For Part-1, Click here ol.View, ol.layer and ol.source are one of the foundations of OpenLayers application. You can not move ahead without understanding them. Let’s understand them with the help of following code. ol.View: It is used to set the view of map. At line number 25 in above code snippet, our map object(defined at …
OpenLayers is an open source mapping JavaScript library which allows developers to develop highly interactive GIS web application. It can displays map tiles(or image) and vector data. In this post, we will create a simple GIS web app which will display OpenStreetMap on it. OpenStreet map is similar to Google Map. We will use a …
Build your First GIS Web App using OpenLayers-Part 1 Read More »
Projections or Map Projections are attempts to portray the 3D surface of the earth or a portion of the earth on flat surface like flat surface or XY plane or Cartesian Plane. The method by which 3D earth surface or curved surface is laid flat to a flat surface or XY plane is known as …
What is GIS ? GIS stands for Geographical Information System(GIS). It is a system for gathering, storing and analysing GIS data. A GIS data is a data which has some location information associated with it. A very simple and popular example is GPS on your smart phone. Through GPS and Satellite, we gather our live location …
Prerequisite: You need to have beginner level knowledge of QGIS and PostGIS to understand this post. QGIS and PostGIS are one of the most famous open source GIS tools in GIS community. QGIS is used for the visualisation and processing of GIS data where as PostGIS is an extension to PostgreSQL database to store GIS …
