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

etwa 10 Jahre vor | 0

Gelöst

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...

mehr als 10 Jahre vor

Beantwortet
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...

mehr als 10 Jahre vor | 1

Beantwortet
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-...

mehr als 10 Jahre vor | 2

Frage

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...

mehr als 10 Jahre vor | 2 Antworten | 0

2

Antworten

Kanal

Zojul social media followers

mehr als 10 Jahre vor

Kanal

London social meetups 2

mehr als 10 Jahre vor

Kanal

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

mehr als 10 Jahre vor

Kanal

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

mehr als 10 Jahre vor

Beantwortet
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...

mehr als 10 Jahre vor | 1

Beantwortet
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...

fast 11 Jahre vor | 0

Beantwortet
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...

fast 11 Jahre vor | 0

Beantwortet
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 ...

fast 11 Jahre vor | 0

Frage

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...

fast 11 Jahre vor | 1 Antwort | 0

1

Antwort

Frage

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...

fast 11 Jahre vor | 2 Antworten | 1

2

Antworten

Frage

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...

fast 11 Jahre vor | 2 Antworten | 2

2

Antworten

Beantwortet
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.

etwa 11 Jahre vor | 0

Gesendet

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

etwa 11 Jahre vor | 912 Downloads |

0.0 / 5

Beantwortet
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...

etwa 11 Jahre vor | 0

Gesendet

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

etwa 11 Jahre vor | 1045 Downloads |

5.0 / 5

Frage

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...

mehr als 11 Jahre vor | 3 Antworten | 1

3

Antworten

Beantwortet
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...

mehr als 11 Jahre vor | 0

Beantwortet
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...

mehr als 11 Jahre vor | 0

Beantwortet
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...

mehr als 11 Jahre vor | 0

| akzeptiert

Frage

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...

mehr als 11 Jahre vor | 3 Antworten | 0

3

Antworten

Beantwortet
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...

mehr als 11 Jahre vor | 0

Beantwortet
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...

mehr als 11 Jahre vor | 2

Beantwortet
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...

mehr als 11 Jahre vor | 0

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

mehr als 11 Jahre vor | 0

| akzeptiert

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

mehr als 11 Jahre vor | 0