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index exceeds matrix dimensions??
does dH_df of that line have any values <0.8? If it doesn't 'a' will grow to be bigger than the matrix and it would throw that ...

15 years ago | 0

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While Generating Elements While Creating a Matrix, the following happened.....
A = sym(zeros(2,4)) %?

15 years ago | 0

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Multiply vector elements by their index (optimization question)
%Sample data ary1 = (1:10).'; ary2 = rand(1,10); Points = 10; %Matrix Method v = (0:(Points-1)); ary4 = ary1+sum(exp(1i*(v'...

15 years ago | 0

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Elegant code: How do I make my if,switch, etc. statements more compact?
just use a for-loop. All of your indices and results appear to be dependent on the case #. Use the case # to make your matrix....

15 years ago | 0

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z=xy
perhaps you means an element-wise multiplication? z = x.*y; what you're doing above is a matrix multiplication from line...

15 years ago | 1

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Answered
Splitting Images?
swap1324 = @(x)([x((floor(size(x,1)/2)+1):end,(floor(size(x,2)/2)+1):end) x((floor(size(x,1)/2)+1):end,1:floor(size(x,2)/2)); ...

15 years ago | 2

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Answered
Creating 2D geometric shapes?
I would guess the image actually isn't losing information, you're just zoomed out enough that it's not displaying everything (co...

15 years ago | 1

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cog in a single image frame and multiple frames
Use the equation: <http://en.wikipedia.org/wiki/Center_of_mass here>

15 years ago | 0

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Writing elegant MATLAB code
I would do your above operation with: rgb3 = zeros(size(rgb)); for ii = 1:3 rgb3(:,:,ii) = sum(bsxfun(@times,reshape(...

15 years ago | 0

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Displaying series of images in an axes in a GUI
Use the axes(H) command to set the current axis to your axis of choice doc axes

15 years ago | 1

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How to save a variable from a function and use it in another function in MATLAB GUI?
<http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.3F FAQ>

15 years ago | 1

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3-D Surface
<http://blogs.mathworks.com/loren/2011/06/13/calculating-the-area-under-a-surface/ Loren's Blog Entry>

15 years ago | 1

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plotting selected lines from a matrix
doc subplot Then use a FOR-loop to navigate through. figure; for ii = 1:3 subplot(3,1,ii) hold on plot(matrix(...

15 years ago | 1

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beyer matrix
Try imshow(R,[]); You may just not be looking at the full range of values. *ADDENDUM per comment* I'm not sure what you're ...

15 years ago | 0

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Update Graph With Data Input
You want drawnow doc drawnow; for more info

15 years ago | 0

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Saving a result of each loop´into a new vector
A = zeros(length_of_column,number_of_vectors) for ii = 1:number_of_vectors a_result = some_function(stuff(ii)); A(:,ii...

15 years ago | 0

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Answered
??? Error using ==> mldivide Matrix dimensions must agree.
What line does it say the error is on? I'll bet it's on that line where you do a left matrix division '/'.

15 years ago | 0

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How to find the size of a cell array
A = cell(20,11); size(A) ans = 20 11 works for me... ? Or do you want the size of the contents of each cell? cells...

15 years ago | 6

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how to use mod in variable that have big value
No. You've hit the limits of double precision floating point arithmetic. You would want vpi, which is no longer available, or ...

15 years ago | 0

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how to set gui's input to decimal
str2double is what you want doc str2double

15 years ago | 0

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Answered
noise levels
A = 20; %amplitude of 10 - noise noise = (rand(size(I))-.5)*A); Inoisy = I+noise;

15 years ago | 0

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Draw the mode shapes and get the natural frequencies of the cantilever beam(with a force in free end)
Aren't the eigenvectors the buckling modes? ~ Corresponding to the (ascending) sorted eigenvalues? To change it to a cantilev...

15 years ago | 0

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finding interior region
You could also do an Ibwnoholes = imfill(I,'holes'); which will fill the holes and then that boundary won't show up.

15 years ago | 0

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substituting values into an array
You can't have period(0), it tries to reference this when i = 1 period(2,0:end); %substituting T(1) Start your indexin...

15 years ago | 0

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Answered
2D points to 3D Matrix
So put them in order! Then do the work: idx_sorted = sortrows(xypts,[1 2]); %sort them ij = reshape(idx_sorted,[10 14 2]); ...

15 years ago | 0

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Vectorize calculating a co-variance matrix for every RGB pixel in an image
<http://www.mathworks.com/matlabcentral/fileexchange/25977-mtimesx-fast-matrix-multiply-with-multi-dimensional-support FEX: mtim...

15 years ago | 0

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Matlab rounding to zero?
int16((.05/65536)) ans = 0 Multiplication by zero is always zero... Convert to single or double precision.

15 years ago | 1

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can this code be sped up?
Mat = zeros(n,m); before the two for-loops will speed this up immensely for large [m n]. Also, you don't need to set j=1 in ...

15 years ago | 0

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Out of memory problem
Even of class double a 512x512x200 matrix is only 419430400 bytes - hardly very much in today's world. How many other variable...

15 years ago | 0

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fsolve
preallocate beta beta = zeros(nmax+1,1); beta(1) = beta_of_1; for ii = 1:nmax beta(ii+1) = fsolve(F,beta(ii)); end *EDIT...

15 years ago | 0

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