Michal Kvasnicka
61 total contributions since 2015
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Awarded to Michal Kvasnicka on 09 Oct 2019
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Awarded to Michal Kvasnicka on 29 Jun 2019
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Awarded to Michal Kvasnicka on 14 Nov 2017
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Awarded to Michal Kvasnicka on 20 Jul 2017
Solve a problem for the first time
Awarded to Michal Kvasnicka on 24 Aug 2015
Check if I have done everything right
Your riemann function is completely wrong! Try this: function [integral] = riemann(x) integral = sum(calc...
24 días ago | 0
Randomly sorting rows while keeping column relationships the same
Apermrows = A(randperm(size(A,1)),:)
24 días ago | 2
| accepted
running functions in multiple instances
You need to run three function on two matlab instances simultaneously? If yes, so open two separate instances of Matlab and run...
24 días ago | 0
Does Matlab support GTX 1660 graphics card?
Definitely yes!!! Did you install the proper nvidia driver on your system?
24 días ago | 0
| accepted
Question
ranking of vector with non-unique elements
I need to perform fast ranking of the vector with non-unique elements, like in the following example: F = [10.1 31.0 20.5 20.5 ...
alrededor de 1 mes ago | 1 answer | 0
1
answerQuestion
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: ...
alrededor de 1 mes ago | 1 answer | 0
1
answerQuestion
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?...
alrededor de 1 mes ago | 0 answers | 0
0
answersQuestion
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...
alrededor de 2 meses ago | 0 answers | 0
0
answersIs 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...
3 meses ago | 1
| accepted
Replace elements in binary matrix
% B original binary matrix % B_ new binary matrix B_ = ~B;
4 meses ago | 0
| accepted
Question
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...
7 meses ago | 0 answers | 0
0
answerselimination 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; ...
alrededor de 1 año 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 ...
alrededor de 1 año ago | 3 answers | 0
3
answerselimination 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...
alrededor de 1 año 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...
alrededor de 1 año ago | 3 answers | 0
3
answersQuestion
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 ...
alrededor de 1 año ago | 0 answers | 0
0
answersQuestion
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...
más de 1 año ago | 0 answers | 0
0
answersIncompatible gcc version with mex
Frankly speaking I do not understand why TMW choose the "compatible" compiler version on Linux so terribly. On many distribution...
más de 1 año ago | 0
Submitted
Fast unique random permutations
Fast random sample (without replacement) from unique permutations of an integer vector
más de 1 año ago | 0 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...
más de 1 año ago | 0 answers | 0
0
answersfind 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))...
más de 1 año ago | 0
| accepted
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 ...
más de 1 año ago | 3 answers | 0
3
answersQuestion
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...
más de 1 año ago | 1 answer | 0
1
answerHow 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 = ...
casi 2 años ago | 0
integer strings decoding ... speed optimization
Probably fastest and simplest solution, I found so far ... using latest new Matlab (>= R2016b) features, see function insertBefo...
casi 2 años ago | 0
| accepted
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...
casi 2 años ago | 0
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...
casi 2 años ago | 2
| accepted
Function calculates wrong value
See ma answer here: <https://www.mathworks.com/matlabcentral/answers/366977-error-in-implemented-function link>
casi 2 años ago | 0
| accepted
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: ...
casi 2 años ago | 2 answers | 0
2
answershow 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)...
casi 2 años ago | 0
| accepted
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