Community Profile # Michal Kvasnicka

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64 total contributions since 2015

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Question

MATLAB Connector not running
I am using Matlab Connector on Linux (LinuxMint 19.3 based on Ubuntu 18.04). When I start MATLAB connector (v 1.4.0.6) and the...

18 days ago | 0 answers | 0

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Question

how can I effectively compute expected value by histogram approximation of probability desnsity function
What is the proper way to compute effectively (fast) the expected value E(x) in a case when I have approximation of probability ...

3 months ago | 1 answer | 0

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Question

symbolic function with specific properties
I need to implement the symbolic function E(m(x)), where x = [x1, ..., xN] are symbolic variables, with the folowing property: ...

3 months ago | 0 answers | 0

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Check if I have done everything right
Your riemann function is completely wrong! Try this: function [integral] = riemann(x) integral = sum(calc...

4 months ago | 0

Randomly sorting rows while keeping column relationships the same
Apermrows = A(randperm(size(A,1)),:)

4 months 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...

4 months ago | 0

Does Matlab support GTX 1660 graphics card?
Definitely yes!!! Did you install the proper nvidia driver on your system?

4 months 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 ...

4 months ago | 1 answer | 0

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Question

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: ...

4 months 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?...

5 months 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...

5 months ago | 0 answers | 0

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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...

6 months ago | 1

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

7 months ago | 0

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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...

10 months 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; ...

1 year 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 ...

1 year ago | 3 answers | 0

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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...

1 year 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...

1 year ago | 3 answers | 0

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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 ...

1 year ago | 0 answers | 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...

1 year ago | 0 answers | 0

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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...

1 year ago | 0

Submitted

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

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...

1 year ago | 0 answers | 0

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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))...

1 year 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 ...

1 year 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...

2 years ago | 1 answer | 0

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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 = ...

2 years 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...

2 years 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...

2 years ago | 0