Shoaibur Rahman

Baylor College of Medicine

Actif depuis 2014

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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])...

plus de 6 ans il y a | 1 réponse | 0

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réponse

Question

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...

plus de 6 ans il y a | 1 réponse | 0

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A soumis

Exclude elements from array or matrix
Exclude elements from array, and rows or columns from matrix

environ 9 ans il y a | 3 téléchargements |

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Customize plot graphics
Set custom graphics to plot

environ 9 ans il y a | 1 téléchargement |

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Shuffle a vector for multiple times and concatenate them
Shuffle a vector for multiple times and concatenate them

environ 9 ans il y a | 1 téléchargement |

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Calculate R-squared value
Calculation of r-squred value

environ 9 ans il y a | 1 téléchargement |

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Vertical line on a figure
Vertical Line in Matlab

environ 9 ans il y a | 1 téléchargement |

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Horizontal line on a figure
Horizontal Line in Matlab

environ 9 ans il y a | 2 téléchargements |

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Find peaks (maxima and minima) of a function
This function detects the transition points (maxima and minima) in a function like y = f(x)

environ 9 ans il y a | 1 téléchargement |

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A single title on top of a subplot
Use this function to print a title on the top of a group of subplots

environ 9 ans il y a | 1 téléchargement |

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General Linear Regression Model
Generalized form of single and multivariate regression model (linear and non-linear)

environ 9 ans il y a | 1 téléchargement |

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...

plus de 9 ans il y a | 1 réponse | 0

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Question

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 ...

plus de 9 ans il y a | 2 réponses | 0

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Réponse apportée
Receiving 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...

presque 10 ans il y a | 2

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Réponse apportée
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 ...

presque 10 ans il y a | 1

A résolu

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

presque 10 ans il y a

Réponse apportée
About 3D surface plot
a = ...your 100 x 1 x 51 data; bb = squeeze(a); surf(bb)

presque 10 ans il y a | 2

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Réponse apportée
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...

presque 10 ans il y a | 1

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Réponse apportée
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...

presque 10 ans il y a | 2

Réponse apportée
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)

presque 10 ans il y a | 1

Réponse apportée
Find a value with cell array.
A = your cell... out = A(cell2mat(A(:,1))==7,2)

presque 10 ans il y a | 1

Réponse apportée
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...

presque 10 ans il y a | 1

Réponse apportée
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]

environ 10 ans il y a | 1

Réponse apportée
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...

environ 10 ans il y a | 1

Réponse apportée
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...

environ 10 ans il y a | 1

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Réponse apportée
How to check two unbalanced matrix?
Another way may be: X=[1;2;3;4;5]; Y=[2]; Z = X(X==Y)

environ 10 ans il y a | 1

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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...

environ 10 ans il y a | 1

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how can i display a gray scale image instead of mapping 0,255 , between 0 , 127 ?
NewImage = 127*mat2gray(Image)

environ 10 ans il y a | 1

Réponse apportée
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...

environ 10 ans il y a | 1

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Réponse apportée
How can convert a image from type of double(unit16) to a grayscale image?
ImageGray = mat2gray(ImageDouble);

environ 10 ans il y a | 1