Dear all, I've already posted a message "Is MATLAB v.R2009b slower than that v. R2006b?" (http://www.mathworks.com/matlabcentral/newsreader/view_thread/269969#707405) but have received no explanation unfortunatelly. There is one more question about both MATLAB versions R2009b and R2006b. There were no problem to solve ODE analytically in the MATLAB v. R2006b: >> tic, U=dsolve('D2U+DU-A*t*U+4*t=0','U(1)=0','DU(1-h)=Tau'), toc U = 2*exp(-1/2*t)*AiryAi((-1/4-A*t)/A*(-A)^(1/3))*(AiryBi(-1/4*(1+4*A)*...., a solution in Airy or Bessel functions. Elapsed time is 17.102361 seconds. However, in the MATLAB v. R2009b I've get the following error message: >> U=dsolve('D2U+DU-A*t*U+4*t=0','U(1)=0','DU(1-h)=b') ??? Error using ==> mupadmex The error message identifier is invalid. Error in ==> sym.sym>sym.mupadmexnout at 2003 out = mupadmex(fcn,args{:}); Error in ==> dsolve>mupadDsolve at 190 [var_list,R] = mupadmexnout('mllib::dsolve',sys,x,ignoreConstraints); Error in ==> dsolve at 97 [R,vars] = mupadDsolve(ignoreConstraints,varargin{1:narg}); What was wrong in the above command? As one could see, it is something to do with mupadDsolve, i.e. with the MuPad engine newly incorportated into the MATLAB. Is it so advised to ferget MATLAB Symbolic Math Toolbox and learn MuPad? Why? Is there any good and simple introduction for the MuPad? Thanks! Yevgeny "Yevg...

Hello, I have written a mex gateway function to a C++ class. If I compile this mex function on 32Bit windows using R2008a I have no problems. If I compile and run on Matlab R2011a running 64bit Scientific Linux (a version of Red Hat Enterprize Linux) matlab exits with a segfault when the mexfunction is called, although it appears to run about halfway through the program. The C++ class can be compiled and run (with a main function) outside of Matlab on both platforms with no errors. I am using Microsoft Visual C++ Express Edition on the windows machine, and gcc 4.4.5 on the Linux machine. Can anyone suggest what the cause of this might be and how I can I fix it? I am having a hard time debugging on Linux as I do not have access to a graphical debugger for use with matlab and am unfamiliar with gdb. This is compounded by the fact that the program compiles and runs fine when compiled as a standalone program. A zip file containing the code and data files necessary to reproduce the problem can be downloaded from http://www.see.ed.ac.uk/~s0237326/downloads/mexcrash.zip. This zip file contains the .m and .cpp source code, and a text file for testing (Temp.fem). The file fmehsersetup.m shows the commands I am using to compile. The file Test_mexfmesher.m runs the mexfunction with an appropriate input for testing. The mex gateway function is mexfmesher.cpp, it calls the fmesher class which is made up of the files in the fmesher directory. Below is a backtrace from the se...

I have MATLAB 2009b with the Symbolic Math Toolbox: ------------------------------------------------------------------------------------- MATLAB Version 7.9.0.529 (R2009b) MATLAB License Number: 615814 Operating System: Linux 2.6.31-gentoo-r6 #10 SMP Tue Jan 5 00:58:07 CET 2010 i686 Java VM Version: Java 1.6.0_17-b04 with Sun Microsystems Inc. Java HotSpot(TM) Client VM mixed mode, sharing ------------------------------------------------------------------------------------- MATLAB Version 7.9 (R2009b) [...] Symbolic Math Toolbox Version 5.3 (R2009b) [...] >> syms x ??? Error using ==> mupadmex at 31 The Symbolic Math Toolbox is not yet available for this architecture. Error in ==> /opt/matlab/toolbox/symbolic/symbolic/symengine.p>symengine at 26 Error in ==> sym.sym>sym.sym at 97 eng = symengine; Error in ==> syms at 77 assignin('caller',x,sym(x)); The Mathworks website says that this architecture is supposed to support Linux 32 bit. What's wrong here? Thanks, -Stephen- "Stephen Bosch" <rhombus@ymail.com> wrote in message news:hit7rr$kb8$1@fred.mathworks.com... >I have MATLAB 2009b with the Symbolic Math Toolbox: > > ------------------------------------------------------------------------------------- > MATLAB Version 7.9.0.529 (R2009b) > MATLAB License Number: 615814 > Operating System: ...

