Call C code from Matlab -> Matlab crash
Hello,
I have a problem calling C code from Matlab. The mex file compilation
is ok. When I run the program Matlab (7.3) crashes. Below is the
mexFunction code. Any idea is welcome. (I think the main part of the
code (middle part) is not useful for the crash problem, but I put it
anyway).
//###########################################################
#include "math.h"
#include "mex.h"
void mexFunction (int nlhs, mxArray *plhs[], int nrhs, const mxArray
*prhs[]) {
// Standard variables
int p,r,h,i,j,f,w; // Indices for loop
int MAX_NBM = 1000;
int MAX_DIM = 10;
int MAX_NB_CLUST = 20;
double *SF, *km, *new_data;
int size, dim, K, nbm, aux_size, count_bis, count_aux;
double diam_max, diam, vec1_p, vec2_p, dist_min, dis;
int combi[1000000][2];
int dist_aux[1000000][2];
/* Check for proper number of arguments. */
if (nrhs != 5) {
mexErrMsgTxt("5 input required.");
} else if (nlhs > 1) {
mexErrMsgTxt("Too many output arguments");
}
// Input parameter (MATLAB)
new_data = mxGetPr(prhs[0]);
size = (int)mxGetScalar(prhs[1]);
dim = (int)mxGetScalar(prhs[2]);
K = (int)mxGetScalar(prhs[3]);
km = mxGetPr(prhs[4]);
// Output parameter (MATLAB)
plhs[0] = mxCreateDoubleMatrix(1,1,mxREAL);
SF = mxGetPr(plhs[0]);
// Other variables
nbm = size/dim; // Number of points
printf("Taille: %d\n",nbm);
printf("Dimension: %d\n",dim);
//###############################################
// Calculate diameter of all clusters
//###############################################
diam_max = 0;
for (p=1; p<=K; p++) {
double current_clust_mat[1000*10];
int counter = 0;
// Group points belonging to the same cluster
for (r=0; r<nbm; r++) {
if (km[r] == p) {
// Fill the array with the current point
for (h=0;h<dim;h++) {
//printf("%d %d\n",counter*dim+h,new_data[r*dim+h]);
current_clust_mat[counter*dim+h] = new_data[r*dim+h];
}
counter++;
}
}
// Calculate maximum distance (diameter of cluster)
aux_size = counter;
//printf("%d\n",aux_size);
count_aux = 0;
// Find combination of 2 in aux_size
for (i=1; i<aux_size; i++) {
for (r=i+1; r<aux_size+1; r++) {
combi[count_aux][0] = i;
combi[count_aux][1] = r;
//printf("%d %d\n",combi[count_aux][0],combi[count_aux][1]);
count_aux++;
}
}
// Distance between two vectors
diam = 0;
vec1_p = 0;
vec2_p = 0;
for (h=0; h<count_aux; h++) {
double dist = 0;
for (j=0; j<dim; j++) {
vec1_p = current_clust_mat[combi[h][0]*dim+j];
vec2_p = current_clust_mat[combi[h][1]*dim+j];
//printf("%d\n",vec1[j]);
// Standard Euclidean distance
dist = dist + (vec1_p-vec2_p)*(vec1_p-vec2_p);
}
dist = sqrt(dist);
//printf("%f\n",dist);
if (dist > diam) {
diam = dist;
}
}
// Maximum diameter of all clusters
if (diam > diam_max) {
diam_max = diam;
printf("Diameter max: %f\n",diam_max);
}
}
//##############################################
// Calculate dissimilarity
//##############################################
dist_min = 1000000;
// Find combination of 2 in nbm
count_bis = 0;
for (i=1; i<nbm; i++) {
for (r=i+1; r<nbm+1; r++) {
dist_aux[count_bis][0] = i;
dist_aux[count_bis][1] = r;
//printf("%d
%d\n",dist_aux[count_bis][0],dist_aux[count_bis][1]);
count_bis++;
}
}
// Dissimilarity
dis = 0;
vec1_p = 0;
vec2_p = 0;
//printf("\n");
for (w=0; w<count_bis; w++) {
// Cluster appartenance
int clu1 = km[dist_aux[w][0]-1];
int clu2 = km[dist_aux[w][1]-1];
//printf("%d %d\n",clu1,clu2);
// Calculate distance if belong to different clusters
if (clu1 != clu2) {
for (j=0; j<dim; j++) {
// Vectors
vec1_p = new_data[dist
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EngSim: All Matlab features and functions. 2 to 20 Times Faster than MATLAB. Use the same programming syntax as MATLAB, ANSI C/C++, /C++. Good Graphics.
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Converting Matlab code to C using Matlab Compiler
Hello All, Please can I get some guidance on how to Convert a structure from Matlab code to C code using Matlab Compiler. Kind regards Sammy ...
