Matlab

Energy of signal
How can i calculate the Energy of the signal in Matlab When i try to calculate for positive half i am getting Energy at right frequency ! But some thing is wrong when i do it for whole signal i am not getting at -30 and +30... N=1024; dt=.001; t=0:dt*dt*(N-1); y=sin(2*pi*30*t); e=abs(fft(y))/(N); energy=e.^2; ... 28 May 2010 07:08

Reading a delimited file
I want to read a file that is organized with semicolons (;) as a delimeter. The file is organized into 4 columns where each row contains a variable name, value, units, in/out designation. Example: Variable.With.Various.Unique.Levels.name1;Value;Units;in Variable.With.Various.Unique.Levels.name2;Value;Units;o... 27 May 2010 17:02

ellipse points regularly spaced, or inverse of the incomplete
"Felipe G. Nievinski" <fgnievinski(a)gmail.com> wrote in message <htjlqp$e3q$1(a)news.acm.uiuc.edu>... I found this statement at <http://dlmf.nist.gov/19.25#v>: "[elliptic] integrals of the second kind, ... are not invertible in terms of single-valued functions" though I find the treatment given, in t... 26 May 2010 23:32

Inter-processor communication with RTW and vxWorks
We are in the early stages of porting our legacy C/C++ embedded control application to Matlab's Simulink/RTW. One of the features we need to replace is the shared memory comm we use for inter-processor communication. Our OS target is vxWorks. Was wondering if any one out there had any experience doing shared memory... 26 May 2010 15:48

generating correct signals / solver question
hi guys, i have been working with simulink for a few weeks now and i still try to understand a few things. i hope someone of you can help me with there "basic" questions: at first a general question concerning the solvers: i know the difference between the fixed step and the variable step solver, the fixed steps... 26 May 2010 15:48

saving data to master excel spreadsheet
I am trying to develop a GUI, which will allows me to query and import data from a master spreadsheet for data, but would like the option to be able to add data from another excel file into the master via my GUI. Currently, I would like the data to be added to the end of the current data in the sheet, without adding s... 26 May 2010 15:48

Adding noise types to image in matlab
Hello, I have problem with adding noise types to images in matlab can u please help about these noise types types : Uniform, Gaussian, Salt & Pepper, Rayleigh, Exponential and Erlang Noise thanks ... 26 May 2010 15:48

Stop plot from command line overwriting existing plot in a gui
Is there any way to "deselect" the axis in a GUI so that calling plot from the command line will plot to a new figure and not the axis the GUI figure? A very simplified version of the GUI is below, which demonstrates the problem. The original allows the user to input the x and y values, and determines the polynomia... 26 May 2010 15:48

wavelet transformates in filtering images
Hello.I need a GUI which adds Gaussian,SaltPepper and other noises on images.After, I have to use descomposition methods(wavelet 1D, 2D,dual Tree etc).also soft and hard methods,SSIM coef, to be applied on image and in final to make reconstruction of the image.please help me because I'm a beginner in MATLAB!Thanks a lo... 27 May 2010 04:53

MM1 Queue Simulation
Does anyone have code to simulate a simple MM1 queue. I've written a couple of attempts. One steps through with a "clock", while the other examines the births and service intervals. The problem is I get different results in both cases from the theory. If someone has some fairly simple code I might get an "aha" mome... 26 May 2010 14:41