Shoaibur Rahman
Baylor College of Medicine
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Frequency scaling of audio signals
I have an audio signal x[n], whose frequency varies over time. It's FT is X[k]. I want to reconstruct an audio signal (x_hat[n])...
oltre 6 anni fa | 0 risposte | 0
0
risposteDomanda
Inverse Fourier Transformation with a function in the exponent
I have a signal x[n] with it's Fourier Transform X[k]. I want a frequency-warped signal (x_warp[n]) by taking the inverse Fourie...
oltre 6 anni fa | 0 risposte | 0
0
risposteDomanda
Shuffling a vector for n times to generate a new vector
A is a vector. I want to shuffle its elements for n times to generate a new vector. For example: A = [3 5 1]; out = [Shu...
quasi 10 anni fa | 1 risposta | 0
1
rispostaDomanda
Generating a long vector from two other vectors
I got stuck with a (may be) simple problem. Here are two vectors, like: a = [20 13 24 ...]; b = [3 2 4 ...]; How can ...
quasi 10 anni fa | 2 risposte | 0
2
risposteReceiving Matrix Dimensions Do Not Agree Error
Instead of Y use Y transpose as Y' in the last line of your code. X=inv(A)*Y' However if you use the following line inst...
circa 10 anni fa | 2
| accettato
How to delete a row from a Financial Time Series?
This works here, delete rows 2 from 4: A = [1 2 3; 4 5 6; 7 8 9; 2 4 6; 1 3 5]; A(2:4,:)=[] When using your code, do ...
circa 10 anni fa | 1
About 3D surface plot
a = ...your 100 x 1 x 51 data; bb = squeeze(a); surf(bb)
circa 10 anni fa | 2
| accettato
Bump --> How to change tick label fonts in Matlab figure
Here is an example on how you could use set function to accomplish your job. Delete any pairs of input arguments if not required...
circa 10 anni fa | 1
| accettato
how to convert an image into bits???
It is not clear to me exactly what is your goal? Are you trying to convert image pixels into binary bits? If so, you can use dec...
circa 10 anni fa | 2
Save cubic spline coefficients to use as response in regression
pp = spline(x,y); NewValue = [1 2]; % may be scaler or vector out = ppval(pp,NewValue)
circa 10 anni fa | 1
Find a value with cell array.
A = your cell... out = A(cell2mat(A(:,1))==7,2)
circa 10 anni fa | 1
how to calculate a serie of a function with two variables
% xi eta x =[1 2;... 3 4;... 4 5;... 6 7]; y = sum(x) % only sum of all elements alon...
circa 10 anni fa | 1
How can I fill a matrix column with dta coming from another matrix according to index
A = [(1:9)' ones(9,1)]; B = [1 10; 2 10; 4 10; 7 10]; C = NaN(size(A,1),1); C(B(:,1)) = B(:,2); C = [A C]
circa 10 anni fa | 1
how to find peaks in jpeg image
You can try with Mablab's findpeaks function, or see the attached code in file exchange: <http://www.mathworks.com/matlabcent...
circa 10 anni fa | 1
I need to match following images
There are many sophisticated methods to do so. However, you can try with: out = ssim(TestImage,refImage) This computes t...
circa 10 anni fa | 1
| accettato
How to check two unbalanced matrix?
Another way may be: X=[1;2;3;4;5]; Y=[2]; Z = X(X==Y)
circa 10 anni fa | 1
how to crop an image
I don't see any image attached. Anyway, you can try with: *roipoly* to select the image region and crop manually, or *imcrop...
circa 10 anni fa | 1
how can i display a gray scale image instead of mapping 0,255 , between 0 , 127 ?
NewImage = 127*mat2gray(Image)
circa 10 anni fa | 1
A simple fsolve problem from a MATLAB beginner
Define underwoodroot function separately, and call them from another m-file. In one m-file, write the following code, and sav...
oltre 10 anni fa | 1
| accettato
How can convert a image from type of double(unit16) to a grayscale image?
ImageGray = mat2gray(ImageDouble);
oltre 10 anni fa | 1
how can i find a fuction which define input and output of a system?
Use: p = polyfit(x,y,n) % n is degree of polynomial, use a value that best fit your data To check the fitting: y_fi...
oltre 10 anni fa | 2
| accettato
How to concatenate several matrices into one matrix?
Perhaps, you mistyped. It is C = [A; B] for different number of rows, but similar number of columns. Anyway, how your matrices a...
oltre 10 anni fa | 3
| accettato
Multi level sorting and filtering
[~, ~, D] = xlsread('Multilevel_sorting.xlsx'); A = D(3:end,1:2); % your data in table 1 G = {'Group1','Group2','Gro...
oltre 10 anni fa | 1
Acceleration vs Time data into FFT
Define the number of DFT points N, and then perform the fft. N = pow2(nextpow2(length(signal))); y = fft(signal,N); ...
oltre 10 anni fa | 1
Recode strings in Cell array
indx = 0; for k = 1:size(codes,1) if strcmp(codes(k,1),'Home') && strcmp(codes(k,2),'5') indx = indx+1; ...
oltre 10 anni fa | 1
| accettato
Solving system of nonlinear euations
syms x y [x,y] = vpasolve(x^2 + y^3 == 1, 2*x + 3*y == 4, x,y)
oltre 10 anni fa | 1
| accettato
manually draw shapes (like using a pencil to draw on figure) on opened image
Try: roipoly
oltre 10 anni fa | 1
| accettato
How Can I Assign variable Name?
x = 1:5; eval([datestr(date,'mmmm_dd_yyyy') '= x']); x is stored in a new variable named based on today's date. If you r...
oltre 10 anni fa | 1
Compound Poisson Distribution Model
I am not sure if I understand your question correctly. I guess once you get P, then you would like to choose its elements random...
oltre 10 anni fa | 1
| accettato
How is this an exponential curve?
Convert your difference equation into differential equation: y(i+1) = y(i)-y(i)*h; y(i+1) - y(i) = -y(i)*h; (y(i+1) -...
oltre 10 anni fa | 1
| accettato
