Oliver Woodford

Active since 2011

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Programming Languages:
Python, C++, C, MATLAB
Spoken Languages:
English

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Solved

Find a Pythagorean triple
Given four different positive numbers, a, b, c and d, provided in increasing order: a < b < c < d, find if any three of them com...

17 days ago

Solved

Is this triangle right-angled?
Given any three positive numbers a, b, c, return true if the triangle with sides a, b and c is right-angled. Otherwise, return f...

20 days ago

Answered
Exporting images (png) through export_fig - painfully slow
Reducing the level of anti-aliasing will reduce the sixe of the images created, saving time. Use the '-aX' option, where X is 1 ...

1 month ago | 0

Answered
export_fig Transparency
The answer is in the help text you shared (you just want the axes color to be white, not none): fig = figure; plot(rand(5)) t...

1 month ago | 0

Answered
Changing image rendering?
Basically you are rendering a binary image, and you're getting gray levels instead of just black and white? What are you using ...

1 year ago | 0

Submitted

Batch Job
Toolbox to spread batch work over multiple MATLAB instances, even on other PCs

1 year ago | 4 downloads |

Submitted

SC - powerful image rendering
Useful tool for rendering and outputting information rich images

1 year ago | 21 downloads |

Question

When does an update to a function come into effect?
If I edit an existing function, and save the file, when does that change come into effect, in the following scenarios: Code is ...

2 years ago | 0 answers | 2

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answers

Answered
Matlab editor doubt - edit running code
In more recent versions of MATLAB, if you drag a file from a folder into the editor window, that file will open immediately, eve...

2 years ago | 0

Question

How can I render points in 3D such that they correctly occlude each other
When I use plot3() to render points (using the OpenGL renderer, in hardware mode, with full hardware support), the occlusion of ...

2 years ago | 0 answers | 0

0

answers

Submitted

fix_lines
Improves the style of lines in MATLAB generated eps files

3 years ago | 2 downloads |

Answered
How to display 70 128*128 images in Matlab from a mat file
The imdisp method in the <https://www.mathworks.com/matlabcentral/fileexchange/16233-sc-powerful-image-rendering sc> FEX submiss...

3 years ago | 0

Solved

expand intervals
You're given a row vector of an even number of monotonically increasing integers. Each pair of consecutive integers is the lower...

3 years ago

Answered
Plot 2D images in 3D scatter plot
h = surface(X, Y, Z, im, 'facecolor', 'texturemap', 'edgecolor', 'none'); alpha(h, 0.5); X, Y, and Z are each 2x2 matric...

3 years ago | 0

| accepted

Submitted

maximize
Platform independent function to maximize a figure window.

3 years ago | 6 downloads |

Submitted

Image Alignment Demo with several goodies: Lie algebra, auto differentiation...
Demonstration of gradient-based image alignment, including some nice tricks and handy software

3 years ago | 2 downloads |

Submitted

vol3d v2
3-d volume (voxel) rendering

3 years ago | 40 downloads |

Submitted

Example MATLAB class wrapper for a C++ class
An example of how to safely encapsulate a C++ class in a MATLAB class, via a mex interface.

4 years ago | 25 downloads |

Answered
Which standard MATLAB functions do you shadow with your own version, and why?
I shadow *bsxfun* with my own version, which calls the builtin function bsxfun for all inputs except symbolic ones, for which I ...

4 years ago | 0

Answered
Which standard MATLAB functions do you shadow with your own version, and why?
I shadow *dot* and *cross* with my own versions, which extend the standard functionality to allow for inputs which have <https:/...

4 years ago | 0

Question

Which standard MATLAB functions do you shadow with your own version, and why?
When you have two functions on your MATLAB path with the same name, the function in the directory higher up the path gets called...

4 years ago | 9 answers | 0

9

answers

Submitted

C++ JSON IO
Mex wrapper to C++ class for fast reading and writing of JSON files

4 years ago | 7 downloads |

Submitted

Tensor matrix multiply
Matrix multiplication over tensor arrays (i.e. arrays of matrices), with matrix transposition.

5 years ago | 3 downloads |

Answered
How do *you* debug mex files on Mac OS
<https://www.mathworks.com/matlabcentral/answers/249023-debugging-c-mex-files-in-xcode-7-on-el-capitan#answer_197054 This> is ho...

5 years ago | 0

Answered
Debugging C++ mex files in Xcode 7 on El Capitan
I have been able to hit a breakpoint in my mex code, within the Xcode IDE, by doing the following steps: # <https://www.mathw...

5 years ago | 0

Answered
Debugging C++ mex files in Xcode 7 on El Capitan
I build the mex file as a command line project in Xcode, using the following custom build settings: <</matlabcentral/answers/...

5 years ago | 0

Answered
Which MATLAB operations/functions need speeding up?
MATLAB has no documented functions for reading JSON files, and the internal, undocumented method: matlab.internal.webservic...

5 years ago | 0

Solved

Index one element in each vector of an array along a given dimension
Functions like min and max can return in their second output argument the index of the element in each vector along a particular...

5 years ago

Answered
How to compute the hash of a string using SHA algorithms
The Java-based solution can be found <http://uk.mathworks.com/matlabcentral/answers/45323-how-to-calculate-hash-sum-of-a-string-...

5 years ago | 1

Answered
How to calculate hash sum of a string (using java)?
A similar solution: %STRING2HASH Convert a string to a 64 char hex hash string (256 bit hash) % % hash = string2has...

5 years ago | 0

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