Matlab

help me with this in simulink: 1000 consecutive zero crossings
I tried to simulate a buck converter for variable input in simulnik. The converter is working fine except that when i tried to give feedback of the error, through a relational operator, i got an error message saying: 1000 consecutive zero crossings. What should i do? ... 14 May 2010 15:00

5-minute observations from data
Basically i've got data consisting of observations on the S&P index for 6 years which for example for year 1999, the csv looks like SYMBOL,DATE,TIME,PRICE,SIZE,G127,CORR,COND,EX SPY,19980102,09:31:41,97.3125,53500,0,0,,A SPY,19980102,09:31:43,97.3125,100,0,0,,M SPY,19980102,09:31:43,97.3125,200,0,0,,M SPY,... 17 May 2010 16:53

Sorting Cell Array
Hi, I am working with the following section of a cell structure, which I would like to sort into numerical order: [code] FImpedanceMag(i,j).Measurements{j,:} [/code] It contains the following data when evaluated: [code] ans = 1.6877e+009 ans = 7.9977e+008 ans = 8.1619e+008 ans = 8.0566... 15 May 2010 07:12

Mex error
Hi All, I am trying to learn to compile C programs using matlab and use a mac machine with xcode installed. When i try to compile the yprime.c which is an example given, I am getting the error /var/folders/72/72vSpyatGD8StPySp0L5DE+++TM/-Tmp-//cc5oqW4N.s:unknown:FATAL:can't create output file: yprime.o Can any... 14 May 2010 15:00

Embed the output of a Video Display Simulink Block to a predefined matlab GUI
Hello Mr Scott, I've read a very short preview of your book in googlebooks but I didn't find any answer to a problem of mine. Well actually I have constructed a Matlab GUI in order to change the parameters of 2 Simulink models. The second one deals with video compression on DM6437 target and the first one i... 14 May 2010 13:54

Formant distribution plane on matlab ?
Good evening to everyone, I'm encountering a problem. I have a data set where there are 4 formants recorded for 10 vowels. I separated each vowel in separate files, so I have 10 files each one for a vowel. Each file has 3 columns for F1, F2, and F3 (The 3 first formants, i'm not considering F0 in these files). I wo... 14 May 2010 13:54

First-order digital network
hi, i'm trying to make audio fingerprint systems, first step what i should do is to process audio signal by a first-order digital network in order to spectrally flatten the signal. How it should look in matlab? for example [wav, fs, nbits]=wavread('audio.wav'), what i should do next in order to process it by firs... 14 May 2010 13:54

optimization toolbox error message
hi everybody I´m new in this forum. What I would like to know is how can I fix an error on my Matlab program. The program is a Finite element updating program for structural static analysis that controls Ansys and get the results to Matlab that optimizes it with an objective function. The error message is about th... 18 May 2010 13:39

How can I change the precision in a figure
Hi all, I have a figure with x-axis ranges from 0.068295 to 0.068327. How can I display these value in the x-axis with the precision of 0.000001 instead of 0.0001? Thank you for your help. ... 14 May 2010 15:00

GA toolbox error
I m trying to desgin a controller which has 5 parameters using the GA toolbox. My fitness function needs to run a simulink model and get its output to obtain the error from the reference. Because GA uses a wide range of populations, the simulink model inside the fitness function does not run for some of those values gi... 18 May 2010 13:39