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Ahmet Cecen


Georgia Institute of Technology

206 total contributions since 2012

Currently doing doctorate level research on Materials Informatics at the MINED group in Georgia Tech.

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Submitted


IsoSlicer
A GUI to help create transparent 3D isosurface maps of volumetric data.

7 months ago | 4 downloads |

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Submitted


Multivariate Polynomial Regression
Performs polynomial regression on multidimensional data.

11 months ago | 57 downloads |

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Answered
crop a binary mask without other regions
If your images always contain 2 clearly separated entities, use `bwconncomp` or `bwlabel`. Many ways to do this. For example:...

1 year ago | 1

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Speed up Matrix Subtraction for Euclidean Distance calculation
If you have the stats & ML toolbox: NS = createns(M1'); % Create Search Object for The Train Set Idx = knnsearch(NS,M2')...

1 year ago | 1

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What does this refer ?
All of these use cases have examples in documentation: Check out the first tip here: <https://www.mathworks.com/help/matlab...

1 year ago | 0

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How to convert a stack of medical images in the work space into .png without losing information?
for i = 1:104 currentImage = YourData(:,:,i); currentFileName = ['YourFileName', num2str(i), '.png']; imwrit...

1 year ago | 0

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How save data from cell to array?
Checkout <https://www.mathworks.com/help/matlab/ref/cell2mat.html cell2mat>.

1 year ago | 0

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What does NaN mean here?
Looks like the code intended to initialize a matrix filled with NaNs and does this by adding NaN to a zero matrix. Any number + ...

1 year ago | 1

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HI All ,Here i want to Reshape 2D images into 1D image vectors , why i get this error ? Error using '?? Transpose on ND array is not defined. Error in testauto (line 14) temp = reshape(img',r*c,1); .please help its urgent Thanks.
Not enough information, but it is likely that the image you are reading is a color image and is actually r by c by 3. I will als...

1 year ago | 0

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I have a 2 D matrix where each column is a set of data that is Weibull distributed. I want to use wblfit to get the parameters for each column of data without using for loop.
This should work faster than an explicit for loop: Result = splitapply(@(x1){wblfit(x1)},X,1:size(X,2)); Then each group...

1 year ago | 0

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Merging several row vectors in a single matrix
Naming your vectors A1,A2,A3 ... then assembling them like this is very inefficient. You want to either load them directly into ...

1 year ago | 0

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Compute that portion of a surface above a threshold
The problem here is that you appear to be committing a fundamental fallacy in how discrete data work. In your example case, you ...

1 year ago | 0

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How can I give my fit plot the same color as the data points?
Not super clear description, a picture would help but: Are you sure you don't mean to use the 'Color' property instead of 'ma...

1 year ago | 0

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how can I write the time function when I am plotting the convolution of two time continuous signals?
This question shows a lack of fundamental understanding of convolution. Make sure to read up on what convolution/correlation is ...

1 year ago | 0

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machine learning and image segmentation
I will give you a very rough suggestion with many assumptions, but this is the best I can do with the given information. It shou...

1 year ago | 0

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How can I convert known GPS coordinates to image pixels, and again image pixels to world GPS coordinates?
A simple start would be to get any two points: dx = abs(point2gpsx - point1gpsx)/abs(point2imagex - point1imagex) So by...

1 year ago | 0

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How do I read multiple images into matlab and save them in cells?
This is not directly solving your problem, but if you use the following instead, it will either work, or help you better figure ...

1 year ago | 0

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Using markup from an included file
I don't believe you can achieve this as easily as you want. The only way I can think of is: - Publish the markup file separat...

1 year ago | 0

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max between 2 timeseries signals
Maybe C=max(A.Data,B.Data)? You problem definition is a little vague, what exactly are you trying to find?

1 year ago | 0

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How can I create a generic vector containing other objects?
So you want a <https://www.mathworks.com/help/matlab/ref/cell.html Cell> array? Question is unclear.

1 year ago | 0

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Plotting a line which would include 95% of points above and below the regression line
Find your residual vector. Use prctile() on the residual vector to find the points at your upper and lower bounds. Solve t...

1 year ago | 0

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I need to produce a matrix that has one's along the diagonal from the upper right to the lower left
x(1:1:n,n:-1:1) =1; You cannot index points inside a matrix like that. MATLAB indexing reads like this: Matrix(a,b) => F...

1 year ago | 0

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image processing with parallel computing gives incorrect results
I am not very knowledgeable with the implementation of ParFor, but I would wager a guess the problem is your indexing: specifica...

1 year ago | 0

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Pulling matrix column data out of a cell
Say your Cell array is C: D = cell2mat(C); E = reshape(D(:),[500 29*6]); Now every 500 by 29 chunk in E is a matrix y...

1 year ago | 0

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How can I create a cell array by combining arrays?
maybe this? <https://www.mathworks.com/help/matlab/ref/mat2cell.html mat2cell> it is unclear what you are trying to accompli...

1 year ago | 1

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I'm trying to create a matrix of odd numbers, and I'm having some trouble. Any ideas? Thanks
You might have meant to do: odds = 1:2:lim as it is unclear what nums is in the scope of this function.

1 year ago | 0

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Transformation of variables in regression
You can use my <http://www.mathworks.com/matlabcentral/fileexchange/34918-multivariate-polynomial-regression MultiPolyRegress>. ...

1 year ago | 0

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What is the convolution of two probability distribution estimate (ksdensity in matlab)?
Use: [f,xi] = ksdensity(x,pts) To sample them at the same points, even if you have to sample a long tail of zeros to do ...

1 year ago | 0

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3D Voxel mask from geometry/ does plane intersect with volume
Well, the first problem you define is slightly more problematic, but the actual task you mention is easier. A Voronoi tessell...

1 year ago | 0

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