[matlab] Forum Topics

In Matlab, is it possible to have an array where each element is a matrix?

Dear fellows. i am student of MS Electrical engineering...and now i am thinking to star my Thesis.....for this i iahve selected the topic "Calculation of Very Fast Transients in Gas Insulated Substations and its modeling using MATLAB simulink." now please tell me that weather i can do this on MATLAB …

I am calling C function from MATLAB using mex-files. The C function has a few static variables. I want to remove the static variables from the memory between consecitive calls to the C function. It is possible to do that without manually making all the variables in the C function …

hi all, i have a matlab problem when i write this program (which is simple :) since im a beginner) clear all close all clc [x,y]=meshgrid(-2:.1:2); z=x.*exp(-((x-y.^2).^2+y.^2)); mesh(x,y,z),title('mesh'):) hidden off colormap hot % cool,bone,copper,pink,jet,gray colorbar figure contour(x,y,z),title('contour') figure surf(x,y,z),title('surf') figure meshc(x,y,z),title('meshc') figure meshz(x,y,z),title('meshz') figure surfc(x,y,z),title('surfc') figure waterfall(x,y,z),title('waterfall') it gives me …

Hi anyone knows how to add colormap to my plots on the polar graph? thx title([COLOR=#a020f0]'Hodograph Displaying Change of Wind Speed and Direction with Height'[/COLOR],[COLOR=#a020f0]'Fontsize'[/COLOR],12) [COLOR=#228b22]% change working directory to data directory [/COLOR]cd [COLOR=#a020f0]C:\weatherdata\total [/COLOR]number_of_files=length(dir)-4; [COLOR=#0000ff]for[/COLOR][COLOR=#000000] n=1:number_of_files [/COLOR] s=load([[COLOR=#a020f0]'D'[/COLOR],num2str(n),[COLOR=#a020f0]'.txt'[/COLOR]]); [COLOR=#228b22]% specify wind speed and direction variables [/COLOR]wdir = s(12,:); speed …

Hi! I am Mahanta, a final student of communication enginerring. I'm recently doing a project regarding modulation algorithms by using matlab version 6.5. I'v built up a simple NRZI encoding algorithm2 convert the binary inputs into analog signal. Ayw, when i come2 the effort adding bit stuffing in this NRZI, …

Hey guys. Ive been having problems with something. Im trying to load a picture and put random dots on a square part of that image. Right now I got it to put dots on the whole image but I cant seem to get it to just a certain section of …

i am searching for Matlab or Simulink code for a beamformer with emphasis on LMS and RLS algorithms thank you for any help, links, ...

I wrote this program in MATLAB that converts units (for homework). My teacher doesn't like MATLAB but I do, so I've decided to make everything a bit fancy and a bit overboard. Thus far I've made my program to pop up a menu where in which you pick a unit …

Hi everyone How are you, hope good. I am new to this forum and if there is anything that I included here which I am not supposed to have, pls let me know. However,can you please help me with matlab. I want to built a classifier to use in predicting …

I nees a simple MATLAB program to verify the given input figure is triangle..wanted immediatedly reply the link or the direct code soon:sad:

I'm currently working on a homework problem in simulating a vehicle monitoring system. The problem is with my loop to start the problem when I want to end the program all the user should do is press two and the program will break to the very end. However this does …

well I have to solve coupled partial differential eq..... 1st pde contains only 1 variable C(x,t) while 2nd pde contains both C(x,t) and T(x,t) Now 1st pde is independent of 2nd and hence can be solved in matlab 7 . But 2nd pde contains 2 variables C&T both function of …

Hi, My name is Jennifer.Iam new to Matlab programming.Iam working on reducing the noise content in audio communication.Iam using Hamning codes for the same.I have a sample code with me,which iam uploading in a zip file.Iam unable to understand how it works.Can someone please explain me how the code is …

Hello guyzz.... is there any1 tat know Matlab here? coz i have a doubt in one of my Matlab question and i hope some1 can help me wif it... thanx...

