Rank: 2646 based on 49 downloads (last 30 days) and 4 files submitted
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Alain Barraud

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Professor at University
Process control
Computer science

Professional Interests:
Dynamical Modelization,quaternion attitude estimation

 

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Files Posted by Alain View all
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10 Apr 2009 Nlsqbnd Non linear Leasr Squares Solver with box constraints/ Author: Alain Barraud non linear least squa..., hybrid technique, bounds constraints, qr factorization 10 2
23 Mar 2009 magnetometers calibration MgnCalibration performs magnetometer calibration from a measurements data set. Author: Alain Barraud calibration, magnetometer measurem..., attitude computation 32 2
23 Mar 2009 writing fortran mex file fortran mex file which call user matlab function with varargin argument. Author: Alain Barraud fortran mex file, varargin structure, fortran write 3 0
05 Mar 2009 Sum benchmark Compute set of real values to be summed with an a priori known sum and specified condition number Author: Alain Barraud linear algebra, sum computation, full precision comput... 4 0
Comments and Ratings by Alain
Updated File Comments Rating
23 Mar 2009 Variable Precision Integer Arithmetic Arithmetic with integers of fully arbitrary size. Arrays and vectors of vpi numbers are supported. Author: John D'Errico

vpi is an excellent toolbox, thanks a lot.
I shoud add a comment to derek O Coonor question. I have found 4.661273948537807e-005 as the mean of the data in "etaana" without any toolbox just using floating poitn computation within Matlab. I have used a function I have written some years ago which computes full precision sums of any condition number (here 1.5e17) in a very simple and efficient way.

Comments and Ratings on Alain's Files View all
Updated File Comment by Comments Rating
26 Sep 2011 Nlsqbnd Non linear Leasr Squares Solver with box constraints/ Author: Alain Barraud Fares

The mex files are compiled for 32 and 64 bit windows. What operating system is your MATLAB distribution installed on?

27 Jul 2011 Nlsqbnd Non linear Leasr Squares Solver with box constraints/ Author: Alain Barraud Middleton

can you please suggest why I get the error

??? Undefined function or method 'elsunc' for input arguments of type 'function_handle'.

Error in ==> Nlsqbnd.nlsqbnd at 221
[x,f,exitflag,output,cov]=elsunc(func,x,bl,bu,W,C,varargin{:});

is it a problem accessing the elsunc.mexw64 file? I can't view it.

Thanks.

07 Dec 2010 magnetometers calibration MgnCalibration performs magnetometer calibration from a measurements data set. Author: Alain Barraud Christopher

....and a reply to the comment...
Merayo, J M G "Reply to comment on ‘Scalar calibration
of vector magnetometers’ by
VGSemenov", Meas.Sci.Technol. 14 (2003) 238

07 Dec 2010 magnetometers calibration MgnCalibration performs magnetometer calibration from a measurements data set. Author: Alain Barraud Christopher

V G Semenov published a correct to the Merayo paper. Not sure if it has any bearing on the code here?
V G Semenov "Comment on ‘Scalar calibration of vector
magnetometers’" Meas. Sci. Technol. 14 (2003) 235–237.

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