Maptitude - http://research.umbc.edu/~roswell/maptitude.html
My favorite applications, with a nice distance formula in an excel
spreadsheet can be found at
www.gpswaypoints.co.za
(Click on "Coordinate related calculations")
This is a very nice, but be careful that you've got the right final units.
There are miles, and then there are miles.... (statute and nautical)
See this for any sort of conversions
http://liftoff.msfc.nasa.gov/academy/rocket_sci/convert.html
Some other distance-related resources:
http://www.census.gov/geo/www/gis-faq.txt
http://www.xylem.demon.co.uk/kepler/astrofnc.html#twig01
http://www.auslig.gov.au/geodesy/datums/calcs.htm
http://www.best.com/~williams/avform.html
On Fri, 9 Mar 2001, Reinaldo Paul Perez Machado wrote:
> Maptitude - http://research.umbc.edu/~roswell/maptitude.html
>
> Giovanni:
>
> Thanks a lot. But I placed the problem wrongly, I did not understand what
> my programer was asking me. We need a way to make the same operation in
> Visual Basic, that is, we need to know an equation able to calculate the
> distance in Metric system in a map whose coordinates are in Lat/Lon,
> inside a dumb and silly CAD system, not inside Maptitude. Can you help?
>
> Thanks,
>
> Reinaldo
>
>
> Giovanni Flammia wrote:
> Maptitude -
> http://research.umbc.edu/~roswell/maptitude.html// Hello: //
> Here is a GISDK code snippet that should do the job // Get
> the current map units, whatever they arecurrent_map_units =
> GetMapUnits("Plural") // Set the current map units to
> "Meters"SetMapUnits("Meters") // Assuming p1coord and p2coord
> are GISDK coord objectsdistance =
> GetDistance(p1coord,p2coord) ShowMessage("Distance: " +
> RealToString(distance) + " meters.") // Reset the current map
> unitsSetMapUnits(current_map_units) // Giovanni
> ----- Original Message -----
> From: Reinaldo Paul Perez Machado
> To: Maptitude Discussion List
> Sent: Friday, March 09, 2001 7:05 AM
> Subject: [Maptitude] Distances in Lon/Lat using meters.
> Maptitude - http://research.umbc.edu/~roswell/maptitude.html
>
> Hi all:
>
> Please, some help is required. We need to obtain the distance
> between to
> points in Maptitude, using the GISDK function
> GetDistance(p1,p2).
> Somebody can provide a detailed example of the use of this
> function?
> What is required is just the distance in meters, using
> geographic
> coordinates.
>
> Thanks, in advance, for your collaboration. Best regards,
>
> Reinaldo
>
>
>
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_________________________________________________________
Marjorie Roswell, Spatial Analyst
UMBC Center for Health Program Development and Management
1000 Hilltop Circle Fx: (410)455-6850
Baltimore, MD 21250 E: [EMAIL PROTECTED]
Ph: (410)455-6802 http://umbc.edu/~roswell/mipage.html
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