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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...

ongeveer 10 jaar 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 ...

ongeveer 10 jaar 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 ...

ongeveer 10 jaar 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...

ongeveer 10 jaar 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; % ...

ongeveer 10 jaar ago | 0

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

ongeveer 10 jaar ago | 0

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

ongeveer 10 jaar 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 ....

ongeveer 10 jaar 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)

ongeveer 10 jaar 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...

ongeveer 10 jaar 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...

ongeveer 10 jaar ago | 0

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

ongeveer 10 jaar 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...

ongeveer 10 jaar 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; %...

ongeveer 10 jaar 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) ...

ongeveer 10 jaar ago | 0

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

ongeveer 10 jaar ago | 0

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

ongeveer 10 jaar 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...

ongeveer 10 jaar 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...

ongeveer 10 jaar 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']); ...

ongeveer 10 jaar 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: ...

ongeveer 10 jaar ago | 0

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

ongeveer 10 jaar 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 ...

ongeveer 10 jaar 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...

ongeveer 10 jaar 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...

ongeveer 10 jaar 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);

ongeveer 10 jaar 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>.

ongeveer 10 jaar 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...

ongeveer 10 jaar 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 ...

ongeveer 10 jaar 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.

ongeveer 10 jaar ago | 0

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