of 3D analytics, the integration of interior and exterior space mapping, real time and big data analytics, enterprise and web GIS, and artificial intelligence and machine learning are 5 trends that are rapidly transforming the landscape of GIS.  What is new in GIS 2022? 2022 will

Opening .apr file in ArcGIS for Desktop?

How do I open an APR file in ArcGIS? Q: What are APR files and how do I use them? In ArcMap, click on Customize > Customize Mode > Commands. Type “Import from ArcView project” and select that command. Click and drag the command onto any toolbar in ArcMap. Click Close. Click on Import from

Finding duplicates of same point in feature class and only keep maximum of field using ArcPy?

How do I find duplicate features in ArcGIS? Finding duplicate geometry 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 Duplicate Geometry Checks, then click Duplicate Geometry Check. How do I find

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