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Mahsa


Actif depuis 2013

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Defining boundary condition and initial condition for PDE.
I want to solve following 1D Burger's equation using pdepe. With the initial and boundary condition of 4. Unfortunately, I cou...

plus de 7 ans il y a | 1 réponse | 0

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Question


find the last non-zero value
For a regular vector we can use following command to extract the vector after pre-allocating. if m = [ 1 2 3 4 5 0 0 0 0...

plus de 9 ans il y a | 1 réponse | 1

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Réponse apportée
find the last non-zero column in matrix in pre-allocated matrix
Oh I see it can be answered by find(any(M,1),1,'last')

plus de 9 ans il y a | 0

Réponse apportée
find the last non-zero column in matrix in pre-allocated matrix
another way is to delete the zeros if m = [ 1 2 3 4 5 0 0 0 0 0 0 0 0] m(m==0)=[] m= [1 2 3 4 5]; However my question i...

plus de 9 ans il y a | 0

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calculate the inv of a matric with one constant
Hello all, I have a simple question. Assume that I have the following matrix. How can I find the inv of this matrix based on "t...

presque 10 ans il y a | 1 réponse | 0

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Question


Preallocating zeros in cell array. and Which one is faster? 3D matrix, cell or structure data?
Hello all, I have to rewrite my Matlab code to make it faster. in some cases I need to used cell structure to keep my data: for...

presque 10 ans il y a | 2 réponses | 0

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find the last non-zero column in matrix in pre-allocated matrix
Hello, My matlab code is creating very very matrix and I didn't pre-allocate it before. Because I always need to know the size ...

presque 10 ans il y a | 4 réponses | 0

4

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Question


Delet zeros after final number
Dear all, I'm looking for an efficient way to delete zeros after final number in MATLAB, A= [ 5 6 0 3 2 0 9 0 0 0 0 0 0] ...

presque 10 ans il y a | 2 réponses | 0

2

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Réponse apportée
delete zero rows only with one number
if a = [9 0 0; 7 0 0; 8 2 0; 8 8 8] K>> t=a(all(a(:,2:end),2),:) t = 8 8 8 however it should be K>> t=a(a...

presque 10 ans il y a | 0

Question


delete zero rows only with one number
Dear all, I have a matrix like A =[23 45 23 56;26 0 0 0;45 23 65 34;34 0 0 0] I want a very efficient way to delete only the r...

presque 10 ans il y a | 4 réponses | 0

4

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Question


mesh generation for all known domain coordination
Hello, I'd like to generate a 3D mesh, for example, in my picture, if I calculate all points in a, h, f and c, how can I plot...

plus de 10 ans il y a | 1 réponse | 0

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Question


Arc length of Cubic Bezier Curve
Hello, I'm looking for an efficient way to calculate the arc length of Cubic Bezier curve, by knowing P0,P1,P2 and P3. Thank ...

plus de 10 ans il y a | 2 réponses | 0

2

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Question


Find the intersection of two vectors
I have two pairs of point and vector in 2d and I should find its intersection. for example: p0=[0,0] vector_p0=[0,1] and p1...

presque 11 ans il y a | 1 réponse | 0

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Question


Plotting Beziar curve by having tangent
My problem: I have coordinate and tangent of first point and the end point of Bezier curve and I should draw Bezier Curve in MAT...

presque 11 ans il y a | 1 réponse | 0

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Question


Plotting Bezier curve by having tangent
My problem: I have coordinate and tangent of first point and the end point of Bezier curve and I should draw Bezier Curve in MAT...

presque 11 ans il y a | 1 réponse | 0

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réponse