2 messages.-------------------------------------Johnnie
 
 
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    : Fri, 16 Jun 95 16:19:10 EDT
    : [log in to unmask] (Gerald I. Evenden)
       : Re:  map projection question
 
>    :         Fri, 16 Jun 1995 14:45:35 EDT
>    : SUSAN GOODMAN <[log in to unmask]>
>       :      map projection question
>  : Multiple recipients of list MAPS-L <[log in to unmask]>
>
>----------------------------Original message----------------------------
>I don't know if this is a map projection or not.  A graduate student wants
>to find a world map shown on gores.  The only example we could find was
>a small illustration in The Times Atlas of the World (1983 ed).  We have
>looked in various cartography books, books on map projections and other
>atlases - no luck.
>Is this an actual map projection?  If so, what is the name?  She would like
>to either purchase a copy of the map or get a photocopy as long as the copy
>is at least 11x17.
>Many thanks in advance.
>Susan Goodman
>[log in to unmask]
 
Do you mean interrupted maps, that is, maps that are not plotted as
a contiguous area?  For example, a common interrupted map is Goode's
Homolosinusoidal (obviously seen in Goode's World Atlas-Rand McNally).
Occasionally, the sinusoidal projection is intrupted like an orange
peal which, IMHO, could be called gores.  There are several interrupted
projections in Snyder/Voxland's "Album of Map Projections."
 
Often an interupted map is given a new name even though is is merely
an operation of interrupting an existing projection.
 
Gerald (Jerry) I. Evenden   Internet: [log in to unmask]
voice: (508)563-6766          Postal: P.O. Box 1027
  fax: (508)457-2310                  N.Falmouth, MA 02556-1027
 
 
 
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    : Fri, 16 Jun 1995 16:35:50 -0400
    : [log in to unmask] (Frank Partridge)
       : Re: gore map projection
 
 
Subject: map projection question
SUSAN GOODMAN <[log in to unmask]> wrote:
I don't know if this is a map projection or not.  A graduate student wants
to find a world map shown on gores.  The only example we could find was
a small illustration in The Times Atlas of the World (1983 ed).  We have
looked in various cartography books, books on map projections and other
atlases - no luck.
Is this an actual map projection?  If so, what is the name?  She would like
to either purchase a copy of the map or get a photocopy as long as the copy
is at least 11x17.
Susan Goodman
[log in to unmask]
 
I do remember there was an article at least two years ago in Geographic
Information Systems about gores; alas, I saved it out of interest, but it is
stratified in my inter-move storage.  Maybe Denny Parker remembers it.
 
A "gore" is a mathematical shape somewhat like the spinnaker of a sailboat.  I
suppose any surface at all could be used for a map projection.  My question is,
"Why does the grad student want an off-the-wall projection?"
 
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