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Jakob Sievers


Active since 2011

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Professional Interests: glaciology, atmospheric chemistry, geophysics

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Answered
Can I create a questdlg box with multiple yes/no options in the same box?
This is an old question but I was wondering if anyone know of any solution to this question? If not I'll sit down and code it my...

meer dan 5 jaar ago | 0

Question


How to download file from dropbox using e.g. websave?
Hi there How does one download a shared file (public visibility) from dropbox? I used to use the following code to achieve th...

bijna 7 jaar ago | 1 answer | 0

1

answer

Question


How to calculate the covariance of two vectors using wcoherence?
Hi there *How does one calculate the covariance of two vectors from the cross-spectrum outputs of the wcoherence function?* ...

ongeveer 8 jaar ago | 0 answers | 0

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answers

Question


Determining toolbox dependency of a series of scripts
Hi there I am trying to determine the toolbox dependency of a handful of scripts, all run using the "MainScript.m". I am usin...

ongeveer 9 jaar ago | 1 answer | 0

1

answer

Question


Why is legend not saved with hgsave/savefig?
Hi there So I am using hgsave or savefig to save my current figure to a .fig which I then open later on with openfig but when...

ongeveer 9 jaar ago | 1 answer | 0

1

answer

Question


Computational Fluid Dynamics (CFD) and Matlab?
I'm wondering: If I wanted to illustrate the 2D/3D air-flow and turbulence around simple solid objects which I define myself, wo...

meer dan 9 jaar ago | 3 answers | 5

3

answers

Question


recommendations for books on global optimization algorithms
Hi all Can anyone recommend any good books on global optimization algorithms? I'd like to get a bit more "under the skin" of ...

meer dan 9 jaar ago | 1 answer | 1

1

answer

Question


Recommended books on machine learning?
Hi all I want to get into the field of machine learning, however there are quite a lot of books out there on the subject. Doe...

meer dan 9 jaar ago | 1 answer | 0

1

answer

Question


Is it possible to move subplot content?
Hi there Say I have a subplot structure of size 3x2 where all 6 subplot handles are stored in a 3x2 matrix. Is it possible to...

meer dan 9 jaar ago | 1 answer | 0

1

answer

Question


Puzzling warning when changing a linear loop to a parfor loop. Need help.
I am trying to change a linear loop of image exporting to a parallel loop. In linear mode the export_fig (the function I am usin...

meer dan 9 jaar ago | 0 answers | 0

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Answered
How to derive the 2D field and convergence based on xy gradients
I just realized that the function div=divergence(U,V) will do just that. Thanks for your response!

meer dan 9 jaar ago | 0

Answered
How to derive the 2D field and convergence based on xy gradients
Hi Torsten Thanks for the swift response! Reg. the second question: I would like to locate mathematically points of con...

meer dan 9 jaar ago | 0

Question


How to derive the 2D field and convergence based on xy gradients
Hi all This might be an easy question but I am a bit stuck on it. The function gradient yields xy gradients of a 2D field: ...

meer dan 9 jaar ago | 3 answers | 0

3

answers

Answered
question concerning rounding of numbers
Thanks for all of your comments. They helped me greatly!

meer dan 9 jaar ago | 0

Question


question concerning rounding of numbers
Hi I am having trouble rounding a number to a fixed number of digits. Can anyone explain the problem I am encountering? (As s...

meer dan 9 jaar ago | 3 answers | 0

3

answers

Question


How do I clear the command window in a parfor loop?
It seems that clearing the command window (clc) is not possible in parfor. How do I achieve this then? I.e. i'd like this loop: ...

ongeveer 10 jaar ago | 1 answer | 0

1

answer

Question


How to set Xcolor=none for an x-axis
Hi all I am creating a new "axes" within an existing plot. I would like to remove the x-axis line of this new "axes" complete...

meer dan 10 jaar ago | 1 answer | 0

1

answer

Answered
Predefining colors for in-text coloring
Repeated googling led me to this solution {\color[rgb]{1 .5 .2}text} /J

meer dan 10 jaar ago | 1

| accepted

Question


Predefining colors for in-text coloring
Hi all I am using the latex approach to coloring segments of e.g. a title. For example: figure plot(rand(10,1),'.') ...

meer dan 10 jaar ago | 2 answers | 1

2

answers

Question


Best global optimization technique
The performance of an optimization algorithm varies greatly depending on the problem at hand. Often performance may vary with st...

meer dan 10 jaar ago | 0 answers | 0

0

answers

Answered
puzzling parfor error during large calculation
I think I may have solved the issue. I dug deep into the optimization code and discovered that it saves a temporary file, and de...

meer dan 10 jaar ago | 1

| accepted

Question


puzzling parfor error during large calculation
Hi there I am running a large number of differential evolution optimization runs on a 4-parameter problem, for different inpu...

meer dan 10 jaar ago | 1 answer | 0

1

answer

Question


Exporting handles in vectors alongside a figure
Hi there I am exporting a number of figures (.fig) using saveas in one script and opening them for further analysis in anothe...

meer dan 10 jaar ago | 0 answers | 0

0

answers

Question


How to suppress text output from a globalsearch run
Suppressing output from, say, patternsearch, is simple enough: options=optimset('Display','off') However, I can't seem t...

meer dan 10 jaar ago | 1 answer | 0

1

answer

Question


Nonlinear optimization problem: The final point is the initial point.
Hi there I am trying to perform a non-linear optimization of a model (non-linear line with 3 input parameters) to a positive ...

meer dan 10 jaar ago | 1 answer | 0

1

answer

Question


nonlinear optimization with dynamic constraints
Hi all Is it possible to assign a dynamic set of constraints when using an optimization routine such as fmincon? Specifically...

meer dan 10 jaar ago | 1 answer | 2

1

answer

Question


Name of convergence method
Hi all This is strictly speaking not a Matlab question, but it does refer to a method I am applying in Matlab and I am unsure...

bijna 11 jaar ago | 1 answer | 0

1

answer

Answered
Slow debugging for long scripts
Hi again Neither of the proposed solutions seem to resolve the situation. It has to be a software situation because even afte...

bijna 11 jaar ago | 0

Question


Slow debugging for long scripts
Hi all I know that ideally I should try to break up long scripts into smaller components, and I plan on doing that, but for n...

bijna 11 jaar ago | 3 answers | 0

3

answers

Question


Servo control, using Matlab
Hi guys I would like to get into the world of controlling servos to perform operations in real-life. Matlab being my preferre...

meer dan 11 jaar ago | 2 answers | 0

2

answers

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