Rank: 1472 based on 71 downloads (last 30 days) and 3 files submitted
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Antoni J. Canós

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ITACA - Technical University of Valencia

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Files Posted by Antoni J. View all
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05 May 2009 Single-variable linear level finding ("inverse" INTERP1): findX Estimates the XI values at which the dependent variables Y reach a specified level YI. Author: Antoni J. Canós interpolation, find cross, find zeros, level crossing, inverse interp1, approximation 36 3
  • 4.0
4.0 | 2 ratings
13 Dec 2006 Screenshot Fast and Robust Self-Intersections Computes the self-intersections of a curve. Author: Antoni J. Canós self intersect inters... 22 2
  • 5.0
5.0 | 1 rating
17 Dec 2003 polyfit3 Fit polynomial to data, with new features as forced to zero coefficients and data weighting. Author: Antoni J. Canós interpolation, fitting, polynomial fitting, least squares, coefficients, polyfit 13 1
  • 3.0
3.0 | 1 rating
Comments and Ratings by Antoni J.
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13 May 2009 find_cross.m, version 2.1 Find and/or estimate level crossings using a combination of search and interpolation. Author: Phillip M. Feldman

Phillip, please have a look at findX.m (File ID: #23860).
http://www.mathworks.com/matlabcentral/fileexchange/23860

It is based on find_cross.m but with an optimized code, completely vectorized, without the restriction of column vectors and with some new features.
Comments and Ratings on Antoni J.'s Files View all
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14 May 2009 Fast and Robust Self-Intersections Computes the self-intersections of a curve. Author: Antoni J. Canós Beardmore, Robert

It certainly is very good and saved me a lot of bother!!
12 May 2009 Single-variable linear level finding ("inverse" INTERP1): findX Estimates the XI values at which the dependent variables Y reach a specified level YI. Author: Antoni J. Canós Feldman, Phillip M.

Your code is amazingly compact, and I like it better than mine.

I was actually trying to do something slightly different. For discrete-valued sequences, I'd like to be able to exclude cases where the sequence reaches the target level but does not actually cross it. However, this feature of my code appears to not be functioning correctly.
05 May 2009 Single-variable linear level finding ("inverse" INTERP1): findX Estimates the XI values at which the dependent variables Y reach a specified level YI. Author: Antoni J. Canós Rowland, Darren

This file is now much improved, featuring a H1 line and useful descriptions. If I could suggest some areas for minor improvement:
- error checking to ensure inputs are, for instance, not complex,
- if only two inputs are given i.e. no YI, then YI defaults to zero.
22 Apr 2009 Single-variable linear level finding ("inverse" INTERP1): findX Estimates the XI values at which the dependent variables Y reach a specified level YI. Author: Antoni J. Canós Rowland, Darren

The first few lines of this file are

% findX.m
%
% Antoni J. Canós, ITACA Institute - Technical University of Valencia
%
% Based on find_cross.m by
% Phillip M. Feldman, Northrop Grumman Space Technology
% Version 2.0 Nov. 9, 2005
% in http://www.mathworks.com/matlabcentral/fileexchange/8975
% (File ID: #8975)

Features a large number of other poor comments such as
% idx should be a very small array, so we can afford to use a loop

when no loop is present.
24 Jan 2008 Fast and Robust Self-Intersections Computes the self-intersections of a curve. Author: Antoni J. Canós Marks, Joseph

This is really great !!!

And I just needed it, too !!!

THANKS VERY MUCH !!!

Sincerely,
Joseph

Top Tags Applied by Antoni J.
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approximation, interpolation, coefficients, communications, data exploration
Files Tagged by Antoni J. View all
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25 Sep 2009 impedance of shielde microstrip transmission line calculates the impedance and phase velocity in shielded microstrip transmission line. Author: ujwol palanchoke communications 34 0
05 May 2009 Single-variable linear level finding ("inverse" INTERP1): findX Estimates the XI values at which the dependent variables Y reach a specified level YI. Author: Antoni J. Canós interpolation, find cross, find zeros, level crossing, inverse interp1, approximation 36 3
  • 4.0
4.0 | 2 ratings
13 Dec 2006 Screenshot Fast and Robust Self-Intersections Computes the self-intersections of a curve. Author: Antoni J. Canós self intersect inters... 22 2
  • 5.0
5.0 | 1 rating
17 Dec 2003 polyfit3 Fit polynomial to data, with new features as forced to zero coefficients and data weighting. Author: Antoni J. Canós interpolation, fitting, polynomial fitting, least squares, coefficients, polyfit 13 1
  • 3.0
3.0 | 1 rating
 

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