Fundamentals On OSM

As, my mentor suggested me to concentrate more on the fundamentals of the OSM and record the flow of things going on in order to solve your error(i.e. not getting map on browser). So, today I share with you the fruitful things I learned while searching upon this.

Here we will start ->

Rendering

The process of rendering a map generally means taking raw geospatial data and making a visual map from it.

Raster

Geo loosely means ‘the Earth’, as in geography or geochemistry. Spatial refers to ‘in space’, meaning anything that can be represented in terms of position, coordinates etc.

Geographic Information Systems (GIS)

 GIS is a computer system for capturing, storing, checking, and displaying data related to positions on Earth’s surface. GIS can show many different kinds of data on one map. This enables people to more easily see, analyze, and understand patterns and relationships

The Global Positioning System (GPS) is a space-based navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites.

There are different layers like Standard, Cycle Map, Transport Map, Humanitarain showing different rendering styles. There are several layers created using Mapnik software including the default ‘Standard’ layer.

psql means  PostgreSQL interactive terminal

Command

create extention postgis;

The core postgis extension installs PostGIS geometry, geography, raster, spatial_ref_sys and all the functions.

Today, I searched a new term QGIS.

QGIS (previously also known as Quantum GIS) is a free (GNU GPL v2) and open source GIS application enabling the user to visualize, manage, edit, analyse data, and compose printable maps. It runs on Linux, Unix, Mac OSX, Windows and Android and can be downloaded free of charge from qgis.org.

 sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable

sudo apt-get install qgis

I will update in my next blog why and how to use it.

Stay tuned:)

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