dominik
Istituto Universitario Europeo
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Question
How to apply functions to symmatrix objects, in the same way as to sym objects.
Hi I work with symbolic matrix objects, defined as symmatrix. Unfortunatly, symmatrix is not compatible with as many functions...
presque 2 ans il y a | 1 réponse | 0
0
réponseQuestion
Operations and differentiation with symmatrix in MATLAB... possible bug?
Hi I have found matlab to behave unexpectedly when using the symmatrix. I dont understand it, maybe i misunderstood the way ope...
presque 2 ans il y a | 1 réponse | 0
1
réponseQuestion
MATLAB seems to use multiple cores and threads but not processors
Hi I have a computer with 2 processor, 10 cores each, 2 threads per core. When I run say a big matrix multiplication the win...
environ 9 ans il y a | 1 réponse | 0
0
réponseQuestion
difference corr and autocorr
Hi why does ac1=corr(x(1:end-1),x(2:end)) not yield the same as ac2=autocorr(x); ac2(2) ? Many thanks!
plus de 9 ans il y a | 1 réponse | 0
0
réponseQuestion
derivative of cubic spline for use in nonlinear optimization
Hi i wanna solve a functional system of nonlinear equations by collocation. To speed up the solution process i want to provi...
presque 11 ans il y a | 1 réponse | 0
0
réponsebug in matlabFunction when passing unspecified symbolic function?
I still think it's a bug but as a workaround, one can define auxiliary variables syms Dfx Dfy Dfz and substitute them ...
plus de 11 ans il y a | 0
Question
bug in matlabFunction when passing unspecified symbolic function?
Hi the function _matlabFunction_ seems to do a mistake with undefined functions. It seems to work all right if there is on...
plus de 11 ans il y a | 1 réponse | 0
1
réponseGeneral function in symbolic toolbox
Hi Thanks for the answer, it seems I havent expressed my question clearly. In what you propose you define the function explic...
plus de 11 ans il y a | 0
Question
General function in symbolic toolbox
Is it possible in the matlab symbolic toolbox to define general functions, i.e. to define functions only as a general mapping fr...
plus de 11 ans il y a | 3 réponses | 1
3
réponsesQuestion
constrained maximization, share variables of tagret function and constraint
I want maximize a function f(x) s.t. nonlinear cosntraints c(x). Both the function f(x) and c(x) contain a computation step g(x)...
presque 12 ans il y a | 1 réponse | 0
1
réponseQuestion
getting slope information from griddedInterpolant
Hey when evaluating a griddedInterpolant, the computer should at some pont determine the slope of the interpolant at the query ...
presque 12 ans il y a | 1 réponse | 0
1
réponseQuestion
nested loops in parfor, indexing
Hey im trying to solove an equation system over a 4 dimensional grid of parameter values. Since the difference between neigbo...
environ 12 ans il y a | 1 réponse | 0
1
réponseQuestion
costly anonymous function declaration for solving a equation system with parameters
Hi i have to solve a equation system (which is a matlab functiion)for many parameters values, so i run a loop over the paramete...
environ 12 ans il y a | 1 réponse | 0
1
réponseLarge broadcast variable in parfor loop
I got it running.... but it seems this submission does only work for cells and matrixes. When I try to share a griddedInterpolan...
environ 12 ans il y a | 0
Question
Large broadcast variable in parfor loop
Hi Im having a for loop that i want to parallelize. In the loop th essential part is an interpolation. The problem is that t...
environ 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
Can querying "TriScatteredInterp" be as fast as "griddedInterpolant"?
Hi, im wondering why querying the TriScatteredInterpolant is so much slower and so much more size dependent than griddedInterpol...
plus de 12 ans il y a | 1 réponse | 0
1
réponsecubic spline interpolation of a function that yields NaNs when evaluated at some of the grid points.
Update: I have above described the behavior of griddedinterpolant wrongly. I found that cubic interpolation is possible with...
plus de 12 ans il y a | 0
cubic spline interpolation of a function that yields NaNs when evaluated at some of the grid points.
Thanks for ur tips! I thought about doing that (putting an arbitrary number in place of the NaNs), but was recluctant to do s...
plus de 12 ans il y a | 0
Question
cubic spline interpolation of a function that yields NaNs when evaluated at some of the grid points.
Hi i want to cubic spline interpolate an unknown function defined over a 3 dimensional domain, whose values i know at the gridp...
plus de 12 ans il y a | 3 réponses | 0
3
réponsesgriddedInterpolant (via e.g. interp1) bug with NaNs?
Hey, I have the same problem: I define a griddedinterpolant IP over a grid G and the values V. whenever I evaluate IP at a gri...
plus de 12 ans il y a | 0
