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Error using ==> plot
Hi Kash, I think you need to form the complex-valued matrices out of the two DWT trees and then sum the squared magnitudes from ...

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parameter must specify a logical value. What is a logical value?
a logical value would be x = logical(0); x = logical(1); or x = false; x = true; You do not wan...

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plot equation of plane
Which plane do you want to plot? For example, your P3 equation? syms x y z = 6*x+3*y+27; ezmesh(z)

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calculating energy of an image
You can calculate the energy as follows x = rand(64,64,16); J = 1; [Faf, Fsf] = FSfarras; [af, sf] = dualf...

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want to plot MSE for a given error
Assume x is one vector and y is another. you can think of x as your original and y the fit. x = randn(100,1); y = randn(...

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up sampling a wave file in MATLAB
I assume by upsampling you mean inserting zeros to increase the sampling rate and applying the interpolation filter. Have you...

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How to separate matrix row?
A = [ 1 2; 1 2; 1 2]; A(:,1) = zeros(size(A,1),1); Or if you want to keep your original A B = zeros(size(A)); ...

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best fit
It seems you want to summarize the 6 values in each column of the matrix. How about just using mean()? x = randn(6,83430); ...

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how to get full descriptive knowledge about the demo given in matlab
Have you looked at the reference pages?

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Change linespec of a line using only the figure handle.
Can't you just edit plot from the figure window, then click on the line? Or click on the object and do: hco = gco; ...

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How to randomly select data out of a dataset?
One way if you have the Statistics Toolbox is to use randsample x = randn(1000,1); y = randsample(length(x),800); A...

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Need help in designing a filter which removes all 1 Hz frequencies.
I answered this in your other post. If your sampling frequency is 0.0333 Hz, then you cannot resolve 1 Hz.

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d = fdesign.lowpass('Fp,Fst,Ap,Ast',1,3,0.5,40,60);
d = fdesign.lowpass('Fp,Fst,Ap,Ast',1,3,0.5,40,60); # 1 is the passband frequency # 3 is the stopband frequency so the regi...

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I want to plot PSD for my input data(meters)
Is your sampling interval in meters, or are you really saying that your measured variable is in meters? I'm assuming you jus...

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User associated with a license
You should contact MathWorks for any issues related to licensing.

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NEED to design a FIR LPF with cuff frequency at 1 Hz
The problem is that if you are really sampling only every 30 seconds, then you cannot accurately reproduce data at 1 Hz. If ...

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Unequal p-values when using tcdf and regstats
That is because the pvalue 5.1918e-06 is for a two-tailed hypothesis test. 1-tcdf(a_regstat.tstat.t(2),13) is only giv...

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NEED to design a FIR LPF with cuff frequency at 1 Hz
Nobody can tell you the answer to this question if you do not tell us your sampling frequency. Solve for Wn in the following ...

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Need help in designing a filter which removes all 1 Hz frequencies.
There are many ways. You have not told us your sampling frequency. Let me assume it is 60-Hz. d = fdesign.lowpass('Fp,Fst,...

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How to add 'AWGN' noise to a filtered data stream?
Use randn(). Add a vector the same size to your filtered data. Multiply the randn() vector by the standard deviation to give...

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filter coefficients
The unit step should be treated in your DSP book. For a sequence, the unit step sequence is the sequence which is 1 for n>=0 ...

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maths behind functions
Hi Tom, freqz.m does have an open implementation. So if you edit the M-file, freqz.m, you can see the code. The bulk of the work...

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Normalize to unit norm
If you want to normalize a vector to have unit L2 norm. x = randn(100,1); x = x./norm(x,2); norm(x,2)

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Error while storing matrix in a cell
Just do: imfcomponents{epoch} =IMF; For example: imfcomponents = cell(1799,1); IMF = randn(1000,5); ep...

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discrete fourier transform by matlab
x = [10 9 1 5 0 8 4]; xdft = fft(x); plot(abs(xdft)) A better example would be something like: Fs = 1000; ...

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How to form a periodogram?
Do you have the Signal Processing Toolbox? See periodogram >>doc periodogram If not, you can use fft()

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Random noise vs. White/Gaussian noise
rand() is a MATLAB random number generator. It generates random variables that follow a uniform probability distribution. randn(...

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Regsrding for loop with array
for nn = 1:8 if(any(A==nn)), disp('hi'); else disp('bye'); end end Obviously, replace disp('hi...

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Error using function "gensim"
You have to specify a sample time of -1 or an integer greater than or equal to 1. For example: gensim(net,'SampleTime',2...

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how to convert or import c file in matlab
See <http://www.mathworks.com/help/techdoc/matlab_external/f23224.html>

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