Answered
Image processing in MATLAB/OpenCV
There is also a mex interface to opencv which may offer the best compromise, as the actual opencv processing is still done in na...

12 years ago | 0

Answered
Calibrating VIX option data to model - lsqnonlin problem
lsqnonlin does not know that myfun takes 4 arguments, it expects it to just take one. You can get around this using an 'anonymou...

12 years ago | 0

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Answered
large sparse matrices fail with accumarray
I'm not sure how your two statements here are equivalent? a = sparse(1e6, 1e6); creates a sparse matrix of all zeros of ...

12 years ago | 0

Question

How to compile a library for linking with a mexfunction?
I have a C++ program which I am constructing a mex interface for. This program's source code files are contained in a single fol...

13 years ago | 1 answer | 0

Question

What is the most memory efficient way to return large arrays in a C structure from a Matlab C mex function?
I have a program which creates a C structure which contains large arrays of various basic data types (ints doubles etc.). What i...

13 years ago | 1 answer | 0

Answered
How to call MATLAB in my VB GUI
You will probably require the <http://www.mathworks.co.uk/products/netbuilder/ Matlab .NET Builder NE> to do this easily. Consid...

13 years ago | 0

Question

C++ Mex file crashes matlab on 64bit linux, but not 32 bit windows, but program runs fine outside Matlab
*warning: the code I provide in this question may crash your machine* I have written a mex gateway function to a C++ class. If ...

13 years ago | 2 answers | 0

Answered
How to remove accidentally created radiobutton Callback function?
ok, I solved the problem by creating a duplicate of the original radiobutton, deleting the original, then renaming the new radio...

13 years ago | 0

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Question

How to remove accidentally created radiobutton Callback function?
I have a gui I've been working on which has a button group with two radiobuttons. Obviously these call the SelectionChangeFcn wh...

13 years ago | 1 answer | 0

Answered
Curve fitting to data sets with multiple parameters
use polyfitn from the file exchange http://www.mathworks.com/matlabcentral/fileexchange/10065-polyfitn

13 years ago | 0

Question

Are there any speed/memory implications for using "always dbstop on error"?
I often find it handy to use the "Always dbstop on error" option for the debugger, but am wondering if there is any drawback in ...

13 years ago | 1 answer | 1

Answered
4D interpolation
you could fit a 4D polynomial to the data using polyfitn from the file exchange (<http://www.mathworks.com/matlabcentral/fileexc...

13 years ago | 0

| accepted

Question

Numerically calculating derivatives in the ODE solvers using the matlab time step size, is it a good idea, and if it's ok what is the best way to do it?
Hello, I am thinking of creating a system of differential equations to be solved using the Matlab ode solvers, the right hand...

13 years ago | 0 answers | 0

Answered
Matlab with dual core uses only 50% cpu (R2010b, Intel Core 2 duo T9300)
Have a look at the multicore package on the file exchange to speed up computation using multiple cores. <http://www.mathwork...

13 years ago | 0

Answered
MATLAB vs. Excel: Matlab seems to give better answer to exponential decay, anyone know why?
You should _never_ use Excel for anything more complicated than accounting, as this only requires a precision of 2 decimal place...

13 years ago | 0

Question

A better way to change the name of a structure field?
Hello, I would like to change the name of a structure field at run time. Specifically, I want to change all the names to upper...

13 years ago | 1 answer | 0