Category Archives: map making

Reference Datum of Earth

Posted on August 18, 2008 by Rashid Faridi

A reference datum is a known and constant surface which can be used to describe the location of unknown points. On Earth, the normal reference datum is sea level. On other planets, such as the Moon or Mars, the datum … Continue reading →

Posted in earth, map making, Remote Sensing 101, Solar System | 3 Comments

Maps of Ancient India

Posted on July 31, 2008 by Rashid Faridi

One of my readers asked faor the map of ancient india. Here are maps and links. The history of India is shrouded in antiquity. The country has been thought of as a nation of philosophers with a well-developed and even … Continue reading →

Posted in Countries, map making | 7 Comments

Mercator’s Projection

Posted on April 22, 2008 by Rashid Faridi

The Mercator projection was invented by Gerardus Mercator, a Flemish mapmaker. His name is a latinized version of Gerhard Kramer. This is his famous world map of 1569. A modern Mercator projection map The property of the Mercator projection map … Continue reading →

Posted in Geographers, Geography Practicals/Lab and Statistical Techniques, map making, oceans | 3 Comments

Why are map projections an issue in GIS?

Posted on March 13, 2008 by Rashid Faridi

In many respects, GIS has freed us from the constraints of modelling the spatial relationships using a drawing on paper. For example: * Easy customizing of what features are displayed and how they look. * attachment of database attributes to … Continue reading →

Posted in GIS, map making | 1 Comment