Matlab

multi peak surface 2D Gaussian fitting
I have a 2D data, xy plane is my pixels and z axis is the values corresponding to each pixel(like an image). I want to model my z data with Gaussians, how can I cluster my data and fit multi peak Gaussians? Is there such a package of Matlab or any other way, code etc.? Thanks a lot ... 9 Aug 2010 23:23

remove a specific frequency from emg signal
Hi, Jan Yes, I do understand what you are asking. But this is interesting, though. I am using emg as an timing parameter for optimization and I will need to tell when the muscle is active and when is not. I am used to do emg analysis on a specific software that operates on dos. But I wanna optimize my work doing this... 9 Aug 2010 16:47

split one line computation without duplicating data
Hello, The profiler says that this line of my code is taking up 50% of the time, (it's called many times in a forloop): A=reshape(bsxfun(@times,reshape(sum(reshape(A,[],N^2),2),1,[]),I),[],1); where size(I)=size(A) = [N^12 , 1] Someone (Walter Roberson) once said on this Newsgroup that executing many func... 10 Aug 2010 10:13

remove a specific frequency from emg signal
Just in case is the commands... here is where I am so far: % Tentantiva de aprender a trabalhar com emg no matlab % 30 de julho de 2010 clear all close all %load emg file [diretorio,file]=carrega('*.prn'); a=lesad(diretorio,file); y=a(:,2); %remove frames comlumn %remove DC mediaemg=mean(y); m=y... 9 Aug 2010 16:47

Does anyone else wish Matlab could handle Open Documents?
Hi All, Here is what I sent to Mathwork: =========================================== Title: Read/Write OpenDocument Spreadsheet files (.ods) Matlab can conveniently read and write Excel files. Non-Windows operating systems, however, don't have Excel, hence this convenient feature is usele... 10 Aug 2010 09:05

remove a specific frequency from emg signal
"Debora " <debi_can(a)yahoo.com.br> wrote in message <i3pks4$2fv$1(a)fred.mathworks.com>... "Wayne King" <wmkingty(a)gmail.com> wrote in message <i3pjit$9sd$1(a)fred.mathworks.com>... "Debora " <debi_can(a)yahoo.com.br> wrote in message <i3pj0j$30v$1(a)fred.mathworks.com>... Hi, Wayne. This is actuall... 9 Aug 2010 16:47

function vs script memory
Hi everyone, I have a memory-demanding function (call it memoryDemanding.m), which works perfectly fine when it is called as a function. I basically execute the command: a=memoryDemanding(b,c); and it works. However, if I go into memoryDemanding.m, and comment the lines that make it a function rather than a... 9 Aug 2010 19:00

remove a specific frequency from emg signal
"Wayne King" <wmkingty(a)gmail.com> wrote in message <i3pjit$9sd$1(a)fred.mathworks.com>... "Debora " <debi_can(a)yahoo.com.br> wrote in message <i3pj0j$30v$1(a)fred.mathworks.com>... Hi, Wayne. This is actually driving me insane. I do not have the necessary knowledge to understand the parameters, so I can't... 9 Aug 2010 15:40

remove a specific frequency from emg signal
Dear Debora, In fact, when I used a bortec electromyographer I did not have this low frequencies noise, but this new equipment saturates in really low frequencies. Ok, I assume, you are sure that this is noise. And I think, you've understood my question, because for the kind of investigations I perform, the 20 ... 9 Aug 2010 15:40

remove a specific frequency from emg signal
"Debora " <debi_can(a)yahoo.com.br> wrote in message <i3pj0j$30v$1(a)fred.mathworks.com>... Hi, Wayne. This is actually driving me insane. I do not have the necessary knowledge to understand the parameters, so I can't change what you wrote to make it work. You design - thank you for that - filtered all the... 9 Aug 2010 15:40