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Grzegorz Knor


Warsaw Institute of Aviation

1,189 total contributions since 2010

Professional Interests: data science, finite element method, signal processing

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How to subtract?
*&plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn* * Imagine you need to subtract one...

2년 이하 ago

Answered
anyone have source code of fuzzy c means?
There is <https://uk.mathworks.com/help/fuzzy/fcm.html fcm> function from <https://uk.mathworks.com/help/fuzzy/index.html?s_cid=...

약 2년 ago | 1

Question


Live Editor and view neural network
Hi, I would like to add a neural network graphical diagram to my live script. Unfortunately command <https://uk.mathworks.co...

약 2년 ago | 1 answer | 0

1

answer

Answered
How to get 15-min average values from 10 min average values?
I suggest to use interpolation: <https://uk.mathworks.com/help/matlab/ref/interp1.html interp1> t1 = 10:10:60 av1 = [3, ...

약 2년 ago | 0

Answered
save image in matlab
Please read this topic in a documentation: <https://www.mathworks.com/help/matlab/creating_plots/save-figure-at-specific-size-a...

약 2년 ago | 0

| accepted

Answered
Question on imageDataStore syntax and parameters
All 'Name-Value Pair' arguments are described in the documentation: <https://uk.mathworks.com/help/matlab/ref/imagedatastore.ht...

약 2년 ago | 0

| accepted

Answered
re-train a pre-trained autoencoder
To encode data from retrained network you need to create new network, which contains only encoder layer. Please see the code (it...

약 2년 ago | 1

Answered
I want to create random bumps on a flat surface
You can add <https://en.wikipedia.org/wiki/Gaussian_function#Two-dimensional_Gaussian_function Two-dimensional Gaussian function...

약 2년 ago | 0

| accepted

Answered
Read the data from specific line in MATLAB
For the first time use <https://uk.mathworks.com/help/matlab/import_export/import-data-interactively.html Import Tool> and then ...

약 2년 ago | 0

Answered
How could I find the start index of an "approximate" pattern in a binary vector
I would try <https://uk.mathworks.com/help/matlab/ref/regexp.html regular expressions> : case1 = [0 0 0 0 0 0 0 1 1 1 0 0 0...

약 2년 ago | 0

Answered
Logistic Function Transform of vector values
Matrix dimensions must agree. Add dot before division ( */* ): S1=(1./(1 + exp(1).^(-1*Stemp)))

약 2년 ago | 0

| accepted

Question


Convolutional neural network: parallel layers
Is it possible to create a CNN with parallel layers in MATLAB? For example I would like to build network similar to this one: ...

약 2년 ago | 2 answers | 2

2

answers

Answered
How to determine which algorithm mldivide (A\b) uses
For sparse matrices check function <https://uk.mathworks.com/help/matlab/ref/spparms.html spparms> : spparms('spumoni',2) ...

2년 이상 ago | 2

Answered
How to calculate moving average in a matrix?
From MATLAB R2016a there are functions _<https://uk.mathworks.com/help/matlab/ref/movmean.html%20 movmean>_ and _<https://uk.mat...

2년 이상 ago | 0

Answered
Create a moving average
From MATLAB R2016a there is a function _<https://uk.mathworks.com/help/matlab/ref/movmean.html%20 movmean>_ which does not requi...

2년 이상 ago | 3

Question


Pareto chart and XTickLabelRotation
Is there a way to plot Pareto chart and rotate XTick labels properly? Let's look at the code: y = randi(1e3,10,1); name...

2년 이상 ago | 1 answer | 0

1

answer

Solved


Calculate some equation
Using given inputs x and z, make two outputs that are y1 = (xz)/(x/z)^2 + 14x^2 - 0.8z^2 y2 = x^z - z^x + (x/z)^2 - (z/x...

2년 이상 ago

Solved


Let's get back to school, and create multiplication tables
For a given range, create multiplication tables. (start is always < endno) Example start = 17 endno = 19 Then, ...

2년 이상 ago

Solved


Skip by a multiple
Given an integer create an array of its multiples. Array must have a length of 15

2년 이상 ago

Solved


Rounding off numbers to n decimals
Inspired by a mistake in one of the problems I created, I created this problem where you have to round off a floating point numb...

2년 이상 ago

Solved


Concatenate strings
concatenate a variable number of input strings to produce one outputstring

2년 이상 ago

Solved


Calculate area of sector
A=function(r,seta) r is radius of sector, seta is angle of sector, and A is its area. Area of sector A is defined as 0.5*(r^2...

2년 이상 ago

Solved


Replace values under a limit
For a vector x and number n, the goal is to find every element of x inferior to n and replace it by n. Example x= [ 1 2 3...

2년 이상 ago

Solved


Matrix FUN
Given a Matrix M, find out the number of elements of matrix that are divisible by 3. M = [1 2 3;4 5 6;7 8 9]; ou...

2년 이상 ago

Solved


BASICS - sum part of vector
Please make a function, where as input you get vector "x" and and vector "c", where in "c" vector you get indexes to sum. Examp...

2년 이상 ago

Solved


Summation of array
Given an array, Find the sum of all of the elements in it Examples: Input x = [1 2 3 5; 4 5 6 7]; Output y is 33

2년 이상 ago

Solved


Back to Basics - Find no. of elements in a matrix?
Let A be a m*n matrix. Find the total no. of elements in A ? (Hint - formula based) A = [1 2 3;4 5 6]; output = 6

2년 이상 ago

Solved


Vector creation
Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.

2년 이상 ago

Solved


Evil Number
Check if a given natural number is evil or not. Read more at <https://oeis.org/A001969 OEIS>.

2년 이상 ago

Solved


Convert yards to feet
The goal of this script is to convert a value given in yards to feet.

2년 이상 ago

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