Matlab

Editing figure data points (not manually)
I have some figures with too many data points plotted, but not the actual data. I'm looking for some means to reduce the number of data points on the figure (by a factor of 10). Is there any efficient way to do it than first extracting all the data and then re-plotting? Thanks! ... 24 Jul 2010 13:24

While loop goes in infinite
I have tried following code for array st as mentioned Array: st = Columns 1 through 16 38 0 0 0 0 0 0 0 0 0 0 18 0 0 0 0 Columns 17 through 32 0 0 0 0 0 0 0 17 0 0 0 0 0 0 0 ... 30 Jul 2010 03:11

NEED MATLAB PROGRAMMER FOR BUILDING OPTIONS PORTFOLIO
Hi everyone, I need help in finding a Matlab programmer/company who has some background in Finance and Finance modelling preferably reasonable awareness of FX Options. Please feel free to contact me for this job (the duration would be around 2 weeks) OR please suggest companies or databases/websites where i can fi... 24 Jul 2010 08:00

hilbert filter for 60Hz
Hi, I’m trying to implement Hilbert transformer with a narrow ripple and my limited processing power. TW = 35; % Transition Width 35 Hz Apass = 0.02; % Passband Ripple (dB) -> variation 0.1% Fs = 1024; % Sampling Frequency h = fdesign.hilbert('TW,Ap', TW, Apass, Fs); Hd = design(h, 'equ... 24 Jul 2010 08:00

extraire une partie contouré
j'ai une image deja contouré et je veux extraire la region à l'interieur du contour ... 24 Jul 2010 06:56

Finding all zeros of Bivariate Polynomial system with complex
Torsten Hennig <Torsten.Hennig(a)umsicht.fhg.de> wrote in message <1580602684.28912.1279705562267.JavaMail.root(a)gallium.mathforum.org>... I have two bivariate polynomials f(x,y) and g(x,y) and I want to find all values of x and y for which f(x,y)=g(x,y)=0 simultaneously. The problem is that the coeffi... 24 Jul 2010 06:56

An exact simplification challenge - 98 (MeijerG)
Hello, Mathematica: MeijerG[{{1/10, 3/10, 2/5, 1/2, 7/10, 9/10, 9/10}, {}}, {{0, 1/5, 2/5, 2/5, 3/5, 4/5, 9/10}, {}}, 1] Maple: MeijerG([[1/10, 3/10, 2/5, 1/2, 7/10, 9/10, 9/10], []], [[9/10, 4/5, 3/5, 2/5, 2/5, 1/5, 0], []], 1) Can you "elementarize" this ? Cheers, Vladimir Bonda... 24 Jul 2010 05:52

reshape
Hi all i have this msg error in matlab :??? Error using ==> reshape Size arguments must be real integers. please haw can i solve this pb , Regards !! ... 24 Jul 2010 06:56

How do we make a function for summation of functions analytically?
We have made the function like: function R=summation(m) syms k; R=symsum('u[k].u[m-k]',k,0,m); When we call this function: Suppose summation(7) it returns ans=u[0].u[m]+u[1].u[m-1]+u[2].u[m-2]+u[3].u[m-3]+u[4].u[m-4]+u[5].u[m-5]+u[6].u[m-6]+u[7].u[m-7] It does not take the value of m inside the string. H... 24 Jul 2010 06:56

Impulse response, amplitude, phase, inverse Fourier
I have measured the threshold amplitude (A) of a low-pass filter as a function of sinusoidal frequency between 0.5 Hz and 50 Hz (the amplitude varies between 0 and 1 as a fraction of the mean of the sinusoid). I need to find the impulse response of the filter (i.e. convert the data from the frequency to the time domain... 24 Jul 2010 05:52