on February 25, 2023
Extracting Lat/Lng from Shapefile using OGR2OGR/GDAL
Geographic Information SystemsHow do I extract coordinates from a shapefile? Export coordinates Click the Export button in the Coordinate Conversion pane. Click the button for the format to which to export the collected coordinates—this could be feature class, shapefile, KMZ, or CSV—and click OK. Browse to the location where you want to store the output and click
on February 25, 2023
Constructing query in Nominatim
Geographic Information SystemsHow to install Nominatim? Building Nominatim Create the directory and change into it. Nominatim installs itself into /usr/local per default. To choose a different installation directory add -DCMAKE_INSTALL_PREFIX=<install root> to the cmake command. Make sure that the bin directory is available in your path in that case, e.g. Is nominatim API free? Search queries. The
on February 25, 2023
In Ogr2OGR: what is SRS?
Geographic Information SystemsSRSSRSA spatial reference system (SRS) or coordinate reference system (CRS) is a framework used to precisely measure locations on the surface of the Earth as coordinates. It is thus the application of the abstract mathematics of coordinate systems and analytic geometry to geographic space. What are the functions of ogr2ogr? ogr2ogr can be used to
on February 25, 2023
Identifying port numbers for ArcGIS Online Basemap?
Geographic Information SystemsWhat ports does ArcGIS online use? Portal for ArcGIS uses the HTTP port 7080 and HTTPS port 7443 to communicate. By default, the portal enforces the use of HTTPS to encrypt communication; port 7080 is not used unless you change these settings to allow communication through HTTP as well. How do I connect Basemap to
on February 24, 2023
Remove unwanted regions from map data QGIS
Geographic Information SystemsHow do I delete part of a map in Qgis? Let’s get started! Import the spatial data to QGIS. To create a selection with an expression, first open your dataset in QGIS. Creating a selection to delete information outside our area of interest. From the toolbar at the top, click on the expression icon and
on February 24, 2023
Waiting for Vector & WFS loading
Geographic Information SystemsHow can I download vectors for free? Vector.me Vector.me has a lot of free vectors. Simply enter your keywords, hit search and browse until you find what you’re looking for. You can search through illustration vectors, logos and icons and there’s more than 280,000 to choose from all in AI, EPS, SVG and CDR formats.
on February 24, 2023
Adding TravelTime as Impedance in ArcGIS Network Analyst?
Geographic Information SystemsHow is impedance chosen while selecting the shortest route? If the impedance is a time attribute with live or historical traffic, then the best route is the quickest route for a given time of day and date. Hence, the best route can be defined as the route that has the lowest impedance, or least cost,
on February 24, 2023
Listing total number of features into an ArcGIS Online feature pop-up
Geographic Information SystemsHow do I show feature count in ArcGIS online? On the main menu, click Customize > Toolbars > Data Reviewer. On the Data Reviewer toolbar, click Data Reviewer > Total Feature Count. The Total Feature Count window appears. How do I show related records in the popup in ArcGIS online? Clicking the Show all button
on February 24, 2023
Criteria for cartographic capacity
Geographic Information SystemsWhat are the five principles of cartographic design? Five primary design principles for cartography Cartographers apply many design principles when compiling their maps and constructing page layouts. Five of the main design principles are legibility, visual contrast, figure-ground organization, hierarchical organization, and balance. What are the basic principles of cartographic classification? Five of the main
on February 24, 2023
Tile large raster file in QGIS
Geographic Information SystemsHow do I combine raster tiles in QGIS? QGIS: Raster Merging In the QGIS Browser Panel, select the GeoTiffs you want to merge and right click to add them to the main window. Select Raster > Miscellaneous > Merge. In the Merge dialogue window, for Input files, browse to your directory containing your GeoTiff tiles.