on November 9, 2023
Unlocking the Power of High-Resolution Georeferenced Population Data: A Game-Changer for Earth Science and GIS Analysis
Geographic Information SystemsIntroduction to high-resolution georeferenced population data High-resolution georeferenced population data are a critical component of modern geographic information systems (GIS) and earth science research. It provides valuable insights into human population distribution, density, and demographic characteristics at fine spatial scales, enabling researchers, policymakers, and organizations to make informed decisions and develop effective strategies. This article
on October 14, 2023
Converting SRTM to XYZ, ORD, and GRD: Essential Techniques for Earth Science and GIS Applications
Geographic Information SystemsConverting .SRTM to XYZ, ORD, GRD: A Comprehensive Guide The Shuttle Radar Topography Mission (SRTM) dataset is a valuable source of accurate elevation data for the Geographic Information Systems (GIS) and Earth Science communities. However, SRTM data are typically provided as Digital Elevation Models (DEMs) in the .SRTM file format, which may not be directly
on August 16, 2023
Rainfall Anomaly Index using satellite data
Geographic Information SystemsAnalyzing the Rainfall Anomaly Index with Satellite Data: A GIS Approach small FAQs 1. What is the Rainfall Anomaly Index (RAI) and what does it measure? The Rainfall Anomaly Index (RAI) is a tool used in Earth science and GIS to assess and quantify deviations in precipitation patterns from the long-term average. It measures the
on February 25, 2023
SQL Server to Google Maps
Geographic Information SystemsHow to migrate SQL Server to GCP? (1) Login to GCP console and navigate to SQL option on the left side menu. (2) Start creating a new instance of Cloud SQL by clicking on “CREATE INSTANCE” button. (3) Choose “SQL Server” option by clicking on the option “Choose SQL Server”. How do I connect SQL
on February 25, 2023
Stereo-pair Image Registration
Geographic Information SystemsWhat is a stereo pair of images? A stereo-pair image contains two views of a scene side by side. One of the views is intended for the left eye and the other for the right eye. These images are sometimes viewed with special equipment to direct each eye on to its intended target, but they
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