Andreas Apostolatos

Last seen: 1 dag ago | Active since 2020

Followers: 1 Following: 0

Andreas holds a Diploma in Applied Mathematics with specialization in Applied Mechanics and Statistics from the National Technical University of Athens. Currently, Andreas applies his expertise as a Senior Application Engineer in Education at MathWorks, where he supports academics using state-of-the-art MathWorks solutions for their teaching and research activities, while also engaging in the preparation of high-quality courseware for science and engineering disciplines. Moreover, Andreas is also an active lecturer at the Technical University of Munich where he applies modern teaching methods, such as Inverted Classroom and Project-Based Learning (PBL).

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Answered
How do you take the partial derivative of a function relative to theta dot
Hi Cason, You can achieve this workflow by substituting the symbolic expression diff(theta1) with a symbolic variable theta1d...

bijna 2 jaar ago | 1

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Answered
Gaussian quadrature with change of variables
Hi Melanie, There are serveral submissions on File Exchange that you can use to compute integrals using the Gauss Quadrature ...

bijna 2 jaar ago | 0

Answered
calculate the classification accuracy after training a "pretrained model"
Hi Rayan, From the code snippet you share it appears that you are training a neural network for classification while you are ...

meer dan 2 jaar ago | 1

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Answered
how can i validate my optimization algorithm?
Hi Harsh, From your description I understand that your cost function f depends on (x,y), namely f = f(x,y) and that f(10, 20)...

meer dan 2 jaar ago | 0

Answered
Can matlab work with rosetta?
Hi, MATLAB interfaces smoothly to Python, see the following documentation page, https://www.mathworks.com/products/matlab/...

meer dan 2 jaar ago | 0

Answered
Configure Matlab for GIT on Windows
Hi Rocco, The step of installing Cygwin and adding it to the MATLAB library path is just an optional step in case you want to...

meer dan 2 jaar ago | 2

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Answered
Eig Argument Command Error
Hi, The issue here is that you are defining matrices K and M as symbolic matrices, whos K M Name Size B...

meer dan 2 jaar ago | 0

Answered
Not Enough Input Argument Error
Hi, It is yet not clear what kind of error you are receiving, since you have not shared it with us. However I understand that...

meer dan 2 jaar ago | 0

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Answered
Why program shows Unrecognized function or variable 'g'.
Hi, In the following call of your code snippet, plot(x,y,'bd-',x,h,'g:',x,w,'ro-',x,g,'c^-'); you are trying to plot va...

meer dan 2 jaar ago | 1

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Answered
I would like to run Matlab on Centos 8. is there any way?
Hi, Please refer also to the following MATLAB Answers post accordingly, https://de.mathworks.com/matlabcentral/answers/452...

meer dan 2 jaar ago | 0

Answered
Regression Learner and 1 layer Neural Network Model parameters
Hi, The source of the discrepancy in this case comes from the fact, that you are performing the "manual" forward pass without...

bijna 3 jaar ago | 1

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Answered
Interactive brushing across multiple scatter-plots on the same dataset (data relation given not by a common x-axis but just by the dataset)
Hello, You can use the following code snippet for your needs, %% Just some viusally instructive, artificial sample data n...

bijna 3 jaar ago | 1

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Answered
weird latex-interpreter problem in annotation when adding one line to table
Hello everyone, This post is already a little bit old, but I would like to provide with some information in case somebody els...

ongeveer 3 jaar ago | 0

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Answered
Matlab Coder Code check fails with "Error calling ... This call-site expects more outputs than this function can supply"
As mentioned above, the issue gets resolved if you remove the declaration of the optimization options variable as 'persistent'. ...

ongeveer 3 jaar ago | 0

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Answered
NATIVE-DECLARATION generated by embedded coder wrong
Hi, I would like to follow-up on this question, in case someone else stumbles upon the same issue. For the <NATIVE-DECLARA...

ongeveer 3 jaar ago | 0

Answered
Error solving piecewise system of equations
Hi Jeremy, Adding to the excellent recommendation of Walter, there is also the possibility to use function 'fsolve()' to solv...

ongeveer 3 jaar ago | 0

Answered
How can I use a probability distribution object in a Stateflow chart?
Hi, Firstly please note that Simulink is under the hood generating and compiling code when you build and run a model. The Cod...

ongeveer 3 jaar ago | 0

Answered
How to install matlab in Manjaro Linux?
Hello, Each MATLAB release is only supported for a subset of Linux distributions. For instance, the list of the Linux distrib...

meer dan 3 jaar ago | 0

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Answered
Solve 2D Navier stokes Equation Deep Learning
Dear Chris, Function 'fullyconnect' returns only a single output argument, see the following documentation page for more info...

meer dan 3 jaar ago | 1

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Answered
minimize tool bar lost
Hi Jose, Select the option "Layout" on the right of the toolstrip in the "HOME" tab, and then choose from the "SELECT LAYOUT...

meer dan 3 jaar ago | 1

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Answered
How to multiply two symbolic matrices fully?
Hi Igor, I understand that you are seeking to have the components of the resulting matrix from the multiplication expanded. Y...

meer dan 3 jaar ago | 0

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Answered
Objective function is returning undefined values at initial point. lsqcurvefit cannot continue.
Hi Eren, Welcome to the forum from me as well. The code snippet you shared cannot be executed because variable 'x' is nowh...

meer dan 3 jaar ago | 0

Answered
Polyspace justifications added inside the code not available in generated polyspace reports
Hello everyone, The cause of the issue was that the code annotation was added one line above the line of code that resulted i...

meer dan 3 jaar ago | 0

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Answered
problem using 'Solve' (return only 1 solution)
Hi Marco, It is not clear how you define expression 'equazione_gamma', but by reverse engineering your call to function 'root...

meer dan 3 jaar ago | 1

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Answered
Pareto set for 2D functions
Hi Laura, You are on the right path, but I would have some recommendations for you accordingly: 1.) When using function 'f...

meer dan 3 jaar ago | 1

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Answered
hs923a function for Monte Carlo Approx
Hello, Function 'halton' does not appear to be a built-in MATLAB function. However, there is below a link to a custom MATLAB ...

meer dan 3 jaar ago | 0

Answered
plotting logarithmic and linear scale
Hello, You can use function 'semilogy' for your needs, please visit the following documentation page accordingly, https://...

meer dan 3 jaar ago | 1

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Answered
Obtaining accurate derivatives using Symbolic Math Toolbox
Hello, The evaluations of symbolic expressions that represent analytic derivatives in MATLAB are only governed by round-off e...

meer dan 3 jaar ago | 0

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Answered
Minimising coefficients using fminsearch, subject to normalisation condition
Hello, You have an optimization problem at hand, where the objective function is subject to two sets of equality constraints....

meer dan 3 jaar ago | 1

Answered
How to substitute x by an integer in a derivative function
Hello, To evaluate symbolic expression 'a' at 'x = 1' you can use function 'subs', namely, a_at_1 = subs(a, 1); I am no...

meer dan 3 jaar ago | 2

| accepted