Hello all,
Here is the documentation on the Marc *034* field for the coordinates.
They seem to all use leading zeroes so that there is a consistency in the
number of digits used for all of the W, E, S, N values. This is no doubt
for ease of machine manipulation.

But I do remember when I input the *255 values*, I did not always include
leading zeroes; I made sure that all of the values had the same number of
digits, though.

So I think I agree with Tim.

Cheers, and Happy New Year!

Louise Ratliff
Retired UCLA map cataloger

*$g - Coordinates - southernmost latitude*

Subfields $d, $e, $f, and $g individually identify the four coordinates of
the item. Subfield $d represents the westernmost extent of the item;
subfield $e, the easternmost extent; subfield $f, the northernmost extent;
and subfield $g, the southernmost extent. The abbreviations for the
hemispheres are: *N = North, S = South, E = East, W = West*.

Subfields $d, $e, $f, and $g always appear together. The coordinates may be
recorded in the form *hdddmmss* (hemisphere-degrees-minutes-seconds),
however, other forms are also allowed, such as decimal degrees. The
subelements are each right justified and unused positions contain zeros.

Examples in *degrees/minutes/seconds*: *hdddmmss*
 (hemisphere-degrees-minutes-seconds):
*034* *1#**$a*a*$b*22000000*$d*W1800000*$e*E1800000*$f*N0840000*$g*S0700000
*034* *1#**$a*a*$b*253440*$d*E0790000*$e*E0860000*$f*N0200000*$g*N0120000
*[The above two examples illustrate records for flat maps or flat maps in
atlases.]*

Example in *decimal degrees*: *hddd.dddddd* (hemisphere-degrees.decimal
degrees):
*034* *1#**$a*a*$d*E079.533265*$e*E086.216635*$f*S012.583377*$g*S020.419532

Example in *decimal degrees*: *+-ddd.dddddd* (hemisphere[+/-]-degrees.decimal
degrees) (“+” for N and E, “-“ for S and W; the plus sign is optional):
*034* *1#**$a*a*$d*+079.533265*$e*+086.216635*$f*-012.583377*$g*-020.419532

Example without the optional plus sign:
*034* *1#**$a*a*$d*079.533265*$e*086.216635*$f*-012.583377*$g*-020.419532

Example in *decimal minutes*: *hdddmm.mmmm* (hemisphere-degrees-minutes.decimal
minutes):
*034* *1#**$a*a*$d*E07932.5332*$e*E08607.4478*$f*S01235.5421*$g*S02028.9704

Example in *decimal seconds*: *hdddmmss.sss*
(hemisphere-degrees-minutes-seconds.decimal
seconds):
*034* *1#**$a*a*$d*E0793235.575*$e*E0860727.350*$f*S0123536.895*$g*
S0202858.125

If the coordinates are given in terms of a center point rather than outside
limits, the longitude and latitude which form the central axis are recorded
twice (in subfields $d and $e and in $f and $g, respectively).
*034* *1#**$a*a*$b*75000*$d*W0950500*$e*W0950500*$f*N0303000*$g*N0303000
*034* *1#**$a*a*$d*W119.697222*$e*W119.697222*$f*N034.420833*$g*N034.420833
*034* *1#**$a*a*$d*-119.697222*$e*-119.697222*$f*+034.420833*$g*+034.420833
*034* *1#**$a*a*$d*W11941.833333*$e*W11941.833333*$f*N03425.250000*$g*
N03425.250000
*034* *0#**$d*W0735848*$e*W0735848*$f*N0404554*$g*N0404554
*[Coordinates of Carnegie Hall, a concert venue depicted in an image.]*


On Mon, Dec 20, 2021 at 7:57 AM Angela R Cope <[log in to unmask]> wrote:

> Extent Update
>
> 1) The base map choices have been added (lower right)
>
> 2) Can anyone look at the MARC layouts in Extent and give feedback? Do any
> of the formats require  MARC leading zeros?
>
> 3) Coordinates must be entered in order of W, E, N ,S to validate, so
> something like -100,-90,36,28 (when you click on "coordinates," the search
> button says not valid but once you enter in coordinates such as this
> example, the buttons refreshes to valid)
>
> Anything else??
>
>
> Angie
>