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William White


Imperial College

Active since 2015

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Answered
How can I translate (move) a stress field a given distance?
x = X - dx y = Y - dy substitue the x and y in the formular to this. the dx and dy moves the stress field by that measure

mer än 5 år ago | 1

Question


maximum value array of multiple arrays
Suppose I have many arrays or vectors of data A, B, C ....etc I can create an array which has the maximum and minimum valu...

mer än 6 år ago | 1 answer | 0

1

answer

Question


Error bars for large noisy data sets
Dear all, I have ten large linear arrays (50,000+ elements) such as A = [ An1 An2....An50000 ] B = [ Bn1 Bn2....Bn50000 ] ...

mer än 6 år ago | 0 answers | 0

0

answers

Question


Spherical surface plot from custom function
I have a function where the input is a set of Euler angles (z, x', z') and a four tensor, C, and outputs scalers, lets call them...

mer än 6 år ago | 0 answers | 0

0

answers

Answered
Simultaneous equations with four knowns four unknowns
Solved

mer än 6 år ago | 0

| accepted

Question


Simultaneous equations with four knowns four unknowns
I have a set of four simultaneous equations <</matlabcentral/answers/uploaded_files/106105/simeq.jpg>> I know the variab...

mer än 6 år ago | 1 answer | 0

1

answer

Answered
Area calculation within contour
I think I have a rather clumsy numeric answer. I count the number of entries in Z that are equal or larger than s. Then mu...

nästan 7 år ago | 0

| accepted

Question


Area calculation within contour
Sirs, I have the following plot [C,h] = contour(X,Y,Z,[s,s]) Where s is a variable that I change. This plot the image: ...

nästan 7 år ago | 1 answer | 0

1

answer

Question


Plot only certain contours
Sirs, I am plotting a contour plot of data contourf(X,Y,Z) Say the values of Z range from 0 to 100 (or say, -100 to 100...

nästan 7 år ago | 1 answer | 1

1

answer

Question


Irregular meshgrid - how to create?
I wish to create an irregular meshgrid to simulate the positions of an atomic lattice plane. The plane is body-centred-cubic....

ungefär 7 år ago | 0 answers | 0

0

answers

Question


Path Integral from n*n array
I have an n * n array, which represents a scalar field. I wish to determine the path(line?) integral of a closed path around the...

mer än 7 år ago | 0 answers | 0

0

answers

Question


Loop over two variables
I have a formula U(x,y) = some formula that depends on x and y x and y are Cartesian coordinates and U is the output that ...

mer än 7 år ago | 1 answer | 0

1

answer

Question


Compile C++ for Unix environment
Sirs, I have some C++ code that is currently compiled to operate within Matlab in a Windows environment (Mex'ed). I wish to ...

nästan 8 år ago | 1 answer | 0

1

answer

Answered
Tensor/Matrix multiplication problem
Solved, please ignore

mer än 9 år ago | 0

| accepted

Question


Tensor/Matrix multiplication problem
The shear stress at a point can be written (m•sigma)•n where m is the unit vector parallel to the slip plane; n is the uni...

mer än 9 år ago | 1 answer | 0

1

answer

Question


Extract data from countour and add two (or more) contours together.
My problem is thus: I have a mesh onto which I 'plot' a function. That is, for every point x,y, I have a value Q What I...

mer än 9 år ago | 1 answer | 0

1

answer

Question


How can I translate (move) a stress field a given distance?
I am modelling the stress field of a dislocation (an extra half line of atoms in a crystal) in a 2D plane The dislocation can...

mer än 9 år ago | 2 answers | 0

2

answers