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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;

plus de 6 ans il y a | 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);

plus de 6 ans il y a | 1

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

plus de 6 ans il y a | 1

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

plus de 6 ans il y a | 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)));

plus de 6 ans il y a | 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

plus de 6 ans il y a | 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...

plus de 6 ans il y a | 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...

plus de 6 ans il y a | 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...

environ 7 ans il y a | 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 ...

environ 7 ans il y a | 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.

environ 7 ans il y a | 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.

environ 7 ans il y a | 0

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

environ 7 ans il y a | 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 ...

environ 7 ans il y a | 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)); ...

environ 7 ans il y a | 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);

environ 7 ans il y a | 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...

environ 7 ans il y a | 0

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i want code to convert image to text
You can use deep learning networks from the neural networks toolbox: nnet = alexnet; % Load pretrain...

presque 8 ans il y a | 0

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interpolating Sample data to finer increment
Vq = interp2(X,Y',Weights, -17.5:0.5:17.5, (-15:0.25:15)');

presque 8 ans il y a | 0

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How to set the y-axis values to be only integers?
plot(x) a = axis; axis([a(1) a(2) 0 4]); set(gca, 'YTick', 0:4)

presque 8 ans il y a | 2

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what is the difference between double and im2 double?
im2double converts to double and rescales the image to [0, 1].

presque 8 ans il y a | 1

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Finding out values for elements of an array from corresponding array elements?
You can represent your weights as a matrix using NaN for the diagonal elements that do not exist: Weights = [NaN, 0.79,0.31...

presque 8 ans il y a | 0

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Question about plotting/vectors
When x is a vector you have to use element-wise multiplication and division sigmax=(F/(pi*R))-((4*F*R.*x.^2)./(pi.*K)).*C

presque 8 ans il y a | 1

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A résolu


Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

presque 8 ans il y a

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Resacaling an array to align and plot beside another
x = 1:600; A = rand(1, 600); y = 1:2:600; B = rand(1, 300); plot(x, A, y, B)

presque 8 ans il y a | 0

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how to use LUT form configuring matrix
Use your matrix as index to LUT: Mnew = LUT(M);

plus de 8 ans il y a | 0

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need to gray-rgb transforming
The idea is to convert a color map to an RGB image stripe of size 1 x N, where N is the number of entries in the colormap, and t...

plus de 8 ans il y a | 0

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How do I check that input is numerical?
Using isnumeric

plus de 8 ans il y a | 3

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How can I extract all matrix element neighbors ?
You have to ensure that the indices are always valid, i.e., between 1 and the maximum number of rows / columns. For example, wha...

plus de 8 ans il y a | 0

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Citing MATLAB Optimization Toolbox (BibTex reference)
I would use something like this @misc(MatlabOTB, key = {MATLAB Optimization Toolbox}, title = {MATLAB Optimizatio...

plus de 8 ans il y a | 4

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