Friday, 23 March 2012

My Piece About Survey Of India Maps

Hello people! I wrote something on a web address and am not sure if it would come. So it is here!
The web address is
And my piece is
Very interesting information on this blog. Ok I pulled out certain Survey Of India Maps with me and I noticed that they have been drawn (realistically?) by projecting orthographically the curvature of the earth on a (2D plane) piece of paper. So there is no ambiguity there. There is no manipulation there! Way To Go Survey Of India! Toot Toot! :-) Another thing that I must mention is that they must have considered (I believe or should I suspect!) the 2D plane (on which projections taken) to be perpendicular to the portion of the earth whose map is made. Once again I am sure that they take a reference point on the place (whose map being made) to which this plane is perpendicular. Or is it that they do exactly as is written on this blog that ‘something has to go’. If this is the case then they must have in place also a system or method of documenting this focal point or reference point. Have you understood? It’s not too difficult. Close your eyes and think. Maybe read again! :-) If something has to go, then I believe that their maps are made by a competent level of professionalism since Survey Of India Maps are realistic, aren’t they? Fudging or making information (land features) disappear constantly is not easy, at least not for somebody like me. Any information on this is going to be gulped down eagerly. Survey Of India folks should also write here.
I’ve noticed that their TOPO maps show the lines from top to bottom (longitude) to be straight but not at 90 degrees and they all vary (the angles). So that is correct representation. Cool. Also, the lines from left to right (latitude) are not horizontal but curved (with the bulge downwards) since India is north of Equator. Cool again. So maybe no fudging actually. Wow!, but dunno (about the fudging).
Another point: The country we call India and the surroundings was actually a large chunk of land which got crashed into the larger mass of land and that is how the Himalayas got formed and I believe the push is still on and that is why there are earthquakes. Am right?
Thanks. By the way, I made Tripodot. Visit and tell what you think. Would it not be a super idea to include the maps of the entire localities of the globe. That is the intent too. Bye. . . . .
The author of the original blog post mentions about Mercator Map, Peters Map, Robinson Projection, Winkel Tripel Projection.

Hmm, let's see what folks are sharing about cartography.
Cartography Despatches

And here is what people are buzzing about mapping.

Map Talk

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