MAPOLOGY : GIS,Remote Sensing and Image Processing Tutorials

Attribute Table Pre-requisites Attribute Table is a table where georeferenced data is stored for retrieval through geo-database. The data stored in the attribute table is used for the preparation of maps or geodatabases. When a shapefile is created a table can be connected to this file where relevant and related data of that feature can be stored. This data can be later used as a geodatabase or to create choropleth maps or any other related geospatial documents. To create an attribute table at-first shapefile needed to be created. There are three types of shapefiles: Point, Polyline, and Polygon shapefiles. Pont is created to digitize the location of a city, building, tourist spot, etc. Polyline shapefile is used to digitize rivers, canals, roads, rail lines, etc. Polygon is used to represent lakes, water bodies, watersheds, etc. Under each shapefiles, there can be many shape attributes. Normally for same kind of geographical features single shapefile is created. For river bodies in a ...

Map Window 5 is an open-source GIS software that has the capability to digitize maps, create a geodatabase, convert raster to vector, interactive maps, georeferencing of images, etc. The current tutorial demo the way you can create an attribute table with the help of MapWindow 5. The above three images depict the procedure to create an attribute table to store data into shapefiles which can be used for the creation of interactive or informative maps. The pdf version can be downloaded from here . Or Watch the YouTube Video here . This is an excerpt from the tutorial on GIS and Remote sensing available for Rs.70 at Instamojo . Click this link to subscribe .

Any paper maps can be converted into the digitized data-driven interactive geospatial application by following the five steps as given below : 1) Scan the map into TIF 2) Import into DIVA-GIS 3) Create shapefiles for Placemarks, Pipelines or Roads or River and Some Area like Ponds, lakes, stadiums, etc. 4) Create Attribute Tables linked to the shapefiles 5) Export the tables and the shapefiles into an AppConverter to produce interactive Geospatial Application The entire procedure or the steps of digitization of maps by DIVA-GIS is explained in the presentation that can be accessed by clicking in the link . or view the video about the same presentation. If any terms like shapefile or attribute table are not clear or known to you then see this presentation . Founding and Honorary Editor Innovative for Sustainability http://www.baipatra.ws The Water, Energy and Informatics Group

Terminology and Basic Questions About GIS from Mrinmoy Majumder This PPT is from one of my old slideshare post which has been downloaded more than 15000 times.You may download this to brush up your knowledge about GIS. For more such links visit http://www.baipatra.ws  Signing off, Founding and Honorary Editor Innovate for Sustainability

Penstock carries the water from source to power house for generation of hydro power. The network of penstock and its health is required to be monitored. Real time monitoring systems and controlling of water flow through the penstock is important for maintaining the desired plant capacity of a hydro power plant. Digitization of the pen stock by GIS is the first step of this project. View it in Baipatra . After digitization the shape files can be used in any platform along with a condition monitoring model for proper maintenance of the "arteries" of the power plant. Happy GISing :) Regards, Admin,Baipatra http://www.baipatra.ws

Some free but useful software for working in GIS projects are : MapWindow GIS,Quantum GIS etc. The steps for creating a Geo-referenced and informative spatial database( or database linked to spatial points) is the following : a)Selection of Coordinate System b)Creating shape-files(line for digitizing road,rivers etc;polygon for digitizing water bodies,plantations etc. and points for indicating cities,places etc.)  c)Creating the attribute tables linked to the shape-files where columns represents different attributes and rows represents the sub-shapes representing different features of same shape(artificial ponds can be digitized with polygon shape-files and each pond can be digitized within single shape-file where each sub-shape will describe that kind of pond only)  d)After relevant informations are entered into the attribute tables data-sets can be represented with the help of different colours or degree of colours or different styles. Each of the a...