Marko

TU Wien

Last seen: circa 2 mesi fa | Attivo dal 2016

Followers: 0 Following: 0

Messaggio

interested in maths, algorithms and fluid dynamics

Statistica

All

Visualizza badge

Feeds

Domanda

model reduction from a database created with xfoil
Hello community, i have created a database with xfoil (2d airfoil panel code with an boundary solver). The database is saved i...

circa 2 mesi fa | 1 risposta | 0

1

risposta

Domanda

add / interpolate arrays of different length
Hello community, i have two array's tsol and ysol. Each array has the length of 9; I have also an error estimate array errorEs...

6 mesi fa | 1 risposta | 0

1

risposta

Domanda

exact 2D Chebyshev Interpolation
Hello community, with pseudospectral methods it is possible to obtain a high resoltution solution with a small mesh. I added a...

circa un anno fa | 1 risposta | 0

1

risposta

Domanda

how to solve a simplified 2D trajectory problem with defined points and derivatives
Hello, how could i solve this. Two Points are given, also the velocity and the direction What is the simplest trajectory whic...

circa un anno fa | 1 risposta | 0

1

risposta

Domanda

how can a symbolic derivative be vectorized automatically?
Hello, here is the simplified problem. I have a symblic function with three arguments. And the derivative of f wrt. b syms a...

circa un anno fa | 3 risposte | 0

3

risposte

Domanda

find the minimum objective for a given ode as boundary value problem
Hello Community, could you give me hint how to tackle this problem. I have an ode (c has a positive value): dxdt2 = a+b*t - c...

quasi 3 anni fa | 2 risposte | 0

2

risposte

Domanda

eigs with Extended Capabilities
Hello Community, in the documentation of eigs: Extended Capabilities Thread-Based Environment Run code in the background usi...

quasi 3 anni fa | 1 risposta | 0

1

risposta

Domanda

solve efficiently sparse large linear system of equations
Hello Community, i have a large sparse block structured matrix. with this quadratic sparse Matrix L: is there any faster wa...

circa 3 anni fa | 2 risposte | 0

2

risposte

Risposto
set efficently specific rows in a sparse matrix to 0
here are the benchmark results: ver Var2 ___ _____ 1 2.242 2 NaN 3 0.87 for v...

circa 3 anni fa | 0

Domanda

set efficently specific rows in a sparse matrix to 0
Hello comunity, I have a sparse matrix J and i want to set specific rows to 0. My code's like this: J = sparse(blkdiag(rand(1...

circa 3 anni fa | 2 risposte | 0

2

risposte

Domanda

function interpolation and root finding
Hello community, i have 37 points in in the interval [-.5 .5]. and i'm looking for a minimum. I have written a script which use...

oltre 3 anni fa | 1 risposta | 0

1

risposta

Domanda

testing SVD Performance on M1
Hello Community, here is a script for testing the M1 performance on solving a SVD Problem. (Parallel Computing Toolbox is requi...

oltre 3 anni fa | 0 risposte | 0

0

risposte

Domanda

vectorize a for loop
Hello Community, i need ur help, to speed up a routine. i have n points in space and i need the distances between all points. ...

oltre 3 anni fa | 1 risposta | 0

1

risposta

Domanda

Solve large linear equations with backslash operator. Why is sparse matrix solved slower than the full matrix?
Hello Community and Staff, maybe somebody could explain to me why sparse matrix operation for a not so well condidioned matrix ...

oltre 3 anni fa | 1 risposta | 0

1

risposta

Domanda

2d Chebyshev polynomial interpolation
Hello Community, may i ask you for your help. I have a full matrix M with the N+1 number of elments in each direction. The x...