Panos Kerezoudis

Last seen: 27 jours il y a | Actif depuis 2023

Followers: 0 Following: 0

Programming Languages:
MATLAB
Spoken Languages:
English

Statistiques

All

Afficher les badges

Feeds

Question

Segment data into overlapping windows
Hi! I have a vector of time series data (1x300), that I would like to segment into 20 segments that are 100 ms in duration and ...

environ 2 ans il y a | 1 réponse | 1

1

réponse

Question

Group values in a vector
Hi, I have a long column vector ('trialnr', attached), whose elements are integer numbers from 1 to 55 (they index events in t...

plus de 2 ans il y a | 1 réponse | 0

1

réponse

Question

Sort elements in cell array in descending order
Hi! I hava a cell containing three row vectors and I would like to sort each vector in descending order. Other than using a ...

plus de 2 ans il y a | 1 réponse | 0

1

réponse

Question

Signal auto-correlation in matlab (xcorr function)
Hi! I am working on an EEG-electrophysiology dataset ('csd'). It is structured as a 3D array (channels x time x trials). The d...

plus de 2 ans il y a | 2 réponses | 0

2

réponses

Question

Arrange column vetors into table
Hi! I used the findpeaks function in matlab to find local maxima ('peaks') in a vector and their indices ('locs'). I would li...

plus de 2 ans il y a | 1 réponse | 0

1

réponse

Question

Attach first column with names to matrix with coordinates
Hi! I have a matrix ('positions') with 3 columns (x,y,z coordinates) and 200 rows (intracranial electodes). I also have a cha...

plus de 2 ans il y a | 1 réponse | 0

1

réponse

Question

Plot legend labels using loop
I am plotting the power spectrum from 16 channels. PSD was calculated using the pwelch function and its output has 3 dimensions:...

plus de 2 ans il y a | 1 réponse | 0

1

réponse

Question

Bar plot of categorical data
Hi! I have a small column vector (46x1). Each row has a number (0-7), where each number encodes a specific electrode location. ...

presque 3 ans il y a | 1 réponse | 0

1

réponse

A résolu

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]; ...

presque 3 ans il y a

A résolu

Roll the Dice!
*Description* Return two random integers between 1 and 6, inclusive, to simulate rolling 2 dice. *Example* [x1,x2] =...

presque 3 ans il y a

A résolu

Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

presque 3 ans il y a

A résolu

Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

presque 3 ans il y a

A résolu

Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

presque 3 ans il y a

A résolu

Flip the vector from right to left
Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...

presque 3 ans il y a

A résolu

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...

presque 3 ans il y a

A résolu

Doubling elements in a vector
Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

presque 3 ans il y a

A résolu

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...

presque 3 ans il y a

A résolu

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:...

presque 3 ans il y a

A résolu

Return a list sorted by number of occurrences
Given a vector x, return a vector y of the unique values in x sorted by the number of occurrences in x. Ties are resolved by a ...

presque 3 ans il y a

Question

MATLAB Problem. How to design matrix from eigenvalues
This is a previously posted problem that I am working on but I can't find any solutions online. Here is the description: Write...

presque 3 ans il y a | 2 réponses | 0

2

réponses

Question

Make loop more efficient
Hi! I am new to Matlab and I am currently going through coding exerices to become more skilled at it. I would appreciate any h...

presque 3 ans il y a | 1 réponse | 0

1

réponse

A résolu

Convert a numerical matrix into a cell array of strings
Given a numerical matrix, output a *cell array of string*. For example: if input = 1:3 output is {'1','2','3'} whic...

presque 3 ans il y a

A résolu

Create a vector whose elements depend on the previous element
The idea is to create a vector A whose elements depend on the previous element : *A(i+1) = 2*A(i)+1* *2 Inputs*: - A : The...

presque 3 ans il y a

A résolu

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...

presque 3 ans il y a

A résolu

Find the mean of two vectors
Take two vectors, and output the mean of them (bonus if you don't use the in-built mean function)

presque 3 ans il y a

A résolu

Replace 0 indices in array with 1's
Take a incoming vector, and replace 0's with ones

presque 3 ans il y a

A résolu

Simple Vector Addition
Take two incoming vectors and output the sum of the two vectors

presque 3 ans il y a

A résolu

Rescale Scores
Each column (except last