Rank: 554 based on 165 downloads (last 30 days) and 1 file submitted
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geodesy, earth sciences, astronomy

 

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13 Feb 2013 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.97. Author: Mike Craymer gps, geodesy, angle, geomatics, coordinate, gps week 165 26
  • 4.76923
4.8 | 13 ratings
Comments and Ratings by Mike View all
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25 Sep 2011 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.97. Author: Mike Craymer

Re: 23 Jul 2011 post by muhammad faiz pa'suya

Dear Muhammad: The ell2utm function will automatically determine and output the standard UTM zone in which your input coordinates fall. To also have it output the central meridian for the zone(s), change the first line of the ell2utm.m function from

function [N,E,Zone]=ell2utm(lat,lon,a,e2,lcm)
to
function [N,E,Zone,lcm]=ell2utm(lat,lon,a,e2,lcm)

This will be implemented in the next version of the Toolbox. To understand how the zones are determined, see the Wikipedia entry for UTM.

13 Mar 2011 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.97. Author: Mike Craymer

Sorry again! I keep forgetting that the MATLAB File Exchange doesn't like the use of the standard angle brackets enclosing URLs. Here is the clickable URL sans brackets:

http://www.craymer.com/software/matlab/geodetic/

13 Mar 2011 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.97. Author: Mike Craymer

A new version 2.95 of the Geodetic Toolbox is now available. Unfortunately, I am unable upload it to the MATLAB Central File Exchange (keep getting an error). Until the Mathworks resolves the problem, you can find the new version at <http://www.craymer.com/software/matlab/geodetic/>.

Updates include:

- Added new jd2mjd & mjd2jd functions for modified Julian date conversions.
- Modified ct2lg & lg2ct functions to optionally use different lat,lon for each point.
- Corrected use of ell2utm function in ToUTM example script.
- Removed "clear all" in example scripts to avoid clearing user's workspace.
- Modified functions to use GRS80 reference ellipsoid by default.

See Content.m for the full list of changes.

21 Feb 2011 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.97. Author: Mike Craymer

Sorry the URL's in my previous comment did not format correctly. They should have been specified as:

http://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system

http://geographiclib.sourceforge.net/cgi-bin/GeoConvert

21 Feb 2011 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.97. Author: Mike Craymer

Dear Ram,
By default, the ell2utm function uses the standard UTM zone definition where the earth is divided into 60 zones each 6 deg of longitude in width. Zone 1 is bounded by longtiudes 180 deg E and 186 deg E.

<http://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system>

By this definition, Zone 44 is bounded by longitudes 78 deg E and 84 deg E, while Zone 45 is bounded by 84 deg E and 90 deg E. That is, Zone 44 starts at 180+(44-1)*6-360=78. The boundary between Zones 44 and 45 therefore bisects what you call Zone 45R. You can verify this with the on-line version of GeoConvert at

<http://geographiclib.sourceforge.net/cgi-bin/GeoConvert>

In any case, the ell2utm function allows you to specify the central meridian for any non-standard zone definitions. See help ell2utm for more information.

-Mike

Comments and Ratings on Mike's Files View all
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19 Apr 2013 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.97. Author: Mike Craymer wg

really amazing!!!

09 Jan 2013 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.97. Author: Mike Craymer Peng

09 Aug 2012 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.97. Author: Mike Craymer Pavan

Helped a lot, Thanks.

25 Sep 2011 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.97. Author: Mike Craymer Craymer, Mike

Re: 23 Jul 2011 post by muhammad faiz pa'suya

Dear Muhammad: The ell2utm function will automatically determine and output the standard UTM zone in which your input coordinates fall. To also have it output the central meridian for the zone(s), change the first line of the ell2utm.m function from

function [N,E,Zone]=ell2utm(lat,lon,a,e2,lcm)
to
function [N,E,Zone,lcm]=ell2utm(lat,lon,a,e2,lcm)

This will be implemented in the next version of the Toolbox. To understand how the zones are determined, see the Wikipedia entry for UTM.

22 Sep 2011 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.97. Author: Mike Craymer Leong, Shien Kwun

Very useful! Thank you very much.

Top Tags Applied by Mike
aerospace, angle, coordinate, coordinates, date
Files Tagged by Mike
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13 Feb 2013 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.97. Author: Mike Craymer gps, geodesy, angle, geomatics, coordinate, gps week 165 26
  • 4.76923
4.8 | 13 ratings

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