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dominik
Istituto Universitario Europeo
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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...
5 Monate vor | 0 Antworten | 0
0
AntwortenFrage
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...
5 Monate vor | 1 Antwort | 0
1
AntwortFrage
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...
fast 8 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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!
etwa 8 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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...
mehr als 9 Jahre vor | 0 Antworten | 0
0
Antwortenbug 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 ...
mehr als 10 Jahre vor | 0
Frage
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...
mehr als 10 Jahre vor | 1 Antwort | 0
1
AntwortGeneral 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...
mehr als 10 Jahre vor | 0
Frage
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...
mehr als 10 Jahre vor | 3 Antworten | 1
3
AntwortenFrage
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)...
mehr als 10 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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 ...
mehr als 10 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 10 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 10 Jahre vor | 1 Antwort | 0
1
AntwortLarge 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...
fast 11 Jahre vor | 0
Frage
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...
fast 11 Jahre vor | 2 Antworten | 0
2
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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...
etwa 11 Jahre vor | 1 Antwort | 0
1
Antwortcubic 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...
etwa 11 Jahre vor | 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...
etwa 11 Jahre vor | 0
Frage
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...
etwa 11 Jahre vor | 3 Antworten | 0
3
AntwortengriddedInterpolant (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...
etwa 11 Jahre vor | 0