Matlab

fft of bearing stifness with respect to time
i m doing analysis on ball bearing. i have graph between stiffness of the bearing with respect to its orientation during one rotation. now i need to do fft of the stiffness vs time graph in order to get running frequency of one ball. please tell me how to do it in matlab ... 12 May 2010 08:02

Replacing part of matrix with zeros
Hi Everyone, I have a matrix A. Lets say its 5 x 10. Now I wish to perform an operation, where the first 2 columns, say, of A are replaced by all zeros. How is this done? Regards, Ulrik. ... 12 May 2010 04:48

Job offer: Software Control Engineer (Herts, England)
Position open until further notice. ... 12 May 2010 04:48

Simulation of Repetitive Control System
Dear All, Has anyone had any experience regarding simulation of repetitive control system in matlab. The simulation is either in command window or simulink. Repetitive control has been used either to reject/track periodic disturbances/references. I've been working on simulation for this, but I'm not satisfied with t... 12 May 2010 03:43

How to do arithmetic coding accurately?
The probability space is char prob range a1 0.001838 [0.998162, 1.0) a2 0.0975 [0.023162, 0.998162) a3 0.023162 [0.0, 0.023162) What I want is the arithmetic code for seq. a2a2a1a3a3.Here is my code to do so, global low high lowRange highRange lowRange = [0.9... 12 May 2010 10:14

Different axis and xlim
HI, I hava a BW picture that I want to display using imshow(). I want to add axis to the picture but i want to control the numbers on the axis. e.g: the picture is 900x360. when I display the picture the axes go from 0 to 900 and from 0 to 360. I want to change it to 0 to 100 and 0 to 200 but still see the whole ... 12 May 2010 10:14

differentiation
Hello, I'm having some trouble differentiating a curve I have. I don't really understand the command but I've got a plot of the Density in a lake and I need to find the derivative at a certain point. I've fit a ninth order polynomial to it but it's a horrbile fit, yet nothing else gets close and I need this to use thi... 12 May 2010 21:26

oblique projection in matlab
anyone knows hot to animate oblique projection in Matlab maybe? I need a help... please... thanks... ... 12 May 2010 03:43

imhist
Sir I have an error image so the matrix of image contains some negative values as well now I want to draw a histogram, but by using imhist I am able to show the positive values only, so what to do so that the histogram also contains the negative values as well. ... 12 May 2010 10:14

Iterating simulink data
I am running a control system in Simulink that outputs power to grid into a power electronic converter. Because I want to see the data in the PEC over the entire time that the control system is running, I'd like all of the data to be processed. The PEC, which has a much smaller sampling step, floods the memory after... 12 May 2010 02:39