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Q: How to remove outline circle in this image?
A simple method is to use "bwlabel". This assigns each of the non-touching white areas a unique number. You can then pick each o...

10 years ago | 0

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Synchronise real time to simulation time
If you use the "sim" command to run a simulink model, via matlab code, you can use tic & toc to measure how long it took to comp...

10 years ago | 0

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average of each two vectors of a matrix
(x(2:2:10,:) + x(1:2:9,:))/2 Thats the "simple" answer. There are other methods that are more flexible, but which need a lit...

10 years ago | 1

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Answered
Undefined function 'times' for input arguments of type 'cell'
When you want to access the contents of "M", you need to access it like this: M{:,1}

10 years ago | 1

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'for loop' for beginners?
The error is because you're trying to get the user to enter a list of numbers with a function that only allows ONE number to be ...

10 years ago | 0

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Best way to nest parfoor in for loops?
There are a few things to consider - 1. Is each loop iteration entirely independent of the prior ones? - If not, you can't ...

10 years ago | 1

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Answered
help with this basic matlab code..
The answer you're looking for is actually really really really horrible: Mean_process_cut_cut_image_posi = rot90(cut_2,3); ...

10 years ago | 0

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generate random numbers with exact mean and std
A sequence of equal numbers of -1 and 1 has a mean of 0 and a population standard deviation of precisely 1. That sequence of...

10 years ago | 0

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Create a pattren to execute specfic commands
B = [C{1,1:5}];

10 years ago | 1

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Problem with logical indexing with arbitrary indices
aarray(find(r(1,1)==1)) = bindices(end); A. That's not logical indexing. r(1,1) == 1 can only return a scalar logical ...

10 years ago | 0

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what's the difference between handles and hObject?
handles is a structure holding ALL of the handles for the GUI. hObject, is JUST the handle for the GUI object used. eventd...

10 years ago | 4

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Performance of structures as function arguments
Yes. The "Good reason", is that an equation, say, L = 1/2 * rho * Vel.^2 * area * (alpha*P1 + P0); Is far quicker to...

10 years ago | 0

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Answered
how to value nan number in a vector? and how to do the same calc in a 2d matrix?
You've got an x & y vector, so this would remove the NaNs: nans = isnan(Y) || isnan(X); Y(nans) = []; X(nans) = []; ...

10 years ago | 0

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Split a matrix into a two submatrixes by a condition
This is the "simple" answer: male = ex3(find(ex3(:,1) == 1),:); female = ex3(find(ex3(:,1) == 0),:);

10 years ago | 0

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How can I cast 4 octets in 32bit signed integer type ?
typecast(uint8([1 2 3 4]),'int32')

10 years ago | 0

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The role of singleton elements in calls to the zeros function.
Matlab only really needs to know which dimensions are "nonsingular". - A scalar has infinite dimensions, all with a size of 1. ...

10 years ago | 0

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Missile guidance system not reaching target
You're missing something. Heres a multiple choice question that'll suit- Do you want your missile to explode? A. afte...

10 years ago | 0

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Need help figuring out how to save values
As it's homework, I'll just say the keyword you want. persistent

10 years ago | 0

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how can remove corner of binary image??
If you repeatedly erode & dilate (imerode & imdilate) the image you should get close to what you want if you use the right "neig...

10 years ago | 0

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Transfer and execute function
I don't quite get what you're asking: Are you saying that you want to use a variable function for something? In which case yo...

10 years ago | 0

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How to keep precision of Math Operations?
You are probably getting more than 2 decimal places of "accuracy". You're probably getting 15 or 16 significant figures worth of...

10 years ago | 0

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Is there any way to do an operator on a specific region
A simple way is to simply chop it off: % (Tune the numbers for what you need) LowerLeftquad = my_image(74:end,1:30); % ass...

10 years ago | 0

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How can I integrate something times a function file?
This example uses "sin", instead of whatever function you're using to get your integrand. to_be_integrated = @(x)(sin(x).^2*...

10 years ago | 0

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Count equal values in multiple matrices
If you can concatenate your matrices in the 3rd dimension: x_oth = X2; x_oth(:,:,2) = X3; ... Then you may be able ...

10 years ago | 0

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Reading text from an excel file and populating a matrix with those values.
[numbers_only text_only both] = xlsread(filename,sheet_4); Then one of: network_station_coordinates = numbers_only; % ...

10 years ago | 0

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Answered
How to change the name of variables using a loop?
Cells ARE the way to go. Structures would be preferable to what you want mystruct.description = 'blah blah'; mystruc...

10 years ago | 1

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Goto command in matlab: Undefined function 'goto' for input arguments of type 'double'"
Ok, so you've downloaded a function "goto" from the file exchange, and it's probably just using "eval" on every line from the on...

10 years ago | 1

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How do I find the Nth high number in a matrix A ?
values = 1:500; sorted = sort(values,'descend'); sorted(5)

10 years ago | 0

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Make a connection between MATLAB-VISUAL BASIC via ActiveX as a bridge,
Using activeX is a bit of a pain. HOWEVER, if you look at the code for xlsread/xlswrite, you'll see that there is a whole load o...

10 years ago | 1

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Answered
getting error of not enough input argument?
gumbelpdf, gumbelcdf, gumbelinv are all functions that we don't have, so we can only say how to fix your error properly gumbe...

10 years ago | 0