Marcus Rosales
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Awarded to Marcus Rosales on 15 Apr 2020
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Question
BVP4c not giving expected behavior, is the set up right?
I am trying to solve the following nonlinear diff eq: ...
alrededor de 1 mes ago | 0 answers | 0
0
answersBvp4c: Unable to solve the collocation equations -- a singular Jacobian encountered.
I guess I'll answer this question since I found it out. It turned out to work better using the EOM for . The main issue here is...
alrededor de 1 mes ago | 0
| accepted
Question
Bvp4c: Unable to solve the collocation equations -- a singular Jacobian encountered.
I am trying to solve a boundary value problem, but I keep getting the above error. I know there are similar posts to this, but I...
alrededor de 1 mes ago | 1 answer | 0
1
answerQuestion
bvpinit giving wrong behavior!
I'm tryping to solve the following nonlinear Diff. Eq: ...
alrededor de 1 mes ago | 0 answers | 0
0
answersQuestion
Question regarding how matrices are stored in memory
I'm trying to get a simulation running which requires a big matrix ( N~400), so being smart with memory is important. The issue...
9 meses ago | 1 answer | 0
1
answerQuestion
Feature for eigs involving just positive eigenvalues
Hello, just a quick question involving eigs(). There's an option to find the N eigen values closest to an eigenvalue E, but is t...
11 meses ago | 1 answer | 0
1
answerQuestion
Interpolation for 2D matricies
Basically just wondering if matlab has a feature where you can interpolate a given matrix. For instance, say you have an NxN mat...
alrededor de 1 año ago | 1 answer | 0
1
answerQuestion
Accessing order pair from sparse matrix
Hello, my question has to do with accessing the indicies of a sparse matrix. Say we define $S=sparse(M)$, then if we put in the...
alrededor de 1 año ago | 2 answers | 0
2
answersQuestion
Finding average of matrix elements within a specified window
So I am trying to clean some plots up and I think I can do so if I had a function which took in some matrix A and returned a new...
alrededor de 1 año ago | 1 answer | 0
1
answerQuestion
Filling in gaps in plot
Hello, I am trying to generate some plots which look a little prettier than what I currently have. An example is attached. I am...
alrededor de 1 año ago | 1 answer | 0
1
answerQuestion
Need Help Understanding a peculiar result when comparing MATLAB's Eigenvectors to my own
Hello everyone, I am working on a simulation and have ran into an issue. To begin I am starting off with a 2D tight binding Hami...
alrededor de 1 año ago | 0 answers | 0
0
answersQuestion
Help Cleaning up some plots
Hello, I have some plots I got from a simulation, which give me the results I should be getting. My advisor asked me to clean th...
más de 1 año ago | 0 answers | 0
0
answersQuestion
Filtering a 2D plot from pcolor
Hello, just wondering what a good way to filter a plot obtained from a matrix of values, M, when using pcolor(m) with shading in...
más de 1 año ago | 1 answer | 0
1
answerQuestion
Using an external hard to run a bigger simulation
Sooo I have been trying to do a simulation to produce some plots for some time now and it is now apparent that I need to use a b...
alrededor de 2 años ago | 1 answer | 0
1
answerQuestion
Error when saving a work space
Hello, I am trying to save a workspace after I run a simulation but something seems to be going wrong... I have attached two scr...
alrededor de 2 años ago | 1 answer | 0
1
answerQuestion
Can you edit a pcolor plot after generating one?
Hopefully an easy question here. I am using pcolor's interpolation option to give me a map of a fourier transform (FT) of an NxN...
alrededor de 2 años ago | 1 answer | 0
1
answerQuestion
Ways of plotting a matrix
Hello, I am working on a simulation which diagonalizes a matrix for me, then I take the eigen vectors of said matrix and build a...
más de 2 años ago | 1 answer | 0
1
answerQuestion
Need better resolution in my plot!
Hello, I am working on a plot of a local density of states and want to know if anyone has any suggestions to improve the reso...
más de 2 años ago | 1 answer | 0
1
answerQuestion
Tight binding simulation issues
Hello, This may be too far on the physics side of things, but I figured I may try and ask anyways. My main issue comes from the...
más de 2 años ago | 0 answers | 1
0
answersUsing existing arrays in workspace
You might find memoize useful.
más de 2 años ago | 0
| accepted
Question
Using existing arrays in workspace
Hello, I am currently writing some code which finds the eigenstates of a Hamiltonian, but each time I run the code I need to so...
más de 2 años ago | 3 answers | 0
3
answersQuestion
Solution to nonlinear differential equation
Hello, I am trying to solve the following differential equation, but I am running into some issues when using ODE45: subjec...
más de 2 años ago | 1 answer | 0
