Answered
How can I place spheres along a circle/ring ?
See example below. All relevant functions used to generate this example can be found <https://drive.google.com/open?id=11Rc5WKrq...

7 years ago | 1

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Answered
Is it possible to plot Surfaces at specified coordinates?
If in addition to the vertices sampled from the surfaces you also have the connectivity information among the vertices, you can ...

7 years ago | 0

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How to plot a function on a cylinder surface
Here is an example: % Right cylinder parameters z_min=0; % lower cut-off point z_max=4; % upper cut-off point ...

7 years ago | 2

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Answered
Is it posible in Matlab to model surface using spherical harmonics (SH) basing on 3d data? If yes, how can I do it.
If the surface in question is closed (i.e., no boundaries) and is genus-0 (i.e., ho holes or handles), then it is indeed possibl...

7 years ago | 0

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Answered
solving system of equations using singular value decomposition and fsolve
This is an overdetermined system (i.e., number of equations > number of variables). You can obtain least squares solution as X=(...

7 years ago | 1

Answered
How do I display 55x305x4 .mat file as an image in Matlab and save it ?
% Data array A=Position3DGrid; % Convert to uint8 I_min=min(A(:)); I_max=max(A(:)); A=uint8(255*(A-I_min)/(...

7 years ago | 0

Answered
From .stl to mathematical function. Is it possible?
If the object is has a relatively simple geometry and you want to get a compact description of its shape, one of the following r...

7 years ago | 1

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Answered
How can I accurately plot the centroid of black dots in MATLAB?
% Get the image im=imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/120388/MATLAB_QUESTION.PNG'); ...

7 years ago | 0

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Answered
Finding the part of a larger matrix that is most similar to a smaller matrix
Here is another example, in case you dont have an Image Processing Toolbox: % Random N-by-N matrix N=1E3; % ma...

7 years ago | 0

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open an image in another image
Here is an example: im1=imread('peppers.png'); im2=imread('football.jpg'); im3=im1; im3(1:size(im2,1),1:si...

7 years ago | 0

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Answered
How to hightlight the mask in a image
Here you go: im=imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/119871/test1.png'); % grayscale ...

7 years ago | 0

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Converting a stack of .bmp images into an .stl file
(1) Segment the object of interest in your 3D image, (2) Reconstruct boundary of the segmented object using 'isosurface' func...

7 years ago | 0

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could anyone tell me how to save the values while the code is getting executed
save('FileName.m','name_of_variable_you_want_to_save')

7 years ago | 0

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How i can convert cell (each element in cell with different length) to array?
Is this kind of what you are looking for? ex = {[1,2,4,5,7,11,12],[1,3,4,5,7,11,12],[1,2,4,6,5,7,11,12],[1,3,4,6,5,7,11,12]...

7 years ago | 0

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Answered
how to find maximum value in a matrix?
Demo of local search based on 4-connected neighbourhood: <</matlabcentral/answers/uploaded_files/119785/conn_4.jpg>> Demo ...

7 years ago | 1

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Answered
How to divide the brain segmented slices in left and right compartments (halves)?
The simplest way to approach your problem is to (1) Aggregate all (segmented) slices from a given 3D image to form a volume ...

7 years ago | 0

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3D array permutation
Suppose you have G, which is a Y-by-X-by-Z 3D array, then i-th xy slice: G_yx=G(:,:,i); % Y-by-X array i-th xz slice...

7 years ago | 0

Answered
done , finish the task
You have to apply watershed algorithm to the original (grayscale) image, not the binary one. Can you post the code you are using...

7 years ago | 1

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Answered
How to find and draw boundary on some parts of an object in image?
Is this what you are looking for? im=imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/119409/Imag...

7 years ago | 0

Answered
Detecting centroid and orientation of capsules
If your capsules have parametric a representation (e.g., ellipsoid), you can use Hough transform (HG). Description of a HG varia...

7 years ago | 1

Question

Setting 'FaceAlpha'<1 for a patch object causes x- and y- axes of the plot to dissapear. Why and how can this be corrected?
Hello everyone, have any of you ever plotted a 2D patch object and noticed that upon altering its 'FaceAlpha' value below 1, ...

11 years ago | 1 answer | 0

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answer

Answered
Dividing a triangle into equal parts
Suppose you have a triangle defined by the vertices A, B and C. To subdivide this triangle into n triangles of equal area you ca...

13 years ago | 0

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Point inside triangle(s)?
Hi Sven, I have encountered this problem many times in the past. I am aware of at least two approaches to solve it. The first...

13 years ago | 1

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Problem trying to access labeled portion of images (updated 7/5)
The error occurs for m=559. If you look at the object: figure, imshow(K==559) set(gca,'xlim',[481 580],'ylim',[500 6...

13 years ago | 0

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Answered
fminbnd fails to converge with exitflag=1
because TolX is a measure of change in x between two successive iterations and not an indication of how close it is to a true mi...

13 years ago | 0

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Answered
Skull striping without affecting tumor region
The simplest way to segment the tumor in the sample image would be to use region growing algorithm. There are a few implementati...

13 years ago | 0

Answered
Solving an implicit function, fsolve vs. fzero
You can try the following approach: abc=rand(3,1); % A, B, C parameters q=8; % order of the polynomial ...

13 years ago | 1

Answered
does anybody have a matlab code for revised simplex method with box vriables like -2<=x<=10....etc
yep, there is a submission of this sort on FEX: http://www.mathworks.com/matlabcentral/fileexchange/8277-fminsearchbnd-fminse...

13 years ago | 0

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Answered
weird results with relational operation ==
The expression xchk == X3 is indeed false, however , if you check the value of abs(xchk-X3) you will find it to be le...

13 years ago | 1

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Answered
The "imregconfig" and " imregister" functions . help
You will not find these functions with your version of MATLAB because they were made available quite recently with the R2012a ve...

13 years ago | 0

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