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vector of integers modification
I have vector of positive integers which I need to modify into vector of consecutive integers with the same ordering. Example: ...

2 years ago | 1 answer | 0

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Question


vectorised code is terribly slower
Why is the vectorized version of simple local maxima detection code significantly slower (~2-3 times) than its for-loop version?...

2 years ago | 0 answers | 0

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Question


ischange in stream or moving window regime
I would like to compute change points (or linearlly segmented signal) from input data stream via moving window. Is there any eff...

2 years ago | 0 answers | 0

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Answered
Is I5 9400f processor is sufficient for deep learning, performing models,Monte Carlo simulation and other heavy works on Matlab
All MC methods are in general extremely CPU consuming. So, soon or later you always reach limits of your computer. From this poi...

2 years ago | 1

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Answered
Replace elements in binary matrix
% B original binary matrix % B_ new binary matrix B_ = ~B;

2 years ago | 0

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specific assignments of vector items
I am looking for suitable algorithm to solve the following problem: For vector v (Nx1, double, single) I need to find assigment...

2 years ago | 0 answers | 0

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elimination of conscutive regions (generalization: ones with zeros between)
I am still looking for better (faster) solution. Any idea how to improve so far best solution: A = [1 -1 0; ...

3 years ago | 1

Question


elimination of conscutive regions (generalization: ones with zeros between)
I need effectively eliminate (by zeroing) the consecutive "1's" between "-1's" and start/end of column at each column of matrix ...

3 years ago | 3 answers | 0

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Answered
elimination of consecutive regions
good idea (only 1D) is <https://www.mathworks.com/matlabcentral/answers/293926-how-do-i-find-4-or-more-consecutive-zeros-and-rep...

3 years ago | 0

Question


elimination of consecutive regions
I need to effectively eliminate consecutive regions in vector "a" or better in rows/columns of matrix "A" with length of separat...

3 years ago | 3 answers | 0

3

answers

Question


how to robustly estimate low and up envelope of signal with trend, few level constant steps and noise
I am looking for robust estimation method of low and up envelope of the signal consisting from smooth trend component, constant ...

3 years ago | 1 answer | 0

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Question


different speed of ODE benchmark with and without MATLAB gui
When I ran matlab benchmark on Linux at MATLAB GUI and at MATLAB command line (without gui) I get the different speed of ODE ben...

3 years ago | 0 answers | 0

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Answered
Incompatible gcc version with mex
Frankly speaking I do not understand why TMW choose the "compatible" compiler version on Linux so terribly. On many distribution...

3 years ago | 0

Submitted


Fast unique random permutations
Fast random sample (without replacement) from unique permutations of an integer vector

3 years ago | 2 downloads |

Question


add limit lines to the gplotmatrix figure
How to add to each subplot of gplotmatrix figure (gplotmatrix(x,[],group)) four separate lines corresponding to the two limits v...

3 years ago | 0 answers | 0

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Answered
find indices of row subsets
So far best solution: function ind = item2ind_new(item,t) t = t(:); [m,n] = size(item); mct = max(accumarray(t,1))...

3 years ago | 0

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Question


find indices of row subsets
I am trying to find vectorized matlab function ind = item2ind(item,t) to solve following problem: I have a list of row vectors ...

3 years ago | 3 answers | 0

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Question


speedup dsearchn for large data set
I am looking for significant speed up of dsearchn function in a case of large input data k = dsearchn(X,XI) where is no...

3 years ago | 1 answer | 0

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Answered
How can i find the equation of a fitted curve line in the curve fitting tool?
Your problem is already solved. When you are able to plot regression line you must know parameters k and q of line equation y = ...

4 years ago | 0

Answered
integer strings decoding ... speed optimization
Probably fastest and simplest solution, I found so far ... using latest new Matlab (>= R2016b) features, see function insertBefo...

4 years ago | 0

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Answered
How to find water vapour density for gaspl
Just try simple googling with the following keywords: water, wapour, density, table I hope you smart enough to find something...

4 years ago | 0

Answered
Error in implemented function
The double precision (default numerical values class in Matlab) is not enough for this kind of computation!!! You need to use s...

4 years ago | 2

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Answered
Function calculates wrong value
See ma answer here: <https://www.mathworks.com/matlabcentral/answers/366977-error-in-implemented-function link>

4 years ago | 0

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Question


integer strings decoding ... speed optimization
I have the following problem: I need decode integer sequences "c" to char string messages "m" by following association: ...

4 years ago | 2 answers | 0

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Answered
how to create symbolic function?
function Z=symZ(N,Thetas,Ndigit) Thetas = sym(Thetas); Zsym = prod((1 - exp(-(N:-1:2).*Thetas))./(1 - exp(-Thetas)),2)...

4 years ago | 0

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Question


how to create symbolic function?
I need to transform the following function to the symbolic form to evaluate it with arbitrary precision. Z(N,Thetas) = prod((...

4 years ago | 2 answers | 0

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Question


Permutations Inversions Counting ... speed up
Hi, this is my code for permutation inversions counting. Any idea how to optimize it to get some additional speedup for large se...

4 years ago | 1 answer | 0

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Question


Again terrible problem with profiler
I am again facing to terrible profiler problem (under Matlab R2017b). I have two codes doing exactly identical computing (counti...

4 years ago | 0 answers | 0

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Question


Permutations Cycles Counting ... speed up
Hi, this is my code for permutation cycles counting. Any idea how to vectorize it to get some additional speedup for large set o...

4 years ago | 4 answers | 0

4

answers

Question


problem with symbolic expression
A have some troubles with conversion of character vector to symbolic expression under R2017a: % character vector e = '(...

4 years ago | 1 answer | 0

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