We also have hoped that the method of expressing coordinates could
become more standardized in MODS; while recognizing the need to
accomodate mapped legacy "statement" data from MARC, we'd like to be
able to describe the n-sided polygon and to specify the format of the
coordinates in an attribute.
We've also wondered whether to go with decimal or degree-minute-second.
Decimal can be expressed with available keyboard characters (if the
degree symbol is omitted), that may be an advantage. The format of
the coordinate expression needs to incorporate hemisphere, otherwise
hemisphere needs to be expressed another way in the element, perhaps as
Technology and Metadata Librarian
Robert W. Woodruff Library, Room 128
Atlanta, Ga. 30322
phone (404) 727-6888
Ray Denenberg, Library of Congress wrote:
[log in to unmask]"
"coordinates" contains a statement of coordinates covered by the
resource. One or more statements may be supplied. If one is supplied, it
is a point (i.e., a single location); if two, it is a line; if more than
two, it is a n-sided polygon where n=number of coordinates assigned. No
three points should be co-linear, and coordinates should be supplied in
We should correct this.
"statement of coordinates" was intended to represent a single point (i.e. a
single pair - latitude and longitude) and looking closely at it, it doesn't
(it seems that it represents a bounding box, i.e. 4-sided polygon). So we
need to change the wording, so that:
" 'coordinates' contains a statement of coordinates covered by the
resource. One or more statements may be supplied."
should be replaced by something along these lines:
" 'coordinates' contains a pair of coordinate representing a single
geographic point. It is repeatable (so one or more points may be
I take it that you want to represent a bounding polygon, arbitrary number
of sides (i.e. not limited to a 4-sided polygon)?
----- Original Message -----
From: "John Banning" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, May 10, 2006 4:37 PM
Subject: [MODS] <coordinate> examples
I was curious if anyone could provide examples of how geographic
coordinates are being represented in MODS. I am specifically interested in
representing bounding coordinates for maps. I read in the user guide that
the information contained in this element is "equivalent to MARC 21 fields
034 and 255" but wanted to know specifically if decimal degree
(34.558889°, 16.253889°) or degree/minute/second (34° 33' 32.00", 16° 15'
14.00") the preferred geographic representation?
Thanks in advance,