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dominik


Istituto Universitario Europeo

Last seen: 4 months 前 |  自 2013 起处于活动状态

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统计学

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提问


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 months 前 | 0 个回答 | 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 months 前 | 1 个回答 | 0

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提问


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...

8 years 前 | 0 个回答 | 0

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提问


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!

8 years 前 | 0 个回答 | 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...

9 years 前 | 0 个回答 | 0

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已回答
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 ...

10 years 前 | 0

提问


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...

10 years 前 | 1 个回答 | 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...

10 years 前 | 0

提问


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...

10 years 前 | 3 个回答 | 1

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提问


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)...

11 years 前 | 1 个回答 | 0

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提问


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 ...

11 years 前 | 1 个回答 | 0

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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...

11 years 前 | 1 个回答 | 0

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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...

11 years 前 | 1 个回答 | 0

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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...

11 years 前 | 0

提问


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...

11 years 前 | 2 个回答 | 0

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提问


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...

11 years 前 | 1 个回答 | 0

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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...

11 years 前 | 0

已回答
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...

11 years 前 | 0

提问


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...

11 years 前 | 3 个回答 | 0

3

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已回答
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...

11 years 前 | 0