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

plus de 9 ans il y a | 0

A résolu


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...

plus de 9 ans il y a

Réponse apportée
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...

plus de 9 ans il y a | 1

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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-...

plus de 9 ans il y a | 2

Question


How can I access an API which requires OAuth 2.0 authorization, such as Google APIs
Some REST APIs, such as <https://developers.google.com/analytics/devguides/reporting/core/v3/gdataAuthorization Google Analytics...

presque 10 ans il y a | 2 réponses | 0

2

réponses

Chaîne


Zojul social media followers

environ 10 ans il y a

Chaîne


London social meetups 2

environ 10 ans il y a

Chaîne


London social meetups
The membership sizes of several London-based social meetup groups.

environ 10 ans il y a

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Meetup stats
Statistics about Meetup collected from meetup.com/about

environ 10 ans il y a

Réponse apportée
Returning and passing void pointers to mex functions
Whilst you are not interfacing to a C++ class, much of a similar discussion on how to reuse a pointer to a C++ class is relevant...

environ 10 ans il y a | 1

Réponse apportée
How to prevent Matlab from GPU switching on Macbook Pro?
If you don't need the desktop, then you can run the command window only version of MATLAB by calling the following in a terminal...

environ 10 ans il y a | 0

Réponse apportée
Which MATLAB operations/functions need speeding up?
Matrix operations involving the transpose of a sparse matrix, especially J' * J and J' * K, where J is a very tall matrix. Const...

environ 10 ans il y a | 0

Réponse apportée
Are the values in each compressed column of a sparse matrix stored in order?
Since it is possible to write the column data in any order from a mex file, I would say *no*. However, I tried three methods ...

environ 10 ans il y a | 0

Question


Are the values in each compressed column of a sparse matrix stored in order?
If I have a sparse column vector (e.g. a column of a sparse matrix), and I'm accessing the elements of that vector in a mex file...

environ 10 ans il y a | 1 réponse | 0

1

réponse

Question


Debugging C++ mex files in Xcode 7 on El Capitan
I have just migrated to MAC OS, and am trying to debug a mex file for the first time. I'm using MATLAB R2015b and Xcode 7.0.1 on...

environ 10 ans il y a | 2 réponses | 1

2

réponses

Question


How do *you* debug mex files on Mac OS
I'm having trouble <http://uk.mathworks.com/matlabcentral/answers/249023-debugging-c-mex-files-in-xcode-7-on-el-capitan debuggin...

environ 10 ans il y a | 2 réponses | 2

2

réponses

Réponse apportée
imagesc() Y Axis Log Scale Not Working (Help!)
If you want to avoid pcolor, you can resample the image at the log scale locations, then use imagesc to display that.

plus de 10 ans il y a | 0

A soumis


Bitcount & bitwise hamming distance
Count the set bits in vectors, and compute bitwise hamming distances between sets of vectors

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0.0 / 5

Réponse apportée
Which MATLAB operations/functions need speeding up?
TYPECAST Typecast uses a deep copy rather than a shared data copy, as explained by James Tursa in his <http://www.mathworks.c...

plus de 10 ans il y a | 0

A soumis


Figure control widget
Intuitive manipulation of a figure using key and mouse gestures

plus de 10 ans il y a | 1 téléchargement |

5.0 / 5

Question


Is A./B different from B.\A?
Given two matrices, A and B, will A./B ever give a different answer from B.\A, or are these two expressions equivalent? It se...

plus de 10 ans il y a | 3 réponses | 1

3

réponses

Réponse apportée
Which MATLAB operations/functions need speeding up?
IMFILTER with separable filters on multi-channel images. This particular use case of imfilter is actually slower than using c...

plus de 10 ans il y a | 0

Réponse apportée
Which MATLAB operations/functions need speeding up?
It needs a NOP function - a builtin function which does absolutely nothing, but extremely quickly. In compiled languages like...

plus de 10 ans il y a | 0

Réponse apportée
Creating movie from Images from a for loop
Produce your images programmatically, rather than by exporting a figure, if you can, as it will be much faster. <http://www.math...

plus de 10 ans il y a | 0

| A accepté

Question


Given a named function, how can I call this function, and not the subfunction of the same name?
My function is passed the name of a function (as a string). It just so happens that my function contains a subfunction of that n...

plus de 10 ans il y a | 3 réponses | 0

3

réponses

Réponse apportée
combining many RGB images into one image
You can display a cell array of images using <http://www.mathworks.com/matlabcentral/fileexchange/22387-imdisp imdisp>. imdi...

plus de 10 ans il y a | 0

Réponse apportée
In mex files, where does output to stdout and stderr go?
In a C++ mex file you can output std::cout to the command line, by putting the following code somewhere in your mex file: c...

plus de 10 ans il y a | 2

Réponse apportée
scatter plot with 4 different background color
figure; im = rand(2, 2, 3); image([0 1], [0 1], im); hold on a = rand(10,1); b = rand(10,1); scatter(a, b); The...

plus de 10 ans il y a | 0

Réponse apportée
How to optimize this matlab code?
Use <http://www.mathworks.com/matlabcentral/fileexchange/8773 multiprod> as follows: y = reshape(multiprod(multiprod(W_matr...

plus de 10 ans il y a | 0

| A accepté

Réponse apportée
How to determine the MATLAB version when compiling C/C++ mex files
matrix.h contains the following: #define MX_API_VER 0x07040000

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