Matt J
Professional Interests: medical image processing, optimization algorithms PLEASE NOTE: I do not read email sent through my author page. Please post questions about FEX submissions in their respective Comments section.
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Top ten contributors whose answers received the most acceptances in 2022
Awarded to Matt J on 01 Jan 2023
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Awarded to Matt J on 01 Nov 2019
Top ten contributors whose answers received the most acceptances in 2021
Awarded to Matt J on 01 Jan 2022
Publish your first review
Awarded to Matt J on 09 Oct 2019
Your submissions received 25 five star ratings
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Publish your first submission
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Answer 50 questions that were unanswered for more than 30 days
Awarded to Matt J on 12 Oct 2017
Contribute at least one answer each month for 36 consecutive months
Awarded to Matt J on 20 Jul 2017
Accept 50 answers given by other contributors
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100 of your answers have been accepted
Awarded to Matt J on 20 Jul 2017
Content Feed
Submitted
Tools for Processing Consecutive Repetitions in Vectors
A set of functions for labeling and manipulating groups of consecutively repeating elements in a vector.
2 months ago | 6 downloads |
Submitted
Block transposition, permutation, and reshaping of arrays
Analogues for transpose(), reshape(), and permute() but where sub-blocks of the array are treated as scalar elements.
2 months ago | 6 downloads |
Submitted
outputnames
Get a list of the output argument names of the currently executing function.
4 months ago | 1 download |
Submitted
Object-oriented tools for fitting conics and quadrics
A tool set for fitting various conics and quadric surfaces, e.g., ellipses, cylinders, spheres, planes, cones, and lines.
5 months ago | 65 downloads |
Submitted
Further tools for analyzing objects in N-dimensional images
A collection of tools to supplement bwpropfilt, bwareaopen, and the like.
6 months ago | 5 downloads |
Submitted
gaussfitn
Fit N-dimensional scattered points with Gaussian+constant
8 months ago | 20 downloads |
Submitted
spatialgraph2D
Creates a graph object with 2D spatial locations associated with the nodes
9 months ago | 2 downloads |
Submitted
Absolute Orientation - Horn's method
Solves weighted absolute orientation problem using Horn's quaternion-based method.
10 months ago | 34 downloads |
Submitted
Convert linear functions to matrix form
Obtaining the matrix representing a given linear function
12 months ago | 15 downloads |
Submitted
Intersections of multiple 2D lines or line segments
Compute the intersection of a reference line (or line segment) with a polyshape boundary or with a batch of other line segments....
1 year ago | 13 downloads |
Submitted
PROB2MATRICES: A selective version of prob2struct
Obtains matrices for select parts of an optimization problem from problem-based description.
1 year ago | 1 download |
Submitted
3D Rotation about Shifted Axis
Computes/applies rotation about arbitrary 3D line.
2 years ago | 26 downloads |
Submitted
Analyze N-dimensional Convex Polyhedra
Find vertex or (in)equality forms of convex polyhedra in R^n (for n not super large). Also, compute their intersections and unio...
2 years ago | 44 downloads |
Submitted
N-dimensional sparse arrays
Creates an N-dimensional sparse array object, for arbitrary N.
2 years ago | 34 downloads |
Submitted
whosGPU
Provides WHOS-like output for gpuArray variables in the current workspace.
2 years ago | 11 downloads |
Submitted
Extract linearly independent subset of matrix columns
Loop-free code routine to find a maximal subset of linearly independent columns in a matrix
2 years ago | 17 downloads |
Submitted
Constrained minimum L1-norm solutions of linear equations
Finds least L1-norm solutions to linear equations C*x=d subject to linear and/or integer constraints.
3 years ago | 23 downloads |
Submitted
ndgridVecs
A more efficient substitute for ndgrid meant to help capitalize on implicit expansion.
3 years ago | 3 downloads |
Submitted
Find vertices in image of convex polygon
Estimates the corner points of a pixelated convex polygon having a known number of vertices.
3 years ago | 14 downloads |
Submitted
Structure fields to variables
Code writing tool for importing/exporting workspace variables to or from a struct.
3 years ago | 33 downloads |
Submitted
Separable Block-wise Operations
Efficiently performs separable operations (e.g., sum, mean,prod, min, max,...) on array sub-blocks
4 years ago | 8 downloads |
Submitted
Quadratic minimization with norm constraint
Minimizes convex or non-convex quadratics subject to (in)equality constraint on norm(x)
5 years ago | 6 downloads |
Submitted
MAT2TILES: divide array into equal-sized sub-arrays
Splits an array of any dimension into cell array of equal sized chunks.
5 years ago | 30 downloads |
Submitted
IMRESIZEN: resize an N-dimensional array
An N-dimensional analog of the imresize() function
5 years ago | 10 downloads |
Submitted
Regular Control Point Interpolation Matrix with Boundary Conditions
Creates Toeplitz-like matrices representing interpolation operations with edge conditions.
7 years ago | 11 downloads |
Submitted
Memory-efficient anonymous functions
Obtain anonymous function clean of non-essential workspace variables
7 years ago | 1 download |
Submitted
Zero-Based Indexable Arrays (OOP Exercise)
Creates arrays whose indexing starts from zero instead of one.
11 years ago | 7 downloads |
Submitted
Whos
Variant of whos(). Gives memory in Kbytes and displays array dimensions even for 4D+ arrays.
12 years ago | 1 download |
Submitted
Matrix Products Expressed in Terms of Individual Operands
A class representing products of matrices, internally storing/manipulating them separately.
12 years ago | 2 downloads |
Submitted
Overloading SIZE for Array-like User-Defined Objects
A tool for OOP overloading of the size() method, imitating I/O conventions of MATLAB's native SIZE.
12 years ago | 1 download |
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