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Question
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 8 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
presque 11 ans il y a | 1 réponse | 1
1
réponsefind 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')
presque 11 ans il y a | 0
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...
presque 11 ans il y a | 0
Question
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...
environ 11 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 11 ans il y a | 2 réponses | 0
2
réponsesQuestion
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 ...
environ 11 ans il y a | 4 réponses | 0
4
réponsesQuestion
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] ...
plus de 11 ans il y a | 2 réponses | 0
2
réponsesdelete 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...
plus de 11 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...
plus de 11 ans il y a | 4 réponses | 0
4
réponsesQuestion
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...
presque 12 ans il y a | 1 réponse | 0
0
réponseQuestion
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 ...
presque 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
environ 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 12 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
plus de 12 ans il y a | 1 réponse | 0
