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dominik


Istituto Universitario Europeo

Last seen: 4 meses hace |  Con actividad desde 2013

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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...

8 meses hace | 0 respuestas | 0

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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...

8 meses hace | 1 respuesta | 0

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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...

alrededor de 8 años hace | 0 respuestas | 0

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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!

más de 8 años hace | 0 respuestas | 0

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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...

más de 9 años hace | 0 respuestas | 0

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bug 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 ...

más de 10 años hace | 0

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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...

más de 10 años hace | 1 respuesta | 0

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General 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...

más de 10 años hace | 0

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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...

más de 10 años hace | 3 respuestas | 1

3

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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)...

casi 11 años hace | 1 respuesta | 0

1

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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 ...

casi 11 años hace | 1 respuesta | 0

1

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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...

casi 11 años hace | 1 respuesta | 0

1

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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...

casi 11 años hace | 1 respuesta | 0

1

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Large 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...

casi 11 años hace | 0

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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...

alrededor de 11 años hace | 2 respuestas | 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...

más de 11 años hace | 1 respuesta | 0

1

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cubic 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...

más de 11 años hace | 0

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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...

más de 11 años hace | 0

Pregunta


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...

más de 11 años hace | 3 respuestas | 0

3

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Respondida
griddedInterpolant (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...

más de 11 años hace | 0