Shoaibur Rahman
Baylor College of Medicine
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Specialities: Systems Neuroscience, Machine Learning, Data Science, Statistical Inference, Signal Processing, and Image Processing
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Question
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])...
mer än 5 år ago | 0 answers | 0
0
answersQuestion
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...
mer än 5 år ago | 0 answers | 0
0
answersSubmitted
Exclude elements from array or matrix
Exclude elements from array, and rows or columns from matrix
ungefär 8 år ago | 4 downloads |
Submitted
Shuffle a vector for multiple times and concatenate them
Shuffle a vector for multiple times and concatenate them
ungefär 8 år ago | 1 download |
Submitted
Find peaks (maxima and minima) of a function
This function detects the transition points (maxima and minima) in a function like y = f(x)
ungefär 8 år ago | 1 download |
Submitted
A single title on top of a subplot
Use this function to print a title on the top of a group of subplots
ungefär 8 år ago | 1 download |
Submitted
General Linear Regression Model
Generalized form of single and multivariate regression model (linear and non-linear)
ungefär 8 år ago | 1 download |
Question
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...
mer än 8 år ago | 1 answer | 0
1
answerQuestion
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 ...
mer än 8 år ago | 2 answers | 0
2
answersReceiving 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...
ungefär 9 år ago | 2
| accepted
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 ...
ungefär 9 år ago | 1
Solved
Determine if input is odd
Given the input n, return true if n is odd or false if n is even.
ungefär 9 år ago
About 3D surface plot
a = ...your 100 x 1 x 51 data; bb = squeeze(a); surf(bb)
ungefär 9 år ago | 2
| accepted
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...
ungefär 9 år ago | 1
| accepted
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...
ungefär 9 år ago | 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)
ungefär 9 år ago | 1
Find a value with cell array.
A = your cell... out = A(cell2mat(A(:,1))==7,2)
ungefär 9 år ago | 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...
ungefär 9 år ago | 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]
ungefär 9 år ago | 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...
ungefär 9 år ago | 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...
ungefär 9 år ago | 1
| accepted
How to check two unbalanced matrix?
Another way may be: X=[1;2;3;4;5]; Y=[2]; Z = X(X==Y)
ungefär 9 år ago | 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...
ungefär 9 år ago | 1
how can i display a gray scale image instead of mapping 0,255 , between 0 , 127 ?
NewImage = 127*mat2gray(Image)
ungefär 9 år ago | 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...
ungefär 9 år ago | 1
| accepted
How can convert a image from type of double(unit16) to a grayscale image?
ImageGray = mat2gray(ImageDouble);
ungefär 9 år ago | 1