Matlab

Plot problems
Hello I am completely new to MatLAB, but I have read a few tutorials. I have some troubles with refining my plots where c-circles and t-tangents. Problems is that circles appear to not end at their intersection points but continue somehow to 500 (I know that I have defined x as 0:1:500 but if I change that it comes wi... 11 May 2010 15:38

help me wiith "AR model"
Hi everyone! I am beginner in MATLAB programming and i need your help. my question is: I have 3 sinusoidal signal and i add a random noise to sum of these signals. s_1=1*sin(2*pi*5*t); % create a 5 Hz sine wave s_2=.5*sin(2*pi*10*t); % create a 10 Hz sine wave s_3=3*sin(2*pi*1*t); ... 10 May 2010 01:13

Chi square test and Normal distribution??
does any one know how can I do Chi-Square test and Normal distribution in Matlab???? How can I define these function and do statistic test. Chi-Square test http://en.wikipedia.org/wiki/Chi-square_test Chis-square table http://www.ma.utexas.edu/users/davis/375/popecol/tables/chisq.html Normal distribution... 17 May 2010 14:38

cooperative spectrum sensing in cognitive radio
"eman mostafa" <eng_eman_mostafa2000(a)yahoo.com> wrote in message <hlp3rs$ehe$1(a)fred.mathworks.com>... i need matlab codes related to cooperative spectrum sensing in cognitive radio it is my graduation project hay ,do you know sensing with-out cooperation? if you don't know i will tell you if you know please tell... 8 May 2010 14:30

Numerical Integration
Hello Guys, I'm Having a problem at integration a function on matlab the function is as follow : Integral = &#8747;[&#981;(&#969;) e^(-j&#969;E) d&#969;] " integration from -&#8734; to +&#8734; " Where: &#981;(&#969;)=&#8719;[(1-j2&#969;&#955;(i))]^(-1) "multiplication" &#955; is vector of eigen values KNO... 10 May 2010 04:25

cognitive radio spectrum sensing
"anastasia micahels" <anastasia27(a)hotmail.co.uk> wrote in message <hntpnn$fnf$1(a)fred.mathworks.com>... hello everyone, i am working on spectrum sensing techniques for cognitive radio for my masters thesis and i am having troubles finding any codes related to my work...can any one offer me help. i will appreciate ... 8 May 2010 13:24

fitting model + plotting
Hi everybody, I have following matrices: x=1:1:5; y=1:1:3; z=[1.0000 1.5000 1.3000 1.0000 3.0000 3.0000 2.0000 2.1000 4.0000 6.0000 2.0000 1.8000 1.1000 5.0000 3.5000]; I have an algorithm to fit a curve to z data. for y=1, I fit my model to z(1,:) for y=2, I take t... 8 May 2010 13:24

creating diagonal matrix
Hi, Let say I have a vector B=[1 0] and I want to use this vector B repeating in this matrix A having size [8x16]. First, I initialize the matrix A with all zeros then I want to have the outcome as below: A= [1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0; 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0; 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0; ... 10 May 2010 12:04

SVDS inconsistency
Hello, when I run [~,~,V] = svds(M,j) multiple times on the same matrix, the results aren't always the same. I calculate the sum of square distances from V to M in order to check it. and the inconsistency gets worse for higher j's. sometimes the svds even returns a V matrix which has less than j columns. Th... 9 May 2010 13:13

Animation from Data tutorials?
I'm a student and I've just learned how to do a simple numerical simulation of an airplane in gliding flight. I have all the data describing the motion of the airplane over a certain amount of time, but now I want to visualize it by an animation of a plane at different states which represent the data. Does anyone know ... 8 May 2010 10:06