Calling Compiled MATLAB from MATLAB
Hello everyone, How do I compile MATLAB M files into a form that can then be called from within the MATLAB interpreter? A roundabout way would seem to be to (somehow) Turn the matlab code into C (I think mcc does this), then compile this C code into MEX format and call that. Is there an easier way? I have the MATLAB compiler, so I just need to know what to do with it to get this to work. Thanks in advance, Sina sina.tootoonian wrote: > > > Hello everyone, > > How do I compile MATLAB M files into a form that can then be called > from within the MATLAB interpreter? A roundabout way would seem to > be > to (somehow) Turn the matlab code into C (I think mcc does this), > then > compile this C code into MEX format and call that. Is there an > easier > way? I have the MATLAB compiler, so I just need to know what to do > with > it to get this to work. > > Thanks in advance, > > Sina > > HELP MEX > HELP MEX Or, better, HELP MCC help pcode pseudo code is useful to obfuscate code - protect algorithms, yet still run at full speed and be distributable to other matlab users sina.tootoonian wrote: > > > Hello everyone, > > How do I compile MATLAB M files into a form that can then be called > from within the MATLAB interpreter? A roundabout way would seem to > be > to (somehow) Turn the matlab code into C (I think mcc does this), > then > compile this C code into MEX format and call that...
vectorized computation in C++ such as those in Matlab (Matlab to C++)?
Dear all, Can C++/STL/Boost do the vectorized calculation as those in Matlab? For example, in the following code, what I really want to do is to send in a vector of u's. All other parameters such as t, l1, l2, l3, etc. are scalars... But u is a vector. Thus, t6 becomes a vector. t9 is an element-wise multiplication... The following code was actually converted from Matlab. If vectorized computation is not facilitated, then I have to call this function millions of times. But if vectorized computation is okay, then I can send in just a u vector with batch elements a time. I have man...
MathWorks Webinar: MATLAB to C Code Generation with Embedded MATLAB
Join Houman Zarrinkoub, PhD on March 11th for two Live Webinar sessions: 9am U.S. EST- http://bit.ly/bxcQuw 2pm U.S. EST- http://bit.ly/9g7Oqe In this webinar we will showcase new capabilities of MathWorks products enabling you to automatically generate C code from MATLAB functions. This capability is available for a subset of MATLAB language called the Embedded MATLAB. This subset consists of over 300 MATLAB operators and functions and more than 110 Fixed-Point Toolbox and 40 Signal Processing Toolbox functions and new system objects from Signal Processing and Video and Image Processin...
Shall i use the misrosoft Visual c++ code from a m-file generated from matlab in Visual C++ with out matlab runtime environment
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mex - matlab calls fortran which calls matlab which calls fortran
Dear All, I'm trying to link matlab and fortran with mex files and engine matlab, in linux OS. My general purpose is the following: 1) a matlab script A calls a mex function B based upon fortran source code 2) mex function B calls another function in matlab C within matlab engine 3) matlab routine C calls another mex file in fortran D While i'm able to do steps 2) and 3), I can't do step 1). Before to show the code, please reply to this simple question: Is it possible to build the overall process 1-3? On 8 Okt, 16:37, "Michele Catalano" <cata...@yahoo.it> wr...
Conversion from MATLAB to C/C++ using MATLAB compiler
I am working on conversion of .m files to c/c++. I am using the MATLAB compiler version 3.0 and MATLAB version 6.5.1. There seem to be a few functions which do not seem to get converted. The error i got while using functions like TRAIN, NETWORK and INIT (all neural-networks related functions used in the general neural network programs, newpnn.m etc) is The MATLAB compiler does not currently support MATLAB object oriented programming and the functions TRAIN , NETWORK and INIT would produce a run-time error. Could anyone please tell me as to how i can circumnavigate this problem or solve this...
Calling matlab from java (windows), and running the java code not using the matlab JVM
Hello, I want to know if there is a way to call matlab from java (in windows), but not by calling the java code from matlab. I want to use a different JVM than the one matlab uses. In linux it is simple since I can use input/output redirection, is there a way to do this in windows (I have matlab 5.3, pretty old version). Thanks a lot, Nili. ...
Calling C++ Code in Matlab
Hello I want to Call C++ Code Multiple times in my Matlab code, My C++ Code ask for two comand line input argument. where this two command line input argument are Input file name and output file name. I am working in ubuntu operating System and and Matlab 7.11.0 Please help me !!! My C++ Code is in Multiple file like graph.cpp graph.h main.cpp vertex.cpp vertex.h stack.h "Rajan " <rajanshrivastava9@gmail.com> wrote in message news:kcrp9a$gab$1@newscl01ah.mathworks.com... > Hello > > I want to Call C++ Code Multiple times in my Matlab code, My C...
