Answered
combining planes of data
M = cat(3, plane1, plane2, plane3,[more planes], plane512);

9 years ago | 1

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Simple way to wrap quotes around input
str = ['''' str ''''];

9 years ago | 1

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How to mirror matrix on the diagonal?
I2 = rot90(fliplr(I),-1);

9 years ago | 4

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Answered
I have a problem with a plot
plot(x, y1); hold on plot(x, y2) or plot(x, y1, x, y2)

9 years ago | 1

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Low computation efficiency of simple sentence in MATLAB
Instead of X = repmat(lambda_old1,1,4).*[W1(:,i),W3(:,i),W2(:,i),W4(:,i)]; if might be faster to use X = bsxfun(@time...

9 years ago | 1

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Answered
How can I correct inhomogeneous intensity in image?
I = im2double(imread('blob.bmp')); y = mean(I(:, 1:100), 2); sigma = 30; % choosen by visual inspection G = f...

9 years ago | 0

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Answered
How can I solve the " Index exceeds matrix dimensions" error for the following code ?
Don't use negative indices like -2, they are always invalid. Valid indices in Matlab start with 1 and end with the number of ele...

9 years ago | 0

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reading a .txt
First check if the encoding is ISO-8859-1, such that accents are read correctly: if ~strcmp(feature('DefaultCharacterSet'), ...

9 years ago | 0

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i have to save colour thresholded images in different folder according to their rgb values , but i can't work ..all the images are showing with the imshow() function but it can't stored on different folder as per their rgb values..pls help this out
Something is wrong with your condition, "out" is undefined. You can write if(red>88 & red<111 & green >86 & green <104 &...

9 years ago | 0

Answered
Randomize three chosen arrays in matlab
A = [0,0,1]; B=[0,1,0]; C=[1,0,0]; X = [A; B; C]; x = X(sub2ind(size(X), 1:3, randi(3, [1, 3])))

9 years ago | 0

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concatenate all value in a matrix into one number
This works even if the numbers are not single digits, i.e., in in {1,2,...,9} v = [10 20 4]; num = sscanf(sprintf('%d', v...

9 years ago | 0

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Answered
Connecting line between different points obtained from a for-loop
x = 1:20; y = x+2; plot(x,y,'*-')

9 years ago | 0

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Matlab delete's value's from array
You remove all rows that contain a NaN in the line k(any(isnan(k),2),:)=[]; and then you assign the variables varia...

9 years ago | 0

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how can i find the displacement in pixels for the 1st, 3rd and 5th squares in the picture
% number here found by visual inspection I = im2double(imread('1.JPG')); index_center = size(I,2)/2+100:size(I,2...

9 years ago | 1

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Answered
Change the default filling of a matrix
I do not know anyway to change the default behaviour of Matlab to fill the empty positions with zeros. So you have to do it in t...

9 years ago | 0

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Trying to make a "snake" matrix?
N = 5; M = 9; T = reshape(1:M*N, [M, N])'; T(2:2:end,:) = fliplr(T(2:2:end,:));

9 years ago | 0

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Answered
Elimination of rows in array
A(A(:,1)+A(:,2) < A(:,3) | A(:,1)+A(:,2) > A(:,4), :) = [];

9 years ago | 0

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Answered
setting the position of the legend
The height of the box is the fourth parameter of the position. To reduce the size you can do the following: p = leg.Positio...

9 years ago | 0

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How to make this complicated array
x = 5; y = 8; a(x,y) = 0; a([1:x 2*x:x:y*x y*x-1:-1:x*(y-1)+1 x*(y-2)+1:-x:x+1]) = 1:2*x+2*(y-2);

9 years ago | 0

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Comparing a number matrix to certain values and storing it in another array / matrix
R = 5*rand(4); A = zeros(size(R)); A(R>=1 & R <= 2) = 1; B = zeros(size(R)); B(R>=3 & R <= 4) = 2;

9 years ago | 0

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How to replace name with number
[~, ~, xnum] = unique(x, 'stable')

9 years ago | 0

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How to change the language of 2015b (32bit) from english to chinese?
<http://de.mathworks.com/help/matlab/internationalization.html>

9 years ago | 0

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Creating file names for save command
file_dir = 'C:\Users\mydir'; datestamp=char(datetime('now','TimeZone','local','Format','yyyyMMdd_HHmmss')); file_name...

9 years ago | 0

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How to assign two values randomly among 2 variables?
idx = rand(100,1); sensor1 = c1; sensor1(idx>0.5) = c2; sensor2 = c1; sensor2(idx<=0.5) = c2;

9 years ago | 0

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Find a pair of elements in a 3d matrix
Logical index: idx = A(:,:,1) == 0 & A(:,:,2) == 0; if you prefer a single index, you can use idx2 = find(idx); if...

9 years ago | 0

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Answered
optimization to get the least ratio of variables for two functions
You get the index of the minimum ratio A/B using [~, idx] = min(A./B);

9 years ago | 0

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I am trying to compute the background markers of an image and in that process I am first binarizing the image by thresholding.For that I am using "imbinarize" and it is not working.I have given the description below.
In the Image processing TB there is a function im2bw

9 years ago | 1

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How to calculate compound interest?
If you have amount A at an interest rate of r, you have after one month A + rA = A(1 + r) after two months A(1+r) + ...

9 years ago | 0

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How can I create shortcuts to layouts
You can set Shortcuts under Matlab > Preferences > Keyboard > Shortcut, but only for some pre-defined actions; changing the layo...

9 years ago | 0

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Save multiple images in a folder
You have to use a new name for each image; e.g., for your i'th image: filename = sprintf('myimage%02d.png', i);

9 years ago | 0