Hi I discovered this issue with the symbolic toolbox clc clear all syms c1 c2 c3 a = 2*(1064*c2 + 4461*c3 - 1031)*(c1^2 + c2^2 + c3^2 + 1) b = 3*(1064*c2 + 4461*c3 - 1031)*(c1^2 + c2^2 + c3^2 + 1) gcd (a,b). for such a simple problem, the answer is ------------------------- c1^2 + c2^2 + c3^2 + 1 is there a workaround? On 7/25/2011 11:30 AM, Mayowa wrote: > Hi > > I discovered this issue with the symbolic toolbox > > clc > clear all > syms c1 c2 c3 > a = 2*(1064*c2 + 4461*c3 - 1031)*(c1^2 + c2^2 + c3^2 + 1) > b = 3*(1064*c2 + 4461*c3 - 1031)*(c1^2 + c2^2 + c3^2 + 1) > gcd (a,b). > > for such a simple problem, the answer is > ------------------------- > c1^2 + c2^2 + c3^2 + 1 > > is there a workaround? What exactly is the issue you discovered? --Nasser Nasser, I assumed the issue is obvious, gcd(a,b) is giving c1^2 + c2^2 + c3^2 + 1 instead of (1064*c2 + 4461*c3 - 1031)*(c1^2 + c2^2 + c3^2 + 1) "Nasser M. Abbasi" <nma@12000.org> wrote in message <j0kcun$7i4$1@speranza.aioe.org>... > On 7/25/2011 11:30 AM, Mayowa wrote: > > Hi > > > > I discovered this issue with the symbolic toolbox > > > > clc > > clear all > > syms c1 c2 c3 > > a = 2*(1064*c2 + 4461*c3 - 1031)*(c1^2 + c2^2 + c3^2 + 1) > > b = 3*(1064*c2 + 4461*c3 - 1031)*(c1^2 + c2^2 + c3^2 + 1) > > gcd (a,b). > > > > for such a simple problem, the an...

64bit matlab for windows x64??? is this in developement? whats the eta on it being available? ...

Hi eveyone, Just got a problem of changing the font size in matlab help window(the right hand side content window), they appear to be very small. My Matlab is R2009b and runs in a 64bit windows vista Home Premium environment. Thanks for paying attention!!! go to Preference->Fonts->Custom->HTML Proportional Text circle Custom, and select a larger font size problem solved "Bingqi Wang" <bing.wang09@imperial.ac.uk> wrote in message <hm4ksl$f1f$1@fred.mathworks.com>... > Hi eveyone, > > Just got a problem of changing the font size in matlab help window(the right hand side content window), they appear to be very small. > > My Matlab is R2009b and runs in a 64bit windows vista Home Premium environment. > > Thanks for paying attention!!! ...

I wanna use matlab C++ math library into VC++6.0, but my matlab is 7.1. if i wanna use matlab C++ math library to programme, how can i setup my VC link?? why matlab7.1 doesn't have "extern->include->cpp" file??? In using matlab C++ math library , what difference between matlab 6.X and matlab7.1??? ...

Hey Guys, it appears that my default symbolic toolbox for Matlab is maple by installation. In the meantime, our Maple licence expired so now I'm getting error message in ML e.g. after typing syms... In hlp doc I found one needs to set the environment variable MATLAB_SYMBOLIC to matlab. I'm sorry, I don't quite see how to do that. Can please someone give an explanation for dummies? Many thanks! ...

Dear Colleagues, I would like to call your kind attention to the updated website of the Soft Computing Research Group at the University of Veszprem (Hungary) http://www.fmt.vein.hu/softcomp/ You can download MATLAB Toolboxes: - Fuzzy Clustering MATLAB Toolbox - Genetic Programming MATLAB Toolbox - Interactive Evolutionary Strategy (EASy) MATLAB Toolbox - Constrained Fuzzy Model Identification for the FMID Toolbox independent MATLAB programs related to: - Data mining * Fuzzy clustering based time-series segmentation * Supervised Fuzzy Clustering for the Identification of Fuzzy Classifiers * Fuzzy Modeling with Multidimensional Membership Functions: Grey-Box Identification and Control Design * Compact TS-Fuzzy Models through Clustering and OLS plus FIS Model Reduction * Inconsistency Analysis of Labeled Data * Star plots - MATLAB files for Graphical Representation of trace elements of clinkers - Process control and monitoring * Feedback Linearizing Control Using Hybrid Neural Networks Identified by Sensitivity Approach * Incorporating Prior Knowledge in Cubic Spline Approximation - Application to the Identification of Reaction Kinetic Models * Identification and Control of Nonlinear Systems Using Fuzzy Hammerstein Models - A Simple Fuzzy Classifier based on manuscripts in PDF about - fuzzy model based process control and monitoring - fuzzy clustering and classification - incorpor...

