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ChristianW


Active since 2013

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M.Sc. Aeronautics and Astronautics Student in flow with MATLAB.
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Answered
assigning a a structured 2x2 matrix using a loop
M = 5; centroid = rand(M,2); detresp = struct('a',num2cell(centroid,2),'c','d'); or detresp = struct('a',cell...

ungefär 10 år ago | 0

Answered
The function "nchoosek" is not working in my code
cnt{1}=[3;1;3;2;1;2] cnt{2}=[2;3;1;3;1;2] value = cellfun(@(x) nchoosek(x(x~=1),2),cnt,'un',0); or with loop ...

ungefär 10 år ago | 0

Answered
How can I have editable text inside a listbox?
<http://www.mathworks.de/matlabcentral/fileexchange/24861-41-complete-gui-examples Matt Fig GUI Examples> Search for listbox ...

ungefär 10 år ago | 0

Answered
Sharing Three Dimensional Array Variable Among GUIs
In a GUIDE its provided to use the handles structure. But, using global does also work. You need to declare the variable as g...

ungefär 10 år ago | 0

Answered
Roulette Algorithm Probability Loop
To summarize the strategie: *You allways lose all your money.* This is for 37 slots, only one zero slot. bet0 = 5; % ...

ungefär 10 år ago | 0

Answered
Reading many files in one loop
doc dir D = dir([myfolder 'my*file*name*.*']); files = {D.name}';

ungefär 10 år ago | 0

Answered
How to make a signal vector?
S = [S1;S2]

ungefär 10 år ago | 0

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Answered
How to stop a for loop execution from GUI?(From Toolbar stop button)
You can write your flag in the |UserData|-property of the toolbaricon. ... set(handles.uitoolbar1,'UserData',0) for ....

ungefär 10 år ago | 0

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Answered
Calculate average of multiple matrices by reading an m.file
k = 0; while (reading file) ... k = k+1; match(k,:) = strcmp('Hello', out) end M = mean(match)

ungefär 10 år ago | 0

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Answered
How to add additional info to the data cursor?
function test_main % Plots graph and sets up a custom data tip update function fig = figure('DeleteFcn','doc datacursorm...

ungefär 10 år ago | 15

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Answered
Importing text from Excel sheets
Here's an example on how to use fprintf with cells: C{1} = sprintf('Hello\n'); c = {'A','B','C';1,2,3}; C{2} = sprint...

ungefär 10 år ago | 0

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Answered
Wrong way to index: Index exceeds matrix dimensions
max(Z) is greater then 2270?

ungefär 10 år ago | 0

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Answered
How do i plot a bounding box around the output of a Moving object algorithm?
With Image Processing Toolbox: doc regionprops An example: BW = imread('text.png'); imshow(BW) bb = regionprops...

ungefär 10 år ago | 0

Answered
Plot legend with multiple fitresult curves
x = 1:10; y = sin(x); f = fit(x',y','cos(x+a)'); h1 = plot(x,y,'ok'); hold on h2 = plot(f); X = 1:0.1:20; %...

ungefär 10 år ago | 0

Answered
Quadratic integration coding error
The trapz inputs are just points. But quad needs a function as input. x = 0:1:10; y = sin(x); A_trapz = trapz(x,y) ...

ungefär 10 år ago | 0

Answered
open wav file error
myFile=[PathName,FileName];

ungefär 10 år ago | 0

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Answered
About isinteger command(confusion)
doc isinteger isinteger(int8(3))

ungefär 10 år ago | 0

Answered
How can I create draggable lines in a BW-Mask in an image overlay?
This might be usefull for you: function test close all imagesc(peaks), axis off, axis image, hold on d = [10 25 20...

ungefär 10 år ago | 0

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Answered
How to use image sc and contour?
n = 20; % 2000 takes long calculation time fot contour X = randi(1000,n); [C,h] = contour(X,[400 600]); axis image se...

ungefär 10 år ago | 0

Answered
Read image and save it using imwrite?
Input_folder = '.\'; % folder with big images Output_folder = 'c:\result'; D = dir([Input_folder 'image*_big.bmp']); ...

ungefär 10 år ago | 2

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Answered
for loop with stored variables
There are several ways. I would make for the Plantary Temperature (Te) a new function, and vectorize Albedo (A). Like this: ...

ungefär 10 år ago | 0

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Answered
From logical to binary ?
Try w=char(bin2dec(reshape(num2str(w),8,[]).')).';

ungefär 10 år ago | 0

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Answered
Nested for loop in parfor, indexing
You could use a seperated variable for the inner loop. On the example of x: X = zeros(M,N); %preallocate parfor i=1:M ...

ungefär 10 år ago | 0

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Answered
Help in Syntax of Eval and Sprintf
Y = cell(size(mydate1)); % preallocate for k = 1:length(mydate1) str = [mydate1{k} '::' mydate2{k}]; % Date String R...

ungefär 10 år ago | 0

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Answered
Apollo Capsule 3D Model
doc patch Depending on your model complexity, you could use 3D CAD software and save as *.stl. There's a function called rn...

ungefär 10 år ago | 0

Answered
Elementwise diff() with an condition
X = {[1,2,4,5],[23,12,13]}; Y = cellfun(@diff,X,'un',0); B = 1.5; Ycut = cellfun(@(x) x(abs(x)>B),Y,'un',0);

ungefär 10 år ago | 1

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Answered
How to use an Xbox Controller in Matlab for real time signal processing?
With Simulink 3D Animation there is a <http://www.mathworks.de/de/help/sl3d/joystickinput.html Joystick Block>.

ungefär 10 år ago | 1

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Answered
I tried to solve this system of ODE and it took so long to give me results.
Pretty sure your function hang up in the while loops. I guess it should be IF instead of WHILE. while 2<r This is an en...

ungefär 10 år ago | 0

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Answered
logical indexing is usually faster than find
n = 1e6; r = rand(n,1); f = randn(n,1)+10; si = r>0.5; tic j = find(si); s1 = f(j); % with FIND ...

ungefär 10 år ago | 1

Answered
trouble with latex font labels and legends when importing tiff figure on word 2010 or LyX
Use .emf for word if possible and try .ps for Lyx.

ungefär 10 år ago | 0

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