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Torsten K


Last seen: ungefär en månad ago
25 total contributions since 2020

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Answered
NARX with multiple time series: Data dividision problem
OK, I found the solution. Here is a small example, based on this example: load magmulseq; y_mul = catsamples(y1,y2,y3,y1,y2...

3 månader ago | 0

| accepted

Answered
basic error, help me
Is this what you are looking for? clearvars; x = linspace(20,100000); y = 20*log10(1./(1+(2*3.14*x*985.1*(59*10.^-9)-(985....

3 månader ago | 0

Answered
how to save an array in each iteration?
Here a variant with a 3d-matrix: clearvars; A = zeros(6,6,3) L = 3; SR = [ 0.0941 0.1129 0.0471 0 ...

3 månader ago | 0

| accepted

Answered
how to save an array in each iteration?
Maybe a cell-array is what you are looking for? A = cell(3,1); L = 3; SR = [ 0.0941 0.1129 0.0471 0 ...

3 månader ago | 0

Solved


Pascal's Triangle
Given an integer n >= 0, generate the length n+1 row vector representing the n-th row of <http://en.wikipedia.org/wiki/Pascals_t...

3 månader ago

Solved


Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

3 månader ago

Solved


Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

3 månader ago

Solved


Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

3 månader ago

Solved


Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

3 månader ago

Question


NARX with multiple time series: Data dividision problem
Hello everyone, I want to train a NARX-model for multi-step prediction of time series. The task has the following boundary cond...

3 månader ago | 1 answer | 0

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Solved


Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

3 månader ago

Solved


Is my wife right?
Regardless of input, output the string 'yes'.

3 månader ago

Solved


Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

3 månader ago

Answered
How can I change all the elements in a matrix with value1 to a new value2?
How about this? m = randi([0,1],78) % 78x78 matrix with random integers in the interval 0..1 m(m==0)=-1 % Substitute all 0's b...

3 månader ago | 0

Solved


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

4 månader ago

Solved


Add two numbers
Given a and b, return the sum a+b in c.

4 månader ago

Question


Heatmap: Vector of x values ​​contains duplicate values
Hello everybody, I would like to create a heatmap in which the X-Labels are repeated. The X-Label categories are the strings "L...

4 månader ago | 1 answer | 0

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answer

Solved


Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; ...

4 månader ago

Solved


Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

4 månader ago

Solved


Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

4 månader ago

Solved


Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

4 månader ago

Solved


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

4 månader ago

Solved


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

4 månader ago

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

4 månader ago

Question


Multi-step prediction of a dynamic time series with jumps and decay curves using NARX networks
Hello everybody, I am trying to predict a dynamic time series with a sequence of sloping curve sections with the help of a NARX...

5 månader ago | 0 answers | 0

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