Hi, Any1 knows how to extract the coordinates of the plotted data points on a graph in Matlab? THx

hello there i have a matlab program that plots an equation. now i need to display this plot on a vb6 form. any idea how i can do it? also will this vb code work if the clients system doesnt have matlab installed in it? hoping to get some help. …

Hey guys, in matlab when u do a loop(something like this): [COLOR=red]for i=1:3[/COLOR] [COLOR=red]a= 2*i[/COLOR] [COLOR=red]end[/COLOR] You get a=2 a=6 a=9 any idea how do i assign the 3 answers(a) names so that i can calculate the product of all 3 answers?

Can anyone teach me how to plot the line of best fit in this graph? Matlab keeps gving me error message that polymial is not uniquie when i use polyfit() command THx % change working directory to data directory cd C:\weatherdata number_of_files=length(dir)-3; for n=3:number_of_files s=load(['D',num2str(n),'.txt']); % define y as height …

is there some one done some work on 16QAM modulation over satellite link... coz i am trying to implement 16QAM modulation for satellite link but i am not getting how to pass my signal trough satellite transpponder to add noise into signal hence nonlinearity as transponder amplifies the signal it …

Hi...I'm very new to Matlab, I am in need of matlab prog for......... how to find the number of spike that crosses a threshold value ifor a given signal....... Can anyone please help me?? with lot of thanks...........

Hi to all, I want to ask how can I load files with for loop? My file names are like D1,D2,D3 and so on.. THen how do i assign the filename variable so that Matlab recognises it? I tried using this code but it seemed that Matlab recognised the a …

Dear Guys... I really need a help...I have this PASCAL codes which i nee dthem to be translated to either in MATLAB or C codes....Do anyone knows how to do it? I have a short time...Its for my project...Is there any software to help me?? Hope to get a reply …

I have matlab 7 installed. When i start it, the thing starts and it says that its initializing. Butn once that is done, it instantly closes on its own. :eek: Its really frustrating, cuz i know there is nothng wrong with the intalling files, as it is working fine in …

Hi all! [COLOR=black]Since yesterday, i have had problem by using "regexp" in MATLAB. Actualy, it is not the first time fro me to use "regexp", but now it gives me error. It says[/COLOR] [COLOR=red]??? Reference to non-existent element of a cell array.[/COLOR] [COLOR=black]I want to extract some part from my …

HI EVERYONE! i am wondering if anyone can help with the wavplay function. i need to generate the piano octave do, re,me... in matlab using this function. i know that the parameters of this function are wavplay(y, Fs). i am having difficulty understanding what y is and how to use …

Could any1 help me plzzzz. PLz teach me how to plot coordinates on a map given the initial lat and lon and the bearing and distance to the destination. thx

matlab 7 04 has a neural network tool box in it with the GUI for creating new networks with a set of training algorithms(it doesnt have ART). can anyone working with matlab for neural networks tell me how to create more hidden layers for the network and change the network …

Hi, I want to write a code in Matlab, that will find a best fit. I have 4 columns of values. The Red, Green and blue values and in the fourth column the temperature values. I want matlab to intelligently find me the best corelation between the RGB values and …

i want to write an awgn channel model in matlab. I know there is a predifined function awgn(..) but can somebody please help me with mathematical details of the awgn channel model. Thank you.

