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Ahmed Hossam


2017 年からアクティブ

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質問


Draw lines between two given sets of points
I have two sets of points in 3D. These look for example like: S1 = {(x1,y1,z1),(x2,y2,z2),...,(xn,yn,zn)} S2 = {(x1',y1',z...

7年以上 前 | 1 件の回答 | 0

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質問


Edge transparency "EdgeAlpha" of a patch
Is it somehow possible to specify the edge transparency for the edges of a patch separately for each edge at a time?!?! ... I ha...

7年以上 前 | 1 件の回答 | 0

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質問


The function LegendreP is not working ...
Hi, I think I have the wrong matlab version (maybe I need an update), but is there any way I can tell matlab that there is a ...

7年以上 前 | 0 件の回答 | 0

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質問


AlphaShape doesn't work for this?
I tried all possible alphas, for which the alphaShape changes, but I couldn't capture the interior of this polygon. Maybe it's b...

7年以上 前 | 0 件の回答 | 0

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質問


Extrude a surface along curved lines to generate Volume
Is there a Matlab function for this?...

7年以上 前 | 1 件の回答 | 0

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質問


Get the Edges of the Volume in the current figure
I have constructed step by step some 3D Volume with the alphaShape-function and I wonder, if it's possible to get the boundaries...

7年以上 前 | 0 件の回答 | 0

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質問


Boundaries of a point cloud
I have 2D points in the x,y-plane and I would like to extract the boundaries with this function: <https://ch.mathworks.com/he...

7年以上 前 | 1 件の回答 | 0

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質問


3D volume data
I have a cross section in the y,z-plane meshed with quadrilaterals. I would like to extrude this mesh along the x-axis. What wou...

7年以上 前 | 0 件の回答 | 0

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質問


How can I obtain the left eigenvectors for a polynomial eigenvalue problem?
I have used polyeig-function to obtain the right eigenvectors to a quadratic eigenvalue problem, but I wonder, how I could get t...

7年以上 前 | 0 件の回答 | 0

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質問


Constant properties in classes
Hi, is it possible to define a constant property in a class which depends on other constant properties in the same class? ...

8年弱 前 | 1 件の回答 | 0

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質問


OOP: Object gone out of scope!
Hi, I have two handle classes. In one of them I call the constructor of the other handle class many times. Problem: Up...

8年弱 前 | 1 件の回答 | 0

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How to determine where the function is equal to zero
Try to use symbolic calculation to find 'the zeros'. Otherwise use numerical newton raphson algorithm.

8年弱 前 | 0

質問


Listen to a property of an user-defined handle class
Hi, In an user-defined handle class, I have attached a listener to a property, which I've defined in a property block using...

8年弱 前 | 0 件の回答 | 0

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質問


Construct an empty array of objects of a handle class
Hi, I'm trying to construct an empty array of objects made from an user-defined handle class (class_1). I'm trying to acheive...

8年弱 前 | 1 件の回答 | 1

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質問


Merge array cells after creation to one cell
Hi, i have an array arr = cell(2,3) and I wonder, if there's a method/function/trick which could combine the three cells in t...

8年弱 前 | 1 件の回答 | 0

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質問


Invoke methods and access properties of a subclass by a super class
Hi, what is the safest way to do that in Matlab, if this is possible?! I have an abstract relationship between 'smaller...

8年弱 前 | 1 件の回答 | 0

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質問


I have a cell array with different types of data and I would like to cellplot
When I plot my cell array, even if there are just double values, I get to see only the structure of that array, but not all the ...

8年弱 前 | 1 件の回答 | 0

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質問


General question to cell arrays and structures
I have defined some sort of a 'structure' made up of numbers and matrices of different sizes. I used cell arrays to build it up....

8年弱 前 | 0 件の回答 | 0

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質問


Differentiating a bilinear function with the symbolic Toolbox
Assume we have functions, which look like this: a(x,y) = 1 + 2x + 3y + 4xy b(x,y) = 5 - 6x + 7y - 8xy can I somehow g...

8年弱 前 | 0 件の回答 | 0

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質問


Extract matrices out of a symbolic matrix
Let's assume I have a matrix which looks something like: Mtx = [2,3*x;4*x^2,1] Is it "symbolically" poss...

8年弱 前 | 1 件の回答 | 0

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質問


Basic question about initializing variables
What's the difference between a = [ 1 2 3 ]; and a = zeros(1,3); a = [ 1 2 3 ]; Performance? Logic? I'm jus...

8年弱 前 | 1 件の回答 | 0

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質問


mat2cell second input parameter(s)
Hier: https://ch.mathworks.com/help/matlab/ref/mat2cell.html I have a problem to fully understand the second, third, fourt...

8年弱 前 | 1 件の回答 | 0

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質問


Build determinantes of matrices in cell arrays
I have a cell array X with dimension (N x 2) and N is an even number. This cell array is filled with (2 x 2) Matrices of type do...

8年弱 前 | 1 件の回答 | 0

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質問


Extract every subexpression in a symbolic expression between + and -
Is it somehow possible to get out of some expression E, for example: E = 5*h*(a*(b/c)+(d*e*f)/(3*g)-(x*y)/(j*i*k)+...)/(...) ...

8年弱 前 | 1 件の回答 | 0

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質問


An isoparametric 2D quadrilateral with 3 DOFS per Node?
Hi, Is it possible to define an isoparametric linear 2D finite element with three DOFS (ui,vi,wi) per node i? I only see ...

8年弱 前 | 0 件の回答 | 0

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質問


Converting a symbolic array to a double array cuts off decimal places, why?
I have a symbolic array arrsym with values like for example 1.234567891234567... When I double(arrsym), then I get only four ...

8年弱 前 | 0 件の回答 | 0

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質問


Call a function in an m-file from a method of a handle class
I would like to know, if the object, which is being created with the help of the (handle) class methods, would also be visible f...

8年弱 前 | 2 件の回答 | 0

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質問


How can I declare lots of global variables in one m-file and make them visible for all my functions in all other m-files?
I was thinking about putting all my global variables in one m-file in order for me to have an overview on my global variables. ...

8年弱 前 | 2 件の回答 | 0

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質問


How can I generate a mesh of quadrilaterals for a given 2D surface using MATLAB?
Does somebody know, how to simply and theoretically generate a mesh of quadrilaterals on a given surface? The surface is in ...

8年弱 前 | 1 件の回答 | 0

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