KML or Keyhole Markup Language is a collection of geospatial data on map and commonly used in Google Earth or google services. TIFF (also known as Tagged Image File Format) is a file format for transferring, storing, and displaying raster images. Scanned aerial photography and maps, as well as digital satellite imagery and other geographic … Continue reading “Convert KML to TopoJSON”
Shapefile is a vector data format for storing geographical data and associated attribute information. It is developed and regulated by ESRI as open specification for data interoperability among ESRI and other GIS software products. Shapefile can be point, line, or polygon features. TIFF (also known as Tagged Image File Format) is a file format for … Continue reading “Shapefile to GeoTIFF – Vector to Raster Conversion”
Hello GIS learner today in this post we are introducing term Map matching is the linking or matching of observed raw GPS signals shown in below image with green color points with the road segments which the GPS signals actually corresponds. The coordinates of GPS observations are close to the road map but not exactly … Continue reading “Map Matching”
In Telecommunication ‘tele’ comes from Greek means far off and ‘communication’ means exchange of information using some medium. Location information is elemental for telecommunication and GIS in Telecom is widely accepted. Geographical Information System tools manages and analyzes the location of dp junction, available ports, fiber cables lines on the map that increases efficiency of the system. Locate DP … Continue reading “Locate DP Junctions, Ports, Fiber Cables, Connected Houses – GIS Telecom”
Unsupervised classification is based on software analysis. It uses computer techniques for determining the pixels which are related and sort them into classes. In this post we doing unsupervised classification using KMeansClassification in QGIS. For supervised classification check earlier articles. For Beginners check – QGIS Tutorial Unsupervised classification using KMeansClassification in QGIS Add a raster … Continue reading “QGIS Tutorial: Unsupervised classification using KMeansClassification”
Projection is a method to represent 3D data into 2D. It plays a important role in GIS. A map projection is termed as Coordinate Reference System (CRS) and QGIS allows users to define custom CRS. So in this article QGIS Tutorial – Vector Analysis – Create New Projection we will get familiar with creating your own CRS … Continue reading “QGIS Tutorial – Vector Analysis – Create New Projection”
In geometry angles are measured regardless of direction or orientation as in trigonometry we measure angle by rotating anti clockwise. Here x-axis is (0) zero degree and y-axis is at 90 degree. So in this article we get familiar with What is bearing and calculate angle between two points. In GIS bearing angle is used … Continue reading “What is bearing angle and calculate between two Points”
Google Earth a google developed free platform that allows us to view high resolution satellite image of Earth, Moon, Mars and sky. Through Google Earth you can explore the world with satellite imagery. In the previous article we explained how to Download Satellite image for free. A 3D representation with 360 degree view. For GIS … Continue reading “Create a free tour or video in Google Earth Pro”
Howdy Guys, in these days and age of open source society where people no spun out depends on told information maps play a vital role. In this article we are showing a feature of IGIS Map Tool – Create and Share Custom Maps – Add on Website, Social Sites Share. You can share maps for business … Continue reading “Create and Share Custom Maps – Add on Website, Social Sites Share”
QGIS is one of the most common open source application used by GIS analyst, Geographers, Civil Engineers and many other professionals. If you are new in the field of Geographic Information System (GIS) you should consider learning this application, as it will help you to solve many complex problems, analyze area, create reports etc. with … Continue reading “QGIS Tutorial – Quantum GIS Guide”
