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Niklas Kurz


Last seen: ongeveer een maand ago |  Active since 2020

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How to add every nth element of an array to the nth+1 element?
I wonder if there is a short expression for the task above. For example if I had an array like this a = [1, 2, 3, 3, 4, 5, 5, 6...

6 maanden ago | 1 answer | 0

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answer

Question


How to design a solid Body for even Meshing in Matlab? (Hemisphere)
Hello dear Matlab community, I currently try to: create a surface from x y z coordinates (easily done with meshgrid and surf) ...

ongeveer een jaar ago | 1 answer | 0

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answer

Question


Solve Equation with symbolic Constants numerically.
Say I have got the Planck's law whose maximum I want to determine numerically: % a = hbar/(pi^2*c^3) % b = hbar./(kB*T); ...

meer dan een jaar ago | 1 answer | 0

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Question


Using Matlab to solve 1D Schrödinger Equation (Strange Eigenfunctions)
Following this splendid tutorial (in Python) I tried recreating the code in Matlab First of, here the Python Code: % impor...

meer dan een jaar ago | 2 answers | 0

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answers

Question


App designer: How to define self-referring properties?
I'm getting into app designer once again, and right from the start I'm getting desperate. When defining a property, I receive a...

bijna 2 jaar ago | 1 answer | 0

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answer

Question


How to convert a string into a variable name and assign it a cell of data?
I've read multiple post: converting a string into a variable name seems quite problematic, but in my case convenient. It's abou...

bijna 2 jaar ago | 1 answer | 0

1

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Question


How to use string as plot arguments
I was fiddling around a lot: Having two plots, I want to spare some work and define a common string to feed into both plots argu...

ongeveer 2 jaar ago | 1 answer | 0

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Question


Increasing speed by fixing axis and grid outside of a loop
Heres a minimal example of what I mean: Axis and grid are set before the loop Pos = [0 0]; axis([0 1 0 1]); grid on ...

ongeveer 2 jaar ago | 1 answer | 0

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answer

Question


While loop with all elements meeting the conditions
How do I set a while loop that runs until all elements meet the condition? For instance: t = -100:200; F = t; ind...

ongeveer 2 jaar ago | 1 answer | 0

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Question


How to combine 2 function handles of different variables?
Strangely enough I was not able finding an answere to this sinewy problem: Given 2 function handles mu = @(n, dmu, mubar)...

ongeveer 2 jaar ago | 2 answers | 0

2

answers

Question


Using Matlab to create a LaTex document (for image import)
In order to import multiple figures in LaTex from one folder I have found following code: fileID = fopen('./incl_img_latex.t...

meer dan 2 jaar ago | 1 answer | 0

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Question


How to give trail to particles/ How to fade out plots with time (complex example)
Inspired from a webproject I have created this n-body-simulation: First of a function to acces on: % calculating accelerati...

meer dan 2 jaar ago | 2 answers | 0

2

answers

Question


Matlab simulation for planet motion
There were some attemps simulating planetary motion already, but I think mine is straightforward by solving and updating positi...

meer dan 2 jaar ago | 2 answers | 0

2

answers

Question


How to plot wave function for finite square well? [Physics question]
A question addressed to other physicist among the MATLAB community: Considering a finite sqaure well potential: It turns o...

meer dan 2 jaar ago | 1 answer | 0

1

answer

Question


LaTex for Titles in Appdesigner now possible?
I'm now finding into appdesigner myself and have saw multiple people asking how to incorporate LaTex. There are some workaro...

meer dan 2 jaar ago | 1 answer | 0

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Question


How to plot symbolic function with string specification?
Briefly I want to execute syms x f = x fplot(f,'b','LineWidth',2) but a little fancier. I want the specification to be a ...

bijna 3 jaar ago | 2 answers | 0

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answers

Question


Matlab wouldn't find simple inverse
Given the function defined via syms x a real; f = x^(a-1) Why Matlab won't find an inverse to that? finverse(f) is resulti...

bijna 3 jaar ago | 2 answers | 0

2

answers

Question


How to plot vectors exactly on the edge of another graph?
The best I've got is expressed by the following: clear [u,v] = meshgrid(-2:0.2:2); f = u.^2+v.^2-1; [du,dv] = grad...

ongeveer 3 jaar ago | 1 answer | 0

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answer

Question


Matlab warning when using log
I have quiete a long script basically just consiting of comments for plotting pairs of points and customizing the resulting plo...

ongeveer 3 jaar ago | 1 answer | 0

1

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Question


How to fit a gaussian to unnormalized data
I do know this question has been asked in several kinds plus it's rather a mathematical question for mathstack like sites. But...

ongeveer 3 jaar ago | 1 answer | 0

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Question


Does order of multiplication really matter when using simplify ?
I noticed, when I type the following commands: syms x; syms n integer; cn = int(abs(x)*exp(-i*n*x),x,-pi,pi); cnp = ...

meer dan 3 jaar ago | 2 answers | 0

2

answers

Question


expand and simplify are not reverse?
I thought any symbolic function that I expand I can simplify getting same results in both direction. But it seems to be just one...

meer dan 3 jaar ago | 1 answer | 0

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Question


How to show axis in 3D
Any time I plot in 3D I get a little confused because of aggravated orientation. The main reason is the missing default visualis...

meer dan 3 jaar ago | 1 answer | 0

1

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Question


improper integral: exp(ikx) undefined in Matlab?
I wanna integrate: With solution: But Matlab gives NAN: syms x k; assume(k,'integer'); int(exp(1i*k*x),x,-inf,inf)

meer dan 3 jaar ago | 1 answer | 0

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answer

Question


How to fill a volume plot of a vector valued functions (with 3 variables)
Again, I'm ascending new ground, now dealing with volume plots. I'm aware of Matlabs documentary concering this topic. But it do...

meer dan 3 jaar ago | 1 answer | 0

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answer

Question


Filling inside of a plot with color (gradient)
I'm coming back to filling areas with color, trying this time to get the most beautiful result: Here I've got the plain vect...

meer dan 3 jaar ago | 1 answer | 0

1

answer

Question


How to include function in legend
I tried all possibl string2functions of Matlab, but not getting quiete the result. Here's my best try: syms x F = x^2; % ...

meer dan 3 jaar ago | 2 answers | 0

2

answers

Question


Two different solutions for one differential equation (population model)
I'll try solving the ODE: Substituting Transforming to: Solving I get: Finally, after back substitution: complete so...

meer dan 3 jaar ago | 1 answer | 0

1

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Question


Error when using variable in axis
I've: syms w we B U A = (w*U)/(sqrt((-w^2+we)^2+(B*w)^2)); syms R L C Aw = subs(A,{B,we},{R/L,1/(L*C)}); fplot(su...

meer dan 3 jaar ago | 1 answer | 0

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Question


How to set Assumptions for function handle?
easy case: I'v gut a function handle: f = @(x,y,z)x.^2+y.^2+z.^2-1; fimplicit3(f) for plotting an implicit function. Now ...

meer dan 3 jaar ago | 1 answer | 0

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