Thorsten

Universität Gießen

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Solve a System of Linear Equations
*Example*: If a system of linear equations in _x&#8321_ and _x&#8322_ is: 2 _x₁_ + _x₂_ = 2 _x₁...

2年以上前

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Verify Law of Large Numbers
If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....

2年以上前

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Find the Oldest Person in a Room
Given two input vectors: * |name| - user last names * |age| - corresponding age of the person Return the name of the ol...

2年以上前

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Convert from Fahrenheit to Celsius
Given an input vector |F| containing temperature values in Fahrenheit, return an output vector |C| that contains the values in C...

2年以上前

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Calculate Amount of Cake Frosting
Given two input variables |r| and |h|, which stand for the radius and height of a cake, calculate the surface area of the cake y...

2年以上前

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how can I edit a matrix and rename it at the same time?
You can do it like this: my_matrix = rand(4,9); edited_matrix = my_matrix; edited_matrix(:,8) = [2;4;6;1];

約3年前 | 0

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Different colours for arrows in quiver plot
Create a circular colormap: cmap = colormap(hsv(360)); In the loop: compute the angle and an index into the colormap from...

約3年前 | 1

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how do i change subfunctions to a switch
switch question case 1 % code of function 1 case 2 % code of function 2 case 3 % code of function 3 otherwise ...

約3年前 | 0

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Find the perfect overlay of 2 maps of points
You can maximize the number of perfect matches, that is the number of red points with zero distance to a blue point.

約3年前 | 0

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one two three four
Replicate B such that is is as long or longer than A, then cut it to the length of A; B = repmat(B, 1, ceil(numel(A)/numel(B)...

約3年前 | 0

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Error using horzcat Dimensions of matrices being concatenated are not consistent.
You can only concatenate vectors horizontally if they have the same number of rows. But here you have 256 and 18 rows. sp this d...

約3年前 | 0

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Text in while loop creating matrix
You have to use cell arrays if you want to mix text and numbers. And fprintf returns the number of printed bytes, so you directl...

3年以上前 | 0

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could anyone help me how to check the idx position containing value is not equal to zero
To check if any value of idx is zero, you can use any(idx == 0)

3年以上前 | 0

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I have a 101 by 23 matrix, where first column is the ID of persons. I want to extract each value of every person <1.5, and store them in a new matrix, SO resultant matrix should have all values <1.5 and rest can be substituted to 0.
lowscale = numData; lowscale(lowscale < 1.5) = 0;

3年以上前 | 0

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Ich brauche Hilfe mit der Matrix
1:1 umgesetzt muss es doch 1 statt l heißen: verbraucher_AC=everything(s,1); leistung_AC=Leistungswert(s,1);

3年以上前 | 1

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Rearrange halves of yaxis in graph
i = find(x == 1.25); y = y([i+1:end, 1:i]);

4年弱前 | 1

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How do i bring the user(cursor) to the 1st figure plot out of many figures ?
fig(1)

4年弱前 | 0

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How can I generate random number between 1 and 10, and at the same time I want to exclude number 3 & 6?
x = setdiff(1:10, [3, 6]); r = x(randi(numel(x)));

4年弱前 | 4

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using 2 indexs for loop
for i=1:length(mHome) for k=1:2:size(mHome,2)-1 output1(i,k)=pdist([mHome(i,k:k+1);mBall(i,1:2)]); end end

4年弱前 | 1

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I keep getting undefined function when preallocating
index = 1:30; % Preallocate S1QAmb = zeros(size(index)); % index has to be defined before it can be used for i = index S...

4年弱前 | 0

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How to save the output of a loop with sequential file numbers.
for i:size(bounding_box, 1) face_crop = imcrop(I, [227,227]) filename = sprintf('%02d.jpg', 2*i - 1); imwrite(fac...

4年弱前 | 0

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Common legend for multiple histograms in subplots
Set the FaceColor explicitly before calling legend: set(line1, 'FaceColor', 'r') set(line2, 'FaceColor', 'g') set(lin...

4年以上前 | 0

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how to create a video with a looming stimulus
This version works without exporting. In the code you can first choose 'test' to see if the sequence of images is what you want ...

4年以上前 | 0

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Incorrect number of output arguments for 'pre_test_fixpt'. Expected 1, but found 2.
You show code for pre_test, but the error is about pre_test_fixpt. Have a look at how you call this function in your code.

4年以上前 | 0

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Why am I getting two different plots for the exact same matrix?
Maybe it helps if you transpose the matrix to get it right.

4年以上前 | 0

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Converting third dimension of 3D matrix to 1xN object
struct(ii).Image = A(:,:,ii);

4年以上前 | 0

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here I am trying to get the random matrix with the elements only 1 and 0 where none of columns and rows can be 0 only and also the number of 0s and 1s should be in a percentage of 30% and 70%.
N=5; % size ok = false; maxiter = 1000; i = 1; while ~ok & i < maxiter ...

4年以上前 | 1

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Setting certain pixels in a grayscale image to RGB (red) for MIP
From the above discussion, I came up with this solution: % fake some data X = rand(10, 10, 23); N = prod(size(X)); ...

4年以上前 | 1

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Calculate weighted average of a 2D matrix
X = rand(376, 481); w = rand(1, size(X, 2)); Xw = bsxfun(@times, X, w); m = mean(Xw, 2);

4年以上前 | 0

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How to make axis invisible? But not xlabel and ylabel!
The trick is to create handles to the labels and use these handles to re-set the color of the labels after the color of the axes...

4年以上前 | 0

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Thorsten

Universität Gießen

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