Hi all, I'm an experienced programmer in C, C++, and Java, and I'm new to this site. I was wondering if this would be an appropriate place to post a Matlab question. Any Matlab gurus out there? I have a bunch of data files of 10,000 -dimensional vectors that I'm …

hi i'm not sure how to start this program. The program is: to take in a set of x and y data, perform the least squares regression, and use the coefficients to predict values for the x values given and print the x, y and predicted y values. Input should …

Hello there, I wonder whether anyone use Matlab here? if so, please help me to set the properties for figure function, so that it can display a caption instead of the default Figure1, Figure2 ... thanks.

hi guys I'm a final year student, in engineering. i've just signed up to this forum. Hope all is good. i'd appreciate any help. I have a piece of matlab code which used to work like last year. but i am having some trouble with it now. Before i f …

help me solve this...what i need is if anybody can change this codes from part 2 to part 5 but still use the same concept. the output must in negative and positive value. pls email [email protected] % PART I --------The calculation of deflection and effective stiffness for a force at …

help me solve this...what i need is if anybody can change this codes from part 2 to part 5 but still use the same concept. the output must in negative and positive value. pls email [email protected] % PART I --------The calculation of deflection and effective stiffness for a force at …

help me solve this...what i need is if anybody can change this codes from part 2 to part 5 but still use the same concept. the output must in negative and positive value. pls email [email protected] % PART I --------The calculation of deflection and effective stiffness for a force at …

can you have more than one colormap on a matlab axes object? thanks

matlab 7 04 has a neural network tool box in it with the GUI for creating new networks with a set of training algorithms(it doesnt have ART). can anyone working with matlab for neural networks tell me how to create more hidden layers for the network and change the network …

hi, i'm a final yr student. currently i need to write a matlab program which requires the use of an optimising program (fmincon) i'm very new to matlab and i have no idea on writting any of the codes. i was wondering if there is any useful website or reference …

Hello Everyone, I am sorry to post this in the java forum but I was not sure where to post this so if you know of a better place in here, let me know. I already tried the computer and engineering forum and I figured Java people would know Matlab. …

Hello Everyone, I was not sure where to post this but if you know of a better place in here, let me know. I am working on the incorporation of a toolbox of functions my company wrote into Matlab. The functions are all in Matlab. I am trying to find …

Hello everyone! I am an Aerospace Engineer who will be spending the next few years of my life becoming alot more familiar with programming. I am pretty familiar with procedural things in Matlab and Fortan (77&90). I have helped to construct a Fortran 90 library (while I was in college, …

hey all, I just joined this community. I have been programming quite a bit in C/C++, however, this is the first time i am doing something like this. I have the Microsoft VC++ 6 package. The idea is to use the functions i have already written in the past( a …

:confused: I have to finish writing a code for the game FIZZ-BUZZ in two days. I have been working on my code for over one week but can't get it to work. I would be glad if anyone could halp me out here. Thanks

Anyone knows if there's a program to automatically convert from C++ to matlab? Or are there functions in matlab which i can use such that i can call the c++ program in matlab environment? I got a huge chunk of programming codes, coded using perl and c++. From the matlab …

[ASCII 44100Hz, Channels: 1, Samples: 43056, Flags: 0] -0.106754 -0.106540 -0.106479 -0.105838 -0.105930 -0.106296 -0.105899 -0.105045 -0.105167 -0.105899 -0.105625 -0.105564 -0.105289 -0.105441 -0.105411 -0.105869 -0.105686 -0.104221 -0.104556 Above is some part of the ASCII i copy and paste in the editor in matlab. what should i add in the editor …

Hi, New to Matlab, having a slight problem figuring this one out. I'm reading in a series of matlab structures entitled 'v1', 'v2', etc..., needing to plot some info in these structures. Not sure about the best way to do it, so far: for i = 1:100 n1 = join('','v', …

Hi...I'm very new to Matlab, I need urgent with a program of mine. Can anyone please help me?? thanks a million. The following is the error message I get everytime I run program 1: ??? Error using ==> optimset Expected argument 2 to be a string parameter name or an …

I have taken a trace of an ECG sampled at 360HZ. from the following website: [url]http://www.physionet.org/physiobank/database/mitdb/[/url] I have to contaminate it with an artificial 50Hz sinusoid. I am working on MATLAB. I imported the .dat file got from the website to the Signal Processing tool in MATLAB. I have also …