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*Subject*: Re: 6-1-75-6 W5M --> LOCAL GRID*From*: Ben Tupper <pemaquidriver(at)tidewater.net>*Date*: Thu, 29 Mar 2001 13:01:52 -0500*Newsgroups*: comp.lang.idl-pvwave*Organization*: http://extra.newsguy.com*References*: <99mg2e$t7u$1@news3.cadvision.com> <3AC09909.5241880A@bigelow.org> <99rsai$no4$1@news3.cadvision.com>*Xref*: news.doit.wisc.edu comp.lang.idl-pvwave:24249

Hello, Please find an attached zipped collection of rotuines that convert from LL (decimal degrees)to UTM (meters) and back. I am always interested in comments and suggestions. Ben Mark Chan wrote: > Ben, > > Could you point me to the site where I may find out more about the > conversion porgram that you mention? > > As per Martin Trobec's posted reply, there seems to be a program one can > buy. However, I will like to see if the conversion program you mention will > do the job or not. > > Thanks, > MC > > "Ben Tupper" <btupper@bigelow.org> wrote in message > 3AC09909.5241880A@bigelow.org">news:3AC09909.5241880A@bigelow.org... > > Hi Mark, > > > > I have not heard of such a system of conversions,... but, it's not clear > > to me what the 'land' coordinates of points A, B and C mean. There is > > code to convert between Lon/Lat in decimal degrees to UTM coords in > > meters. From the UTM coordinate system you can then get relative > > range/azimuth values between the points. You might even be able to > > translate the UTM coords to the Canadian equivalent of the US State > > Plane coordinate systems. > > > > Perhaps you could provide more details about these coordinate systems. > > > > Ben > > > > Mark Chan wrote: > > > > > > GIVEN: > > > Point A @ 6-1-75-6 W5M (Take this to be the origin. Some where in > Canada). > > > Point B @ 1-1-75-6 W5M > > > Point C @ 16-1-75-6 W5M > > > > > > QUESTIONS TO BE ANSWERED: > > > What is the distance between A and B? > > > Ans: B is 5 miles east of A. > > > > > > What is the distance between A and C? > > > Ans: sqrt(5^2+5^2). C is NE of A. > > > > > > Etc. calculation like these. > > > > > > QUESTION FOR IDL EXPERTS: > > > Is there a public domain IDL routine to do the conversion between the > land > > > system above to local coordinate? > > > > > > Thanks in advance, > > > Mark Chan > > > > -- > > Ben Tupper > > Bigelow Laboratory for Ocean Sciences > > 180 McKown Point Rd. > > W. Boothbay Harbor, ME 04575 > > btupper@bigelow.org -- Ben Tupper 248 Lower Round Pond Road POB 106 Bristol, ME 04539 Tel: (207) 563-1048 Email: PemaquidRiver@tidewater.net

**References**:**6-1-75-6 W5M --> LOCAL GRID***From:*Mark Chan

**Re: 6-1-75-6 W5M --> LOCAL GRID***From:*Ben Tupper

**Re: 6-1-75-6 W5M --> LOCAL GRID***From:*Mark Chan

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