Create (Matlab) object inside C/C++ and pass it to Matlab
I'm trying to create an object inside C++ and then pass it to Matlab via en= gPutVariable. It seems I can create a struct // Create a float array mxArray *acq_data =3D mxCreateNumericMatrix(0, 0, mxSINGLE_CLASS); float *data =3D (float *)mxCalloc(M*N, sizeof(float)); mxSetData(acq_data, data); mxSetM(acq_data, M); mxSetN(acq_data, N); // Convert to struct const char *fieldname =3D "data"; mxArray *acq_struct =3D mxCreateStructMatrix(1,1,1, &fieldname); mxSetField(acq_struct,i,"data",acq_data); // Convert to class ?? Does it work? if (j=3D=3D1...
calling Matlab code in C#
Hi, In my project, I need to call a Matlab function in some C# code. I compiled the Matlab code into a dll and have included that into my C# project. However, I have some problems in figuring out what C# data types correspond to the data types I used in my Matlab code. Specifically, I have an array of struct in Matlab code, i.e. x(j) = c, and c is a struct, having c.a and c.b. I also have a multi-layer struct, something like lmcoords.goalyellow.left.x = -0.67; lmcoords.goalyellow.left.y = -3; lmcoords.goalyellow.right.x = 0.67; lmcoords.goalyellow.right.y = -3; Basically I want to find...
MATLAB talking to MATLAB?
For my project, I need to have a client program (MATLAB executable) talking to a server program (also MATLAB executable) to query data. Is there any easy way to accomplish that? I appreciate any help that I can get on that. Thanks. Cheers, Hoi Oops, I forgot to mention. There are multiple clients querying the server, so I guess serial objects + remote serial port wouldn't work. "Hoi Wong" <wonghoi.ee@gmail.com_> wrote in message news:f3ald6$gg4$1@news.Stanford.EDU... > For my project, I need to have a client program (MATLAB executable) > talking to a ser...
Can I call matlab linear symstem solver in fortran or c on the machine without matlab ?
Can I call matlab linear symstem solver in fortran or c on the machine without matlab ? I have a fortran code now.I need to solve a sparse linear system.Can I call matlab A\B in my programming on the machine without matlab?Thank you all. "zedong" > Can I call matlab A\B in my programming on the machine without matlab... no us "us " <us@neurol.unizh.ch> wrote in message <gn5p03$sho$1@fred.mathworks.com>... > "zedong" > > Can I call matlab A\B in my programming on the machine without matlab... > > no > us Is the \ for sparse matrices not available with the MATLAB Compiler? James Tursa "zedong " <zdongwu@gmail.com> wrote in message <gn5o21$r3l$1@fred.mathworks.com>... > Can I call matlab linear symstem solver in fortran or c on the machine without matlab ? > I have a fortran code now.I need to solve a sparse linear system.Can I call matlab A\B in my programming on the machine without matlab?Thank you all. Yes, effectively so. A\b in MATLAB uses UMFPACK, CHOLMOD, MA57, a sparse QR by John Gilbert, and other specialized solvers (such as handling the case when A is lower triangular, or when A is banded with a density in the band that's high enough to warrant the use of LAPACK's band solvers). Most of these codes are readily available. MA57 requires a license; it's in the Harwell Subroutine Library. I don't have a copy of Gilbert's sparse QR, but I do...
Web resources about - Call C code from Matlab -> Matlab crash - comp.soft-sys.matlab
Undocumented MatlabUndocumented, unsupported and hidden features in Matlab
Matlab Upazila - Wikipedia, the free encyclopedia... 23°21′N 90°42.5′E / 23.35°N 90.7083°E / 23.35; 90.7083 Coordinates : 23°21′N 90°42.5′E / 23.35°N 90.7083°E / 23.35; 90.7083 Matlab ...
Open Directory - Science: Math: Software: MATLAB
The MathWorks - Developers of MATLAB, Simulink and Stateflow. Offers products for data analysis, visualization, application development, simulation, ...
The MathWorks - Developers of MATLAB, Simulink and Stateflow. Offers products for data analysis, visualization, application development, simulation, ...
MATLAB Mobile on the App StoreRead reviews, compare customer ratings, see screenshots, and learn more about MATLAB Mobile. Download MATLAB Mobile and enjoy it on your iPhone, ...
The Smart Emergency Response System Using MATLAB and Simulink - YouTubeIn the aftermath of an earthquake, every second counts for disaster victims. Imagine a system that can locate people quickly and help first responders ...
The A-Z of Programming Languages: MATLABWhat prompted the development of MATLAB?
Matlab: Invalid .NET Framework. Either the specified framework was not found or is not currently supported ...
If you are trying to compile Matlab into .Net framework, you might encounter this message, even though you have the .Net framework installed ...
If you are trying to compile Matlab into .Net framework, you might encounter this message, even though you have the .Net framework installed ...
Matlab edges closer to electronic design automation world
Matlab, one of the world's most widely used products for algorithmic development, has long occupied its own niche far removed from EDA and hardware ...
Matlab, one of the world's most widely used products for algorithmic development, has long occupied its own niche far removed from EDA and hardware ...
Can I/How do I use DMTCP with a parallel pool of MATLAB workers? · Issue #223 · dmtcp/dmtcp · GitHubdmtcp - DMTCP: Distributed MultiThreaded CheckPointing matlab -nodisplay -r "parpool('local',4); parfor i=1:10, pause(1); fprintf('%i ',i); end; ...
Using MATLAB and SDR to Reverse Engineer 433MHz Messages... so he focused on studying the methodology and the tools available for analyzing 433MHz RF transmission. He describes the process of using MATLAB ...
Resources last updated: 3/4/2016 11:31:36 AM