-------- Original Message --------
Subject:        Re: Can world maps be centered on varying coordinates
Date:   Fri, 22 Feb 2013 11:52:40 -0500 (EST)
From:   Paige G Andrew <[log in to unmask]>
To:     Air Photo Maps, GIS Forum - Map Librarianship <[log in to unmask]>



Bojana,


If this is a world map the standard set of coordinates are:


(W 180--E 180/N 90--S 90)

even though that is an Anglo-centric view of the world. From there one
can adjust either the latitude or longitudinal coordinates to fit the
circumstances, and most often it is the north and south latitude
coordinates are adjusted because either the top or bottom or both parts
of the world geographically are cut off (or not visible due to the type
of projection used).

Unless this specific map truly does "cut off" much of the earth's
surface longitudinally I am guessing this was a cataloger's error and
they meant W 180--E 180, OR meant to provide the coordinates for the two
poles.

Paige

------------------------------------------------------------------------

*From: *"Angie Cope, American Geographical Society Library, UW
Milwaukee" <[log in to unmask]>
*To: *[log in to unmask]
*Sent: *Friday, February 22, 2013 11:26:12 AM
*Subject: *Can world maps be centered on varying coordinates

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Subject:        Can world maps be centered on varying coordinates
Date:   Fri, 22 Feb 2013 16:21:34 +0000
From:   Skarich, Bojana <[log in to unmask]>
To:     [log in to unmask] <[log in to unmask]>
CC:     Marti, Elida <[log in to unmask]>



Hi All,

I’m a newbie map cataloger and I have a question about world maps
centered on “atypical” coordinates. I have a map:

Chart of limits of seas and oceans (publ. by Aeronautical Chart and
Information Center in 1953).

In a copy record, the left margin longitude is stated as W 90°, and the
right margin longitude is W 90°. (ocm77050953).

Can this be right or is this a cataloging error? Wouldn’t you expect a
world map to have longitudinal coordinates at W 180° degrees and E 180°?
Or is it the case that a world map can be*centered* in any longitude
that better serves the cartographer’s purpose?

Thanks for any feedback you have on this J

Bojana

Bojana Skarich

Non-Print Catalog Librarian

Michigan State University Libraries

366 W. Circle Drive

East Lansing, MI 48824

517-353-9034

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