Matlab

Compute the hessian matrix numerically
Hello, I have an optimization problem. I make a ML estimation and the best solver for my problem is fminsearch. How do I get the hessian matrix for my solution? Is there a m-file or a command that could help me Thanks ... 24 Feb 2010 04:14

play&record experiment
Hi everyone, I'm making some play&record experiment with two separate multi-channel ASIO devices (for input and output). So, couple of issues I've encountered: 1) MATLAB can't handle multichannel devices. So I found pa-wavplay package by Matt Frear http://www.mathworks.com/matlabcentral/filee... 24 Feb 2010 03:08

multiple ber curves in simulink
hi i want to make multiple ber curves in simulink. means one ber curve for each modulation scheme such as QPSK, QAM, BPSK on one graph is it possible in simulink or i have to make it in matlab using hold command and then export my code to simulink using the EMF block plz help me. thanks in advance ... 24 Feb 2010 02:03

multiple ber curves in simulink
hi i want to make multiple ber curves in simulink. means one ber curve for each modulation scheme such as QPSK, QAM, BPSK on one graph is it possible in simulink or i have to make it in matlab using hold command and then export my code to simulink using the EMF block plz help me. thanks in advance ... 24 Feb 2010 02:03

matrix index of its position
hi.. i have matrix and i have to index, if i select 2 column, it has to display column no. let A be a matrix , after multiplying with permutation matrix for interchange of columns i want to how in the original matrix which columns have been changed and their order..... please help me in indexing this one ... 1 Mar 2010 14:07

Frequency Response Estimation
Hi I am trying to frequency response estimation of a dc-dc converter which has 50 Khz switching frequency. I am getting the following error ??? Error using ==> frestimate>LocalCheckDataTypeAndSampleTime at 729 In "frestimate(modelname,op,io,in)", it is required for each of the linearization input I/O points tha... 24 Feb 2010 02:03

small number rounded to zero
i type “1-0.000001” in command line and got 1.0000 how do i fix it so it will display 0.999999 ? Thanks, Cheng ... 24 Feb 2010 02:03

selecting a portion of graph using mouse....
Hi all, I am trying to select a portion of graph using mouse. On selection, it should display the property of the portion.(rectangular selection) how can I do so. any help would be appreciated. Thank U. ... 24 Feb 2010 02:02

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Handles structure in GUI (plotyy)
Hi everyone, I am a beginner and I have a question on the handles structure in GUI. I have made an axes where plot would be shown, and to set the xlimit, I used the following code. xlim(handles.axes2,[handles.x(1) handles.x(end)]) next, i want to plot 2 curves on handles.axes2, so I used: [AX, H1, H2] ... 24 Feb 2010 00:57