Matlab

plot help
I have 4 vectors (here is an example, my vectors are larger than that) (in time1 and time2 1992 represents year and 02 represents month) time1 = [199202 199512] data1 = [0.5 0.6] time2 = [199512 199812] data2 = [0.4 0.5] I know want to plot these vectors as: plot(time1, data1); hold on plot(time2, data2);... 20 Apr 2010 15:58

mex fortran
Hi, I am new to mexing with fortran. I set up succesfully the gfortran compiler but have not been able to run any code. I can compile succesfully the code: mex yprime95.f90 but then when I execute: yprime95(1, 1:4) I got the following error message: ??? Invalid MEX-file 'C:\Users\Downloads\examples\yp... 20 Apr 2010 15:58

How Discrete Fourier Simulink Block works
I looked under the mask of discrete fourier simulink block under Simpowersystem and I don't understand what algorithm is used to compute the magnitude and phase of a signal. Let t be the simulation time and suppose we are interested in fundamental freq of 60Hz (first harmonic): - To get the real part, it multiplies ... 20 Apr 2010 15:58

Confirming parameters of FMINSEARCH
Hello, I'm trying to confirm the parameters used in the FMINSEARCH function for the Nelder-Mead method nonlinear optimization (direct search) method to ensure that the necessary parameters are implemented for the convergence of my problem. I've tried looking through FMINSEARCH, OPTIMSET and OPTIMGET but haven't gotten ... 23 Apr 2010 20:58

Reading mat file in C++ (VS)
"Ehsan Salari" <ehsan.salari(a)gmail.com> wrote in message <hqkqi6$j5j$1(a)fred.mathworks.com>... I am trying to open a mat file in C++. In my mat file I have arrays of type double and integer and also numbers. I use the following piece of code: MATFile *pmat = matOpen(filename.c_str(), "r"); mxArray *pa = mat... 20 Apr 2010 15:58

referencing values in a for loop
On Apr 19, 3:45 pm, "Rachael " <raor...(a)gmail.com> wrote: Hi all, I am a beginning Matlab user so please respond simply! I am trying to select rows from a matrix based on an ID column that is basically a random individual number.  Then once I select those values I have another for loop that does simple m... 20 Apr 2010 15:58

Clarity on NN Tapped Delay Lines
Just for posterity, here is an example of the use of a custom NN using a tapped delay line. -Chris Troutner %=========================================================================> % CREATE A CUSTOM NEURAL NETWORK %Create a new network global net; ... 20 Apr 2010 15:58

extract data from powergui
hello Can anyone please tell me how i can extract data from the powergui FFT tool? I did my DC/AC inverter model and i need to include in my report the harmonics analysis from the powergui FFT tool. Thanks for yout time. ... 20 Apr 2010 15:58

Generation of Digitally reconstructed radiograph (DRR)
I am keen on generating a Digitally reconstructed radiograph (DRR) from 3D-CT image volume which is based on the volume rendering concept. Ray casting tries to find the intersections of a ray with all objects or voxels in the volume. Interpolation can be nearest-neighbor, tri-linear, etc. Can you point me a good so... 20 Apr 2010 15:58

int32 to double
Hi, I am connection matlab to access using the function posted in the "file exchange section" http://www.mathworks.com/matlabcentral/fileexchange/13621-ado-ole-database-connection when I select the columns I am getting the tables as cell arrays . Using cell2mat is resulting numbers in" int32 " format. How can I ... 20 Apr 2010 15:58