Dear Colleagues, I would like to call your kind attention to the updated website of the Soft Computing Research Group at the University of Veszprem (Hungary) http://www.fmt.vein.hu/softcomp/ You can download MATLAB Toolboxes: - Fuzzy Clustering MATLAB Toolbox - Genetic Programming MATLAB Toolbox - Interactive Evolutionary Strategy (EASy) MATLAB Toolbox - Constrained Fuzzy Model Identification for the FMID Toolbox independent MATLAB programs related to: - Data mining * Fuzzy clustering based time-series segmentation * Supervised Fuzzy Clustering for the Identification of Fuzzy Classifiers * Fuzzy Modeling with Multidimensional Membership Functions: Grey-Box Identification and Control Design * Compact TS-Fuzzy Models through Clustering and OLS plus FIS Model Reduction * Inconsistency Analysis of Labeled Data * Star plots - MATLAB files for Graphical Representation of trace elements of clinkers - Process control and monitoring * Feedback Linearizing Control Using Hybrid Neural Networks Identified by Sensitivity Approach * Incorporating Prior Knowledge in Cubic Spline Approximation - Application to the Identification of Reaction Kinetic Models * Identification and Control of Nonlinear Systems Using Fuzzy Hammerstein Models - A Simple Fuzzy Classifier based on manuscripts in PDF about - fuzzy model based process control and monitoring - fuzzy clustering and classification - incorporation of a priori knowledge in the identif...

I've got the same problem. I'm running windows 7 professional 64bit and I cant install matlab... I've already tried with MATLAB 2009b and 2008a versions and the result is the same Miguel Veríssimo <miguelmverissimo@gmail.com> wrote in message <9c5693a8-f2d3-45a8-9d1d-c80a82a21e0c@a39g2000pre.googlegroups.com>... > I've got the same problem. I'm running windows 7 professional 64bit > and I cant install matlab... I've already tried with MATLAB 2009b and > 2008a versions and the result is the same actualy if its not working and it is giving the error while opening it then may be the theme needs to be changed. so before opening it make the theme BASIC. ...

Hi everybody, I am faced to a problem I am trying to solve for one week at full time. :-( I have a Matlab program without input argument. I have written it in a windows 64bits Matlab. I now need to translate this code into a java (Eclipse) source that will be used from a maximum 512MB Ram device. I cannot use the Matlab Builder JA because the MATLAB Compiler Runtime (MCR) needs at least 1GB Ram. I desperatly trying to find a solution, in vain! Nobody could help me? Is my problem clear enough? "lala " <thib712@hotmail.com> wrote in message <jjvlnh$7k3$1@newscl01ah.mathworks.com>... > Hi everybody, > > I am faced to a problem I am trying to solve for one week at full time. :-( > I have a Matlab program without input argument. > I have written it in a windows 64bits Matlab. > I now need to translate this code into a java (Eclipse) source that will be used from a maximum 512MB Ram device. I cannot use the Matlab Builder JA because the MATLAB Compiler Runtime (MCR) needs at least 1GB Ram. I desperatly trying to find a solution, in vain! ...

Hi Everybody, I'm trying to install matlab R2011b into my new laptop with windows 7 64 bit but I'm getting this error: Error window title: "Installer error" Error: "Exception calling main." I've already checked and the installer is able to reach my temp folder and the installation folder is on C:\ Any idea? Thank you very much in advance. Regards, Tiarfin "Tiarfin " <tiarfin@gmail.com> wrote in message news:jkf331$hrn$1@newscl01ah.mathworks.com... > Hi Everybody, > I'm trying to install matlab R2011b into my new laptop with windows 7 64 > bit but I'm getting this error: > > Error window title: "Installer error" > Error: "Exception calling main." > > I've already checked and the installer is able to reach my temp folder and > the installation folder is on C:\ > > Any idea? Please contact Technical Support for help with this installation issue. -- Steve Lord slord@mathworks.com To contact Technical Support use the Contact Us link on http://www.mathworks.com ...

