Rank: 659 based on 183 downloads (last 30 days) and 1 file submitted
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geodesy, earth sciences, astronomy

 

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31 May 2009 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.92a. Author: Mike Craymer angle, julian, statistics, gps week, optimization, geomatics 183 11
  • 4.625
4.6 | 8 ratings
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24 Feb 2009 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.92a. Author: Mike Craymer

I corrected the bug for vector and array input to function ell2utm per Sebastian Holz's comments and posted a new version 2.91. Unfortunately, the fix only worked for row vectors. I've corrected it again in version 2.92 and tested it this time to make sure it works. Sorry for any problems this may have caused. In addition to error checking, I'll consider adding array input to all functions in the next major release (this Summer I hope).
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16 Oct 2009 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.92a. Author: Mike Craymer Jonathan

Hello,

Thank you for such a useful toolbox! I have a question, however, regarding transforming lat,lon on the WGS84 ellipsoid to local North East Up. If I use the same lat,lon coordinate as both my point to convert and my origin, why would I get a -21.5 km local North value? Shouldn't North and East both be zero?

Thanks again,
Jon

<SNIP>

>> [a,b,e2,finv] = refell('WGS84'); %get ellipsoid params
rlat = deg2rad(40); rlon = deg2rad(-108); %lat,lon
[Xec Yec Zec] = ell2xyz(rlat,rlon,0,a,e2) %convert to ECEF xyz
[N E Up] = ct2lg(Xec,Yec,Zec,rlat,rlon) %convert to local NEU

Xec =
  -1.5119e+06
Yec =
  -4.6532e+06
Zec =
   4.0780e+06

N =
  -2.1054e+04
E =
     0
Up =
   6.3693e+06

</SNIP>
29 Jul 2009 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.92a. Author: Mike Craymer Sepideh

Thanks for that, very useful
24 Feb 2009 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.92a. Author: Mike Craymer Craymer, Mike

I corrected the bug for vector and array input to function ell2utm per Sebastian Holz's comments and posted a new version 2.91. Unfortunately, the fix only worked for row vectors. I've corrected it again in version 2.92 and tested it this time to make sure it works. Sorry for any problems this may have caused. In addition to error checking, I'll consider adding array input to all functions in the next major release (this Summer I hope).
18 Feb 2009 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.92a. Author: Mike Craymer Hölz, Sebastian

There is a potential bug in function ell2UTM, which may lead to wrong results in the calculated northing, if the funciton is called with a vector containing coordinates from both southern and northern hemisphere. Change lines 23-27, which read ...

if lat>=0
  No=0;
else
  No=10000000;
end

to ...

No(size(lat))=0; % False northing (north)
No(lat<0) = 1e7; % False northing (south)

Sebastian
27 Jan 2009 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.92a. Author: Mike Craymer Christopher

under matlab which file do i put this in so that it is being used?
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31 May 2009 Geodetic Toolbox Toolbox for angle, coordinate and date conversions and transformations. Version 2.92a. Author: Mike Craymer angle, julian, statistics, gps week, optimization, geomatics 183 11
  • 4.625
4.6 | 8 ratings
 

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