ChristianW
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M.Sc. Aeronautics and Astronautics Student in flow with MATLAB.
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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...
11 years ago | 0
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 ...
11 years ago | 0
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 ...
11 years ago | 0
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...
11 years ago | 0
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; % ...
11 years ago | 0
Reading many files in one loop
doc dir D = dir([myfolder 'my*file*name*.*']); files = {D.name}';
11 years ago | 0
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 ....
11 years ago | 0
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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)
11 years ago | 0
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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...
11 years ago | 15
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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...
11 years ago | 0
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Wrong way to index: Index exceeds matrix dimensions
max(Z) is greater then 2270?
11 years ago | 0
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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...
11 years ago | 0
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; %...
11 years ago | 0
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) ...
11 years ago | 0
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...
11 years ago | 0
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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...
11 years ago | 0
Read image and save it using imwrite?
Input_folder = '.\'; % folder with big images Output_folder = 'c:\result'; D = dir([Input_folder 'image*_big.bmp']); ...
11 years ago | 2
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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: ...
11 years ago | 0
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From logical to binary ?
Try w=char(bin2dec(reshape(num2str(w),8,[]).')).';
11 years ago | 0
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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 ...
11 years ago | 0
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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...
11 years ago | 0
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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...
11 years ago | 0
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);
11 years ago | 1
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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>.
11 years ago | 1
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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...
11 years ago | 0
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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 ...
11 years ago | 1