Hi! Im interfacing Matlab from a C Application. Example: Engine *ep = engOpen("\0"); engEvalString(ep, "path(path,'/some/path/to/m-file')"); engEvalString(ep, "SOME_FUNCTION_IN_A_M_FILE"); I cannot use the path function prior to call a '.m' outside of the current search paths. Either sending 'cd' doesn't work. Does anybody know how to call a custom '.m' outside the default search paths? ...

hello, i want to put a condition on symbolic object but i can't do it for example: syms x if x<0 f=x^2 else f=0 end; it doesn't works :( help please. On 1/17/2012 3:46 AM, imen wrote: > hello, > i want to put a condition on symbolic object but i can't do it for example: > syms x > if x<0 > f=x^2 > else f=0 > end; > it doesn't works :( > help please. It might help to assign an actual value to the symbol x before doing the logical check on it. Without a value, it is just a symbol that refers to itself and nothing more. --Nasser "Nasser M. Abbasi" <nma@12000.org> wrote in message <jf3hi4$kde$1@speranza.aioe.org>... > On 1/17/2012 3:46 AM, imen wrote: > > hello, > > i want to put a condition on symbolic object but i can't do it for example: > > syms x > > if x<0 > > f=x^2 > > else f=0 > > end; > > it doesn't works :( > > help please. > > It might help to assign an actual value to the symbol x before > doing the logical check on it. Without a value, it is just a symbol > that refers to itself and nothing more. > > --Nasser "imen " <imen.debbabi86@gmail.com> wrote in message <jf3i4g$f8m$1@newscl01ah.mathworks.com>... > "Nasser M. Abbasi" <nma@12000.org> wrote in message <jf3hi4$kde$1@speranza.aioe.org>... > > On 1/17/2012 3:46 AM, imen wrote: > > > he...

Hello all, I would like to spawn multiple matlab processes from an '.m' script. Meaning, run an m-file from a 'parent' Matlab that launches, say, 8 more 'children' matlab processes. I'd like to do it in such a way that the same m-file in the 'parent' is able to close down, or kill, all the 'children' processes. Any suggestions? Joe ...

Hello All, I'm working with an aplication that use the matlab engine. I made the C++ program and it is working well in my pc with matlab 2007b, but the same very basic program shows an error when I tried to compile it in a pc with matlab R2010b. The error is about the icuuc32.dll. ¿Why is asking this DLL? How can I solve this?. Thanks¡ ...

greeting all, i'm using nonlcon(nonlinear inequality constraint) with GA from the toolbox provided by matlab. does anyone notice the extreme slowlness in evaluating nonlinear constraint as compared to other linear constraint? my problem for nonlinear constraint is as follow c(1)=x+y^2-2*ones(N,1) where x and y are Nx1 vector. which means if N increases, the size of constraint increases. and to clarify, the min problem is sometime like min c'z where z=[x;y], which means x and y are some range of variable within z(just a matter of problem formulation) well, is there anyone with other alternative or is it possible or method in including non-linear constraint directly to fitness function? (well, actually nonlcon deals nonlinear constraint by using Augmented Lagrangian Pattern Search from what i see from the help file, or am i wrong?) and one more question, is there anyone that attempt to attempt to apply mixed integer problem into the GA in matlab? For now, i can only switch before pure integer or pure real number problem, but not mixed at the moment. I will be trying to add in some repair operator to fix up the variable that needs to be integer and other remaining in real number. I'm not sure why you are using ga to solve your problem. Did you find fmincon unsatisfactory in any way? Alan Weiss MATLAB mathematical toolbox documentation On 5/10/2011 11:53 PM, terry wrote: > greeting all, > > i'm using nonlcon(nonlinear inequality constraint)...

I downloaded the MS visual C++ 2008 Express Edition and the SDK as detailed in http://www.mathworks.com/support/solutions/en/data/1-6IJJ3L/?solution=1-6IJJ3L My embedded function didnt work at the beginning because I did "mex -setup" before I installed my SDK. But after I installed the SDK, I ran "mex -setup" in Matlab once again and choose the MS visual C++2008 as my compiler. Then, my embedded matlab function worked. Thanks to the contribution from above! ...

Hi, is it possible to create dll in Matlab and then using it in other Matlab apllication? I've made a simple function and put it into dll. But when I try to use this library in other apllication written in matlab it doesn't works. Any idea? -- Pozdrawiam, e-Shrek hi e-shresk, I once created a matlab dll, and called it in c code. it worked. I guess you have to check whether you dll was built correctly or not. ps. why don't u call matlab function directly? Dnia Mon, 26 Oct 2009 07:19:04 +0000 (UTC), Jun napisa�(a): > hi e-shresk, > > I once created a matlab dll, and called it in c code. it worked. Hmmm. The function is very simple: ========================== function var_o = testlib(var_i) if var_i == '1', var_o = 'jest'; else var_o = 'brak'; end ========================== Compilation: mcc -W lib:xlib -T link:lib testlib After it, I have *.dll *.lib *.h Tryin' to load library: loadlibrary('xlib.dll','xlib.h'); The result is: Warning: Warnings messages were produced while parsing. Check the functions you intend to use for correctness. Warning text can be viewed using: [notfound,warnings]=loadlibrary(...) > In loadlibrary at 394 Where is the problem? > ps. why don't u call matlab function directly? I have a pack of functions that I wouldlike to use with few different matlab compiled programs. -- Pozdrawiam, e-Shrek On Oct 26, 1:47=A0pm, e-Shrek <e-Shrek.wyt...@wytni...

Dear friends, can you help me in creating n x n symbolic matrix like [a11 a12 ... a1n] [a21 a22 ... a2n] A = [ ... ] [an1 an2 ... ann ] Can anybody help me? Regards. Bhupala. "BHUPALA" <bhupala@gmail.com> wrote in message news:09744d62-04cb-4543-bb3a-95b45c87d0ac@x6g2000prc.googlegroups.com... > Dear friends, > > can you help me in creating n x n symbolic matrix like > > [a11 a12 ... a1n] > [a21 a22 ... a2n] > A = [ ... ] > [an1 an2 ... ann ] > > Can anybody help me? > > Regards. > > Bhupala. A = sym(zeros(n, n)); for rows = 1:n for cols = 1:n A(rows, cols) = sym(sprintf('a%d%d', rows, cols)); end end You should watch out if you want to create a moderately sized matrix like this -- is a111 element (1, 11) of A or element (11, 1)? I would personally use some separator between the row and column components of the sym variable name. -- Steve Lord slord@mathworks.com comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ ...

We have a MATLAB 7.12.0 compute engine consisting of 16 parallel CPUs (RH Linux). I then send output and display on a remote machine also running RH and MATLAB 7.12, if that matters. Now I'd like to display on a Windows machine instead; this machine has MATLAB R2010b. I asked our local administrator and he responded as follows: >In my understanding of matlab, you might be able to install >matlab locally on your windows machine and configure it to >connect client/server to penguin. Or you can install an X >windows application (Exceed/Xming) with IASO approval and >the assistance of the PC helpdesk. Then via putty you can >create an ssh tunnel to the server and send back the Matlab >display. Probably the answer is here. But if a step-by-step description exists elsewhere, or maybe different wording by someone would help me. Thank you. Andrew M. Neiderer US Army Research Laboratory ...

Many of you who post to this newsgroup are also regular contributors to the MATLAB Central File Exchange. Look for your favorite contributors on our File Exchange Author Profile page. You can read their profiles and see pictures: <http://www.mathworks.com/matlabcentral/reports/fileexchange/allProfiles/> In a random drawing, we recently awarded MATLAB jackets to three File Exchange authors with profile pages: Michele Giugliano, Andrey Egin, and Denis Gilbert. You can win a jacket, too. Just submit a new file to the File Exchange or update your author profile by December 2003 for a chance to win one of four MATLAB jackets. See the jacket below: <http://www.mathworks.com/matlabcentral/images/jeff3.jpg> Here are some interesting File Exchange facts: - Since its inception in 2001, visitors have downloaded more than 1.25 million submissions from the File Exchange. - In September 2003 alone, visitors downloaded 80,085 files, an average of 2670 a day! .... what if the prize was a free copy of the next version of Matlab :-) majb Min Poh wrote: ....or an offer for employment... aj "bourassa" <bourassa-m@rmc.ca> wrote in message news:3f9d507d$1@rmcnt03a.rmc.ca... > ... what if the prize was a free copy of the next version of Matlab :-) > > majb > > Min Poh wrote: > ...

Number of column: 5 Vector A: [ 2 4 6 7 8 ] Vector B : [ 5 7 8 10 1] Choice = 1 : Find the highest value Vector A : 8 Vector B: 10 The highest value : 10 Choice = 2 : Find the lowest value Vector A : 2 Vector B: 1 The highest value : 1 Choice = 3 : Find the average value of : Vector A Vector B "Syamil " <syamilsaid@gmail.com> wrote in message <inq3g8$hhd$1@fred.mathworks.com>... > Number of column: 5 > Vector A: [ 2 4 6 7 8 ] > Vector B : [ 5 7 8 10 1] > > Choice = 1 : Find the highest value > Vector A : 8 > Vector B: 10 > The highest value : 10 > > Choice = 2 : Find the lowest value > Vector A : 2 > Vector B: 1 > The highest value : 1 > > Choice = 3 : Find the average value of : > Vector A > Vector B Type in matlab: doc min doc max doc mean ...

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