topic Re: simple operations with Latitude and Longitude coordinates in Mathcad

simple operations with Latitude and Longitude coordinates

ccattaneo — Thu, 03 May 2018 13:57:15 GMT

I am discovering that in Prime 3.1 there is not the possibility to manage ( or at least I have not been able ) East and North geographical coordinatesexample : East01 = 12° 20' 30" , North01 = 44° 14' 28"I found only the measure unit of " ° " but not

Re: simple operations with Latitude and Longitude coordinates

LucMeekes — Sun, 01 Jan 2017 14:34:38 GMT

Maybe this will help you: Astronomical Formulas.

It was written for Mathcad 2001, so it should open in Mathcad 15 (which you should have, if you have a full license of Prime 3.1).

Success!

Luc

Re: simple operations with Latitude and Longitude coordinates

LucMeekes — Sun, 01 Jan 2017 14:52:25 GMT

Note that, while you can do:

in Prime, to actually work with the ' and " symbols is quite cumbersome.

In Mathcad you can do similar, with comparable difficulty of entering the symbols:

Success!
Luc

Re: simple operations with Latitude and Longitude coordinates

ccattaneo — Sun, 01 Jan 2017 20:08:13 GMT

your solution is right if you consider a value ( for example ) 22° 21' 30" like an angular value .

I want treat instead as coordinate East ( Longitude ) and North ( Latitude ) < for North emisphere >

read this article Units of Longitude and Latitude - Basic Coordinates and Seasons - NAAP

Re: simple operations with Latitude and Longitude coordinates

Werner_E — Sun, 01 Jan 2017 23:26:34 GMT

Claudio Cattaneo wrote:

your solution is right if you consider a value ( for example ) 22° 21' 30" like an angular value .

I want treat instead as coordinate East ( Longitude ) and North ( Latitude ) < for North emisphere >

read this article Units of Longitude and Latitude - Basic Coordinates and Seasons - NAAP

I don't understand your answer. You asked that you did not find ' and " and Luc showed you a way to implement them (as they are not yet implemented in Prime).

And Longitude and Latitude ARE angular values, what else? And 22°21'30" = 22,3583333°, no matter if North, South, East or West!

Here are a few examples of how you could use Lucs suggestion or the built-in DMS function.

You may even write your own conversion routine, maybe using the data format you would have to provide for the built.in hhmmss function.

You will have to decide which data format for your coordinates you would like to use for your further calculations and then write the appropriate conversion and other functions you need.

Re: simple operations with Latitude and Longitude coordinates

ValeryOchkov — Mon, 02 Jan 2017 06:34:04 GMT

One Web-Mathcad-Sheet on my server with deg, min and sec

http://twt.mpei.ac.ru/MCS/Worksheets/Earth-D-L.xmcd

Or as a picture

It is a solution of the problem

More http://twt.mpei.ac.ru/ochkov/SPB-Moscow-Train.pdf

Re: simple operations with Latitude and Longitude coordinates

Fred_Kohlhepp — Tue, 03 Jan 2017 13:13:35 GMT

Prime 3.0 has a DMS unit:

Re: simple operations with Latitude and Longitude coordinates

Werner_E — Tue, 03 Jan 2017 14:45:10 GMT

Fred Kohlhepp wrote:

Prime 3.0 has a DMS unit:

Yes, and it can also be used the other way round, either in postfix notation or in usual function notation.

See my examples above from 02.01.2017 14:00 (or whatever time you will see, not sure if its localized) Re: simple operations with Latitude and Longitude coordinates

Lets see if Claudio is still interested.