Shoaibur Rahman

Baylor College of Medicine

Con actividad desde 2014

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Specialities: Systems Neuroscience, Machine Learning, Data Science, Statistical Inference, Signal Processing, and Image Processing

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Pregunta

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])...

más de 6 años hace | 0 respuestas | 0

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Pregunta

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...

más de 6 años hace | 0 respuestas | 0

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respuestas

Enviada

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

alrededor de 9 años hace | 3 descargas |

Enviada

Customize plot graphics
Set custom graphics to plot

alrededor de 9 años hace | 1 descarga |

Enviada

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

alrededor de 9 años hace | 1 descarga |

Enviada

Calculate R-squared value
Calculation of r-squred value

alrededor de 9 años hace | 1 descarga |

Enviada

Vertical line on a figure
Vertical Line in Matlab

alrededor de 9 años hace | 1 descarga |

Enviada

Horizontal line on a figure
Horizontal Line in Matlab

alrededor de 9 años hace | 2 descargas |

Enviada

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

alrededor de 9 años hace | 1 descarga |

Enviada

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

alrededor de 9 años hace | 1 descarga |

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

alrededor de 9 años hace | 1 descarga |

Pregunta

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...

más de 9 años hace | 1 respuesta | 0

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respuesta

Pregunta

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 ...

más de 9 años hace | 2 respuestas | 0

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Respondida
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...

casi 10 años hace | 2

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Respondida
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 ...

casi 10 años hace | 1

Resuelto

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

casi 10 años hace

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

casi 10 años hace | 2

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Respondida
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...

casi 10 años hace | 1

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Respondida
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...

casi 10 años hace | 2

Respondida
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)

casi 10 años hace | 1

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

casi 10 años hace | 1

Respondida
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...

casi 10 años hace | 1

Respondida
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]

alrededor de 10 años hace | 1

Respondida
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...

alrededor de 10 años hace | 1

Respondida
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...

alrededor de 10 años hace | 1

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

alrededor de 10 años hace | 1

Respondida
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...

alrededor de 10 años hace | 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)

alrededor de 10 años hace | 1

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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...

alrededor de 10 años hace | 1

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

alrededor de 10 años hace | 1