# bbah

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Question

Delete row with same value but in different columns

I have a matrix like: [1 1 2 1 47 ; 1 1 47 1 2] How to delete one of the rows and keep the other ? Thanks

3 years ago | 1 answer | 0

### 1

answerQuestion

Read two lines from a file and repeat for next lines

Hello everybody i have a file part like this: 1, 695, 400, 8, 519, 2721, 2426, 2034, 2545, 6082, 6081, ...

3 years ago | 1 answer | 0

### 1

answerQuestion

Solving nonlinear ordinary differential equations

I want to solve the following equation: h(x) = -(D+a*(D/RT)*o*C)dc/dx % D, a, R,T, o are parameters %Boundary conditions: ...

4 years ago | 0 answers | 0

### 0

answersQuestion

Calculating a series function

Dear Matlab Community, i have a problem regarding the following equation which i want to calculate: The Input are lambda, beta,...

4 years ago | 0 answers | 0

### 0

answersQuestion

Set specific values in an array to zero

I have an array containing displacements of nodes UY (Nx1) and a matrix containing the nodes of specific elements elems (Nx8). N...

4 years ago | 1 answer | 0

### 1

answerQuestion

calculate rotation matrix in 3D

i have 3 axis starting at a point of origin and a rotated vector dir1_new starting at the origin. How can i calculate the rotati...

4 years ago | 2 answers | 0

### 2

answersQuestion

Divide square faces into triangles

Hello, i have a faces matrix and i want to divide it into triangles e.g. faces is a 100x4 matrix and i want the same face...

4 years ago | 2 answers | 0

### 2

answersQuestion

Newton raphson tranfsorm from 1d to 2d

i have the solution for a 1d problem. How to solve it in 2d ? 1D: function [x] = my_NR(fun, dfun, x_0,E_tol) q = 1; E = i...

4 years ago | 0 answers | 0

### 0

answersQuestion

Newton raphson for 2d function

I need to implement a function which approximations the root of a 2dimensional function using the NewtonRaphson method. J is ...

4 years ago | 1 answer | 0

### 1

answerQuestion

loop over a cell and combine cell columns into one column

i have a cell array e.g [1,10,18,24,31,40,0] [] 2.0673943 2.0874443 2.1595383 2.2108727 2.2004662 2.1298561 [] [2,11,19,25,32,...

4 years ago | 1 answer | 0

### 1

answerQuestion

Remove specific entry in a cell array

in my cell arrays the last number is a 0 or a -1. i want to delete only that value from every cell array e.g input: element...

4 years ago | 1 answer | 0

### 1

answerQuestion

create cell array containing neighbour element

Hi, i have a matrix gnbh(ngex2). My first column gives me the index in -x direction and my second in +x direction. I start w...

4 years ago | 0 answers | 0

### 0

answersQuestion

loop over a matrix by taking the previous index

hi, i want to loop over a matrix and add the element to a row by taking the index of the previous element. e.g. first_el...

4 years ago | 0 answers | 0

### 0

answersQuestion

adding element to a matrix row

hi, i want to add to a matrix edhe next element to the next column e.g calculate an element add to position matrix(1,1) ca...

4 years ago | 1 answer | 0

### 1

answerQuestion

add rows to a 344x2 matrix

i have a zeros matrix 344x2 and i want to loop over it so i can put in every row a 1x2 row vector for i = 1:length(a) j = a(i)...

4 years ago | 1 answer | 0

### 1

answerQuestion

Deleting Elements in FEM by using a threshold

Hello everybody, i have some grooves and i need to delete elements in these grooves if the gap width is larger than 2.5 mm. ...

4 years ago | 0 answers | 0