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...

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....

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 ...

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 ...

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...

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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.

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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...

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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...

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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...

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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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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 ...

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Pizza!

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

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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...

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

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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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]; ...

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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...

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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...

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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...

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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 ...

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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...

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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