Rank: 3442 based on 9 downloads (last 30 days) and 3 files submitted

Nathan Thern

E-mail: thern@raytheon.com
Company/University: Raytheon
Lat/Long: 33.212597, -96.65414

Personal Profile:: Electrical Engineer at Raytheon Corporation
Professional Interests:

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Files Posted by Nathan				View all 1 - 3 of 3
Updated	File	Tags	Downloads (last 30 days)	Comments	Rating
07 Feb 2005	DIMENSION - tagging values with units Class for tagging values with units. Provides for transparent conversion, unit checking & combining. Author: Nathan Thern	chemistry, physics, unit, units, dimension, dimensions	3	3	5.0 5.0 \| 1 rating
28 Jan 2005	Temporary (or anonymous) function handles for ML 6 Creates a temporary function m-file and returns a handle to it. Author: Nathan Thern	development environme..., anonymous, function, handle, handles, tmp_handle	2	1	5.0 5.0 \| 1 rating
21 Jan 2005	Generalized Sorting Sort any kind of data based on user-defined criteria. Author: Nathan Thern	sort, sorting, quicksort, miscellaneous, utilities	4	6	3.85714 3.9 \| 7 ratings

Comments and Ratings by Nathan		View all 1 - 3 of 3
Updated	File	Comments	Rating
30 Jul 2009	Save Entire Command History Maintains a complete record of the command history (Matlab only maintains the last 20k worth ... Author: Jonathan Snell
17 Jul 2009	geom2d Functions for geometric computations on planar shapes (points, lines, circles, polygons...) Author: David Legland	This library and its companion, geom3d, are shining jewels - indispensable for doing non-trivial calculations on objects in 2d and 3d space. By the way, leave all the files in the geom2d directory and add the directory to your path. Then you can type "help geom2d" or "doc geom2d" and get properly linked help text in the command window or the help window. The Contents.m file is the proper "MATLAB way" of providing documentation.
17 Jul 2009	geom3d Library to handle 3D geometric primitives: create, intersect, display, and make basic computations Author: David Legland	This library and its companion, geom2d, are shining jewels - indispensable for doing non-trivial calculations on objects in 2d and 3d space. By the way, leave all the files in the geom3d directory and add the directory to your path. Then you can type "help geom3d" or "doc geom3d" and get properly linked help text in the command window or the help window. The Contents.m file is the proper "MATLAB way" of providing documentation.

Comments and Ratings on Nathan's Files			View all 1 - 5 of 11
Updated	File	Comment by	Comments	Rating
03 Feb 2011	Generalized Sorting Sort any kind of data based on user-defined criteria. Author: Nathan Thern	Matthew
12 Mar 2008	Generalized Sorting Sort any kind of data based on user-defined criteria. Author: Nathan Thern	Moringen, Jan	I used the quicksort function with a cellarray of objects and a comparison-function that compared a specific attribute of the objects. It worked nicely. I like how the source array is not touched but a list of indices is returned instead.
28 Jun 2007	Generalized Sorting Sort any kind of data based on user-defined criteria. Author: Nathan Thern	Daz, Joe	This function uses two arguments instead of one (a 1xn vector). Complicated if you just want to sort a simple vector.
18 Mar 2007	Generalized Sorting Sort any kind of data based on user-defined criteria. Author: Nathan Thern	Longoni, Guido	Thank you very much!
04 Mar 2007	Generalized Sorting Sort any kind of data based on user-defined criteria. Author: Nathan Thern	Böllér, Miks	if it "doesnt work", maybe its just you who couldnt use it... have you read the comments in m file?

Top Tags Applied by Nathan	1 - 5 of 21
dimension, dimensions, unit, unit conversion, units

Files Tagged by Nathan				View all 1 - 4 of 4
Updated	File	Tags	Downloads (last 30 days)	Comments	Rating
15 Jul 2009	mlunit_2008a A MATLAB unit test framework supporting new classdef files (r2008a) Author: Christopher	xunit, dimension, framework, widget, unit, units	16	2	4.5 4.5 \| 2 ratings
07 Feb 2005	DIMENSION - tagging values with units Class for tagging values with units. Provides for transparent conversion, unit checking & combining. Author: Nathan Thern	chemistry, physics, unit, units, dimension, dimensions	3	3	5.0 5.0 \| 1 rating
28 Jan 2005	Temporary (or anonymous) function handles for ML 6 Creates a temporary function m-file and returns a handle to it. Author: Nathan Thern	development environme..., anonymous, function, handle, handles, tmp_handle	2	1	5.0 5.0 \| 1 rating
21 Jan 2005	Generalized Sorting Sort any kind of data based on user-defined criteria. Author: Nathan Thern	sort, sorting, quicksort, miscellaneous, utilities	4	6	3.85714 3.9 \| 7 ratings

Currently Watching
Type	Description
File	geom2d
File	geom3d
File	Variable Precision Integer Arithmetic
File	Fractions Toolbox
File	Vector algebra for arrays of any size, with array expansion enabled
File	Multiple matrix multiplications, with array expansion enabled
File	Binary array expansion function
File	NF2FF
File	Near-Field to Far-Field Transformation
File	Viewer3D
File	3D Plot on a Spherical Surface
File	Mesh voxelisation
File	putvar, uigetvar
File	SLM - Shape Language Modeling
File	Solids of Revolution
File	STL_Export
File	physunits module from FORTRAN
File	Units Conversion Toolbox
File	Automatic UNITS conversion
File	Unit Conversion
File	UNITS conversion
File	spheregrid
File	Units and Dimensions Suite for Matlab
File	UNITS
File	Unit Conversion Tools
File	conversion of units
File	Simple Units and Dimensions for Matlab
File	gunits
File	Fundamental Physical Constants and Unit Conversion in SI (MKS) & Gaussian (CGS) Units
File	UnitConvert
File	Inversion every 2D slice for arbitrary Multi-dimension array.
File	Save Entire Command History
File	GridSphere

