For ellipsoidal accuracy:
U.S. Coast & Geodetic Survey Special Publication No. 5 gives the formulae
and tables for all latitudes on the Clarke 1866 ellipsoid. (The formulae
will allow you to compute the same for other ellipsoids to sub-millimeter
accuracy).
For spherical accuracy:
Consider that the equatorial radius is 6,378.137 kilometers and that
longitude varies as the cosine of the latitude.
Good luck!
Clifford J. Mugnier ([EMAIL PROTECTED])
Surveying, Geodesy, & Photogrammetry
Dept. of Civil & Environmental Engineering
LOUISIANA STATE UNIVERSITY
12408 CEBA Building
Baton Rouge, Louisiana 70803
Voice: (225) 388-8536
Facsimilie (225) 388-8652
===================================
----- Original Message -----
From: "Dick Hoskins" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, 15 May, 2000 1:49 PM
Subject: MI Formular for long/lat
> I need a for formula that gives what an increment of 1 degree or 1 second
> or 1 minute (or any other value) of long and lat is in terms of ground
> distance as a function of long and lat. A rule of thumb-type table or
> conversion would be OK.
>
> Dick Hoskins
> [EMAIL PROTECTED]
>
> GIS uses in public health summer course:
> http://healthlinks.washington.edu/inpho/gis/course.html
> ----- Original Message -----
> From: "Tom Brockenbrough" <[EMAIL PROTECTED]>
> Cc: <[EMAIL PROTECTED]>
> Sent: Monday, May 15, 2000 9:35 AM
> Subject: Re: MI Specifying scale of layout
>
>
> > Not sure if this will work because I have not had the need to do so but
> can
> > you go under Map> Options>, change distance units to inches, and then
> change
> > your Map Scale and Layout Scale to obtain what you need?
> >
> > Hope it works.
> >
> > "SenGupta,Georges" wrote:
> >
> > > I need to print off maps from MI at a defined scale. I have not
managed
> to
> > > get the Map->Change View->Map Scale and the Layout->Frame
Object->Scale
> On
> > > Paper options to work together to give me (for example) 1:2500.
> > >
> > > Is there an obvious way that I have missed?
> > >
> > > Thanks for your help. Will sum responses.
> > > ----------------------------------------------------------------------
----------------------------------------------------------------------
To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put
"unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
