AP
82 total contributions since 2011
AP's Badges
Publish your first comment or rating
Awarded to AP on 09 Oct 2019
Publish your first submission
Awarded to AP on 09 Oct 2019
Accept 20 answers given by other contributors
Awarded to AP on 20 Jul 2017
Question
Finding the edges of an ellipse in an image
I have an binary image as shown below. <</matlabcentral/answers/uploaded_files/37057/LeadingVortex_No_Ellipse.jpg>> As can...
environ 5 ans ago | 2 answers | 0
2
answersQuestion
Solving a system of nonlinear equations
I have about 1000 measurement which relates three variables to each other: |x|, |y|, and |z|. In other words, I have 1000 measur...
environ 5 ans ago | 1 answer | 0
1
answerQuestion
Imposing a prescribed motion field to a grayscale image
I have a grayscale image with intensity distribution |I1(i,j)|. I am trying apply a motion field u(i,j), v(i,j) where |(i...
presque 6 ans ago | 2 answers | 0
2
answersQuestion
Determining the separability of a 3D kernel
I have three kernels of size |2×2×2| (as define below by |ker1|, |ker2|, |ker3|). I wanted to know how I can determine whether t...
presque 6 ans ago | 0 answers | 0
0
answersQuestion
Model Reduction of a Noisy 2D Experimental Data
I am trying to understand the following |MATLAB| code: Reduce(Reduce(u)) where |u| is a |n×m| matrix and is a 2D measu...
presque 6 ans ago | 0 answers | 0
0
answersQuestion
mexCallMATLAB crashes for dynamically allocated mxArrays
Could someone kindly help me fix the issue that I have in using dynamically allocated mxArrays? In the example code below, MATLA...
presque 6 ans ago | 1 answer | 0
1
answerQuestion
Problem in using mxSetPr
I am writing a function within in a |mex| file which calls a |MATLAB| function. Unfortunately, when it comes to |mxSetPr|, |MATL...
presque 6 ans ago | 1 answer | 0
1
answerQuestion
Taking a special image derivative using convolution
I have two images at different times. The first image is |im1| at time |t1| and the second image is |im2| at time |t2|. I want t...
presque 6 ans ago | 0 answers | 0
0
answersQuestion
Most Efficient Way of Using mexCallMATLAB in Converting Double* to mxArray*
I am writing a |MEX| code in which I need to use |pinv| function. I am trying to find a way to pass the array of type |double| t...
presque 6 ans ago | 1 answer | 0
1
answerQuestion
A problem in running a MEX file in a consistent way
I have written a |MEX| file. This file compiles successfully with no problem. For some reasons, which I am really baffled, this ...
plus de 6 ans ago | 1 answer | 0
1
answerQuestion
How can I label a solution as NaN in a MEX code?
I am using solvers of |LAPACK| libraries in a |MATLAB| |MEX| file for solving linear system of equations. For some of the cases,...
plus de 6 ans ago | 2 answers | 0
2
answersQuestion
Problem in using the "-g" option of mex
I have written a |MEX| file which is successfully built by: mex -v mymex.cpp However, when I want to add the debug inf...
plus de 6 ans ago | 1 answer | 0
1
answerQuestion
Defining a function (including vector dot product) for all the points in 3D
I am trying to build the following function in a three dimensional domain. <</matlabcentral/answers/uploaded_files/13670/Un...
plus de 6 ans ago | 2 answers | 0
2
answersQuestion
Problem in using bsxfun
I have two arrays in MATLAB: A; % size(A) = [NX NY NZ 3 3] b; % size(b) = [NX NY NZ 3 1] These two arrays are ver...
plus de 6 ans ago | 1 answer | 0
1
answerQuestion
Custom subarray of a multidimensional array
I have an array |A| which has a size |[N1 N2 N3 3 3]|. Array |A| can be considered as a rectangular box in three dimensions that...
plus de 6 ans ago | 1 answer | 0
1
answerQuestion
How to vectorize the multiplication of arrays with DIM=5?
I have a three dimensional domain in MATLAB. For each point in the domain I have defined three arrays of size |(NX,NY,NZ)| at ea...
plus de 6 ans ago | 0 answers | 0
0
answersQuestion
Finding the repetition of each element of a matrix
I have a matrix named A with size N×3. For example, A = [ 1 2 3; 1 4 5; 5 6 7; ...
plus de 6 ans ago | 2 answers | 0
2
answersQuestion
Mapping elements of a matrix using a vector array
I have a matrix named A with size N×3. The values of the elements of A ranges from 1 to M. For example, A with size 8×3: A ...
plus de 6 ans ago | 1 answer | 1
1
answerQuestion
Replacing all the elements of one matrix with new values (one to one mapping)
I have a large matrix of size 50000×3. I would like to replace the values of the elements with a new values. To illustrate my pr...
plus de 6 ans ago | 1 answer | 0
1
answerQuestion
Changing the radial range in a polar plot
Dear All, I would like to change the radial range of a polar plot. How can I change the following plot such that radius range...
plus de 6 ans ago | 1 answer | 0
1
answerQuestion
Deploying 32bit applications using MATLAB 64bit
Hello All, May I know how I can deploy a MATLAB code into a 32 bit application using MATLAB 64bit running under Windows 7 64b...
plus de 6 ans ago | 1 answer | 0
1
answerQuestion
vectorizing calculation of eigen values of a large multi-dimensional array
Dear All, I have a 3D rectangular domain. Each point is associated with a vector(u,v,w) through time. u, v, and w are of size...
environ 7 ans ago | 2 answers | 1
2
answersQuestion
How to vectorize a for loop with an if condition inside
Dear All, How can I vectorize the following loop? Basically, I have a structured grid in whose node ids are stored in a array...
plus de 7 ans ago | 1 answer | 0
1
answerQuestion
writing a buffer of 80 characters to file in a binary format
I am trying to translate the following snippet which is in C. char buffer[80]; strcpy(buffer,"Velocity"); fwrite(buff...
plus de 7 ans ago | 3 answers | 0
3
answersQuestion
Is it possible to use C++ string and sstream in MATLAB MEX?
Dear All, Is it possible to use C++ string and sstream in a MATLAB MEX file? The following is a part of my code in which I am...
plus de 7 ans ago | 0 answers | 0
0
answersQuestion
Problem using Intel MKL with MEX
Dear All, Is it possible to use Intel MKL 10.3 in MEX? I am having problem in using MKL 10.3 along with MEX. I have no proble...
plus de 7 ans ago | 1 answer | 0
1
answerQuestion
Problem in specifying dependent library files by using MEX switches
I am trying to find the instructions for specifying the dependent library files as well as the path for compiling a c++ MEX file...
plus de 7 ans ago | 4 answers | 0
4
answersQuestion
Apply a mask to 4D medical images in a vectorized way
Dear All, I have a 4D array V, with the size [144 144 12 25]. In fact, it is a 4D medical image with 12 stacked slices in 25 ...
plus de 7 ans ago | 2 answers | 0
2
answersQuestion
Help on showing a mask in an axes object for a MATLAB GUI
Dear All, I have designed a GUI which has an axes object. I want to create and overlay a mask on an image in the axes of the ...
plus de 7 ans ago | 2 answers | 0
2
answersQuestion
Help on creating a customized mask template
Dear All, I am trying to create a customized mask template similar to the following picture. Could someone please let me know...
plus de 7 ans ago | 1 answer | 0
1
answer
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
Select web siteYou can also select a web site from the following list:
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)