Files Matching Nathan's Watch List				View all 1 - 5 of 33
Updated	File	Tags	Downloads (last 30 days)	Comments	Rating
08 Feb 2012	GridSphere Produces a nearly even grid over the surface of a sphere. Author: Kurt	sphere, geometry, ball, grid, geodesic, find nearest neighbor...	24	2
25 Jan 2012	Units Conversion Toolbox This toolbox attaches units to Matlab variables and enables unit conversion. Author: John McDermid	units, potw, conversion, pick of the week	144	6	5.0 5.0 \| 5 ratings
25 Jan 2012	putvar, uigetvar Move (get or put) variable(s) directly between a function workspace and the base workspace Author: John D'Errico	assignin, debugging, passing variables, workspace, variables	45	1	5.0 5.0 \| 1 rating
25 Jan 2012	Variable Precision Integer Arithmetic Arithmetic with integers of fully arbitrary size. Arrays and vectors of vpi numbers are supported. Author: John D'Errico	integer, arithmetic, precision, variable, biginteger, numbers	87	96	4.7931 4.8 \| 32 ratings
13 Oct 2011	geom3d Library to handle 3D geometric primitives: create, intersect, display, and make basic computations Author: David Legland	geometry, 3d, geometric computing, polygon, plane, polyhedron	144	17	5.0 5.0 \| 9 ratings

Comments and Ratings Matching Nathan's Watch List			1-5 of 390
Date	File	Comment by	Comments	Rating
08 Feb 2012	GridSphere Produces a nearly even grid over the surface of a sphere.	Kurt	Thank you for the feedback, Paul. I went ahead and put in a request for the description to be modified to include a usage example. It should appear within five business days.	Comment only
08 Feb 2012	geom3d Library to handle 3D geometric primitives: create, intersect, display, and make basic computations	Patrik Eschle	distanceLine3d works on infinite lines a+t*b. Sometimes (collision detection) the distance between line segments AB and CD is required. A distanceSegment3d would be useful. The same is true for points (distancePointSegment ). Or did I just miss it?	Comment only
07 Feb 2012	geom3d Library to handle 3D geometric primitives: create, intersect, display, and make basic computations	Patrik Eschle	Nicely written, good comments - thank you!	5
07 Feb 2012	GridSphere Produces a nearly even grid over the surface of a sphere.	Paul Koppen	Blazingly fast and well documented. Only an example would not have been unbecoming, e.g. to illustrate the fact that returned values are in degrees (whereas Matlab's sph2cart requires radians). [lat,long] = GridSphere(1000); latrad = deg2rad(lat); longrad = deg2rad(long); [x,y,z] = sph2cart(longrad, latrad, 1); scatter3(x, y, z, 22); axis equal vis3d;	Comment only
03 Feb 2012	Multiple matrix multiplications, with array expansion enabled Multiplying matrices, vectors, or scalars contained in two N-D arrays, with array expansion enabled.	Paolo de Leva	Shatrughan, I do not know outerm and PLS, and I cannot completely understand your request, but I can try and explain what you can do with my functions. Allow me to start with the simplest case: A = rand(7,1); B = rand(9,1); X = outer(A, B); Here, X is a matrix, and its size is 7x9. It would make sense to write a function to generalize this to 3-D: A = rand(7,1); B = rand(9,1); C = rand(10,1); X = simple_outer3D(A, B, C); where X is a 3-D array and its size is 7x9x10, which is the size of your expected result. This can be done using this code (where BAXFUN is a function that I posted on MATLAB Central File Exchange; File ID: #23084): function X = simple_outer3D(A, B, C) % A, B, and C must be column vectors X = baxfun(@times, A, B, 0, 1); % Size: 7x9 X = baxfun(@times, X, C, 0, 2); % Size: 7x9x10 Warning: this code is completely valid as a generalization of an outer product only if A, B, and C do not contain complex numbers. See the help of function OUTER for details. Notice that I got the result you expected, but the input matrices have not the same size as in your example. Conversely, input matrices with the same size as in your example would give a different result. Simple case: A = rand(7,2); B = rand(9,2); X = outer(A, B); Here, A and B are not two vectors, but two “arrays of vectors” (each containing two vectors). Hence, X is not a single outer product, but a 7x9x2 array containing two outer products. The first outer product is X(:,:,1) and the second is X(:,:,2). If we generalize to 3-D, we have: A = rand(7,2); B = rand(9,2); C = rand(10,2); X = outer3D(A, B, C); In this case, X is supposed to contain two 3-D arrays. Hence, its size should be 7x9x10x2 (rather than 7x9x10). This can be done by defining outer3D as follows: function X = outer3D(A, B, C) A = reshape(A, [size(A,1),1,1,size(A,2)]); % Size: 7x1x1x2 B = reshape(B, [1,size(B,1),1,size(B,2)]); % Size: 1x9x1x2 C = reshape(C, [1,1,size(C)]); % Size: 1x1x10x2 X = baxfun(@times, A, B); % Size: 7x9x1x2 X = baxfun(@times, X, C); % Size: 7x9x10x2 Warning: this code is completely valid as a generalization of an outer product only if A, B, and C do not contain complex numbers. See the help of function OUTER for details. Note: In this code, BAXFUN (binary array expansion) is equivalent to BSXFUN (binary singleton expansion).	Comment only