Matlab

Classify Function
Hi, I tried to use classify function with Mahalanobis method. I got the follow error: ??? Error using ==> classify at 298 The covariance matrix of each group in TRAINING must be positive definite. what that it means? What should I do about? This is the code [P, T, Eig] = princomp(spec'); T1=T(:,1... 29 Nov 2009 21:13

wrong compiler parameters using rtw
Hello, when I try to run the rtw_demos for the embedded coder, I got the error message : ### Compiling "rtwdemo_PCG_Eval_P1_sfun.c" cl.exe /c /Zp8 /GR /W3 /EHs /D_CRT_SECURE_NO_DEPRECATE /D_SCL_SECURE_NO_DEPRECATE /D_SECURE_SCL=0 /DMATLAB_MEX_FILE /nologo /MD /I "c:\matlab\work\rtw_demos\sfprj\build\rtwdemo_pc... 26 Nov 2009 08:38

help,Symbolic math toolbox
hi guys i have a problem with the symbolic math toolbox. I have a function a=inline('(n+1)/n'); I want to prove that a (n)> a (n +1) but this can not be calculated with the symbolic math toolbox. how can I do????? thanks Flo ... 26 Nov 2009 09:43

Multi Constraint Fitness function In GA
well , this is my problem : How can I deal with GA in matlab when my fitness function has 8 separate constraint ? Does Matlab just accept 2 constarint function or what ? Thank you in advance :D ... 28 Nov 2009 20:05

Data store block problem during minor time steps
I have some problems with the behaviour of Simulink during minor time steps for continuos solvers. The problem is related with Data Store blocks. General structure of the problematic model is as such: A is the data store name Data Store Read Block of A->Switch-Case->Various Switch Case Action Subsystems(There are ... 26 Nov 2009 07:33

Histogram valley
hello everybody, I want to know if exist a function or template in matlab that can give me the valley of an histogram (it's very urgent). Thanks in advance!!! ... 29 Nov 2009 12:22

error while installing Mathlab r2008b
Hi all, i have a question, i try to install Matlab r2008b on my laptop, but i get the error: "ATTENTION! .Net Framework Prerequisites Fix has nog been installed yet. The application may fail to install correctly because of this, choose Cancel to terminate the installation." Maybe someone can tell me how to fix th... 26 Nov 2009 06:28

SINR simulation
I am tring to calculate BER of BPSK in OFDM system. In this OFDM system, I use SINR instead of SNR. SINR includes, (1) AWGN (thermal noise) (2) interferences caused by phase noise (ICI) which behaves as gaussian noise with variance of "sigma^2". In this case, please somebody show me how to calcurete BER wit... 26 Nov 2009 02:06

Gaussian surface fit for image intensity peak finding
First my thank for anyone who is reading this. Basically I have an image of particles shined with laser. So the intensity of each particle is close to a Gaussian Surface. I have already define and isolated each particle into a small intensity matrix, and pixels that are not likely to be part of the Gaussian are ... 25 Nov 2009 18:20

Space Vector Modulation
I am also facing the same problem.. I am implementing for both the rectifiers i.e. 3 phase current source and voltage source.. Not even in this i did DPC and many other techniques lbut for some i am not getting results either dc output becomes zero or input current has two many harmonics.. whether it is SVM, DPC, VF-DP... 25 Nov 2009 14:55