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Titus Edelhofer


MathWorks

1,017 total contributions since 2011

MATLAB user since 1992 and working for MathWorks since 2001.
Consulting Manager in Germany.

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Convert a structure into a string
Convert the contents of each fields into a string. Example with an input structure s with 2 fields : s.age = '33' s....

2 months ago

Solved


Piecewise linear interpolation
Given an Mx2 vector and a row of M-1 integers, output a two column vector that linearly interpolates Y times between each succes...

2 months ago

Answered
How can I round double-values down in a Matlab function block in Simulink?
Hi, strange: floor should indeed be your friend. The only thing I can imagine is that leftover_seconds is not a double but an...

3 months ago | 0

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How can i modify a model automatically which uses an excel file as an input when this excel file is modified (checksum is modified) ?
Hi Lamjed, does the entire Simulink model needs to be changed or only a block? If it's only a block you could mask the block an...

3 months ago | 0

Answered
unresolved external symbol error, while building in Visual Studio code made by coder.
Hi Sara, just to be sure: did you specify the dll as external reference, as described in the doc in "Specify External Depende...

3 months ago | 0

Answered
How to check a function input to be ptcloud object?
Hi Philipp, probably you are looking for the function "isa": function myfun(x) if ~isa(x, 'ptCloud') error('Input argume...

3 months ago | 1

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How to execute multiple optimized values for x according to n, using fmincon
Hi, there are a couple of things I don't understand: you say "x is a vector"? But you always start with x0=initial_guess, whi...

3 months ago | 0

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Answered
'fwrite' does not write 'char' variables in binary files
Hi, I'm not really sure if this is not working as it should. If you do the following: fid = fopen('foo.bin', 'wb'); fwrite(fi...

5 months ago | 1

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Answered
How to plot xml file in matlab?
Hi, I guess you need to be a little more specific. The answer to your question is Read the xml file (e.g. using xmlread) Plot...

5 months ago | 0

Answered
How to Execute Maltab Function Block Every X Seconds in Simulink?
Hi Andrew, you can achieve this by assigning a sample time: right click on the block, choose "Block Parameters (Subsystem)", ...

9 months ago | 0

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Answered
plot-editing functionality does not exist in deployed apps
Hi, you can get some of the tools (zoom, pan) through using web figures, see e.g. here. Regards, Titus

9 months ago | 1

Answered
S Function Builder - To implement existing C code
Hi Ravikiran, usually (as long as your working C code has no states) you simply put it into the "outputs" function of the S-f...

10 months ago | 0

Answered
How to use 'mbuild' command to generate C/C++ dll ?
This has changed with R2014a, see <https://de.mathworks.com/matlabcentral/answers/128890-how-can-i-use-mbuild-to-compile-a-share...

10 months ago | 0

Answered
I want to know whether the Microsoft Access databases are not recognized by MATLAB R 2015b?
Hi, one problem might be the version you have: could it be that your R2009a was 32 Bit whereas your R2015b is 64Bit? In this ...

11 months ago | 1

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Answered
How to fix index in a parfoor loop?
Hi Andreu, agreed, it looks as if this case could be handled. But it is fairly easy to work around this by separating the inn...

11 months ago | 1

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Answered
How to rename several several .mat in a file with rename
Hi Solene, this should work names = {'Health', 'Practice', 'Taste', 'Test'}; for iName = 1:numel(names) for iFil...

11 months ago | 1

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Answered
what is the difference between data store memory and goto-from blocks ?
Hi Noufal, the main difference is, that data store memory and read/write remove the dependency between reading and writing, i...

11 months ago | 1

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Error in Integrator is not finite
Hi Mostafa, interesting that the error happens at time 4.0. This could indicate, that indeed something happens in your model ...

11 months ago | 0

Answered
why the output of randn is different between serial and parallel loop if using function of RNG
Hi, interesting. There was one thing missing, namely, that the workers might use a different algorithm (designed to be for th...

12 months ago | 0

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Answered
How can I create a best fit polynomial for my data?
Hi Syed, if I assume you have three (column) vectors x, y and Efficiency, then it's simply a linear regression problem: ...

12 months ago | 1

Answered
Use Parfor to split a 4D matrix into several 3D matrices
Hi, I agree with OCDER: parfor will only do huge memory movements from the Client to the workers but I doubt you will get muc...

12 months ago | 0

Answered
why the output of randn is different between serial and parallel loop if using function of RNG
Hi, the idea why the parallel rng gives different answers is, that a common use case is for Monte Carlo simulations with e.g....

12 months ago | 0

Answered
Making an executable with input arguments using codegen
Hi, it's probably not a question of the code generation but your main file: you compile to an executable, so probably your co...

12 months ago | 0

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Answered
How to delete rows from a cell array that do not satisfy a certain condition?
Hi, things get much easier, if you use arrays instead of individual variable names: % combine names and scores into a ta...

12 months ago | 2

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Answered
Graph plotting of dy by dx
Hi Kabit, if you have only the data (I assume a time vector and the corresponding values), the simplest is to use the functio...

12 months ago | 0

Answered
S-Function String Parameter C++
Hi Nils, I didn't take a look into the zip file but could it be that you did the same mistake as I, namely, really passing a ...

12 months ago | 0

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Answered
Changing file directories under C:\Program Files
Hi, when you open the desktop shortcut properties you should be able to set the "working folder" to the folder you like. Then...

12 months ago | 0

Answered
difference in ode45 and rk4 code
Hi Debashis, I think there is a misunderstanding: ode45 uses the result from the 5th order RK method for the solution, wherea...

12 months ago | 1

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Answered
Is it possible to create a UI around MATLAB functions in C++?
Hi Ivan, there are several possibilities: you can use <https://uk.mathworks.com/products/matlab-compiler-sdk.html MATLAB Comp...

12 months ago | 0

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Answered
Matrix dimensions and unbalanced bracket problem
Hi Jeff, I would rather use indexing instead of multiplication, something like u = zeros(size(t)); % first 2 micros...

12 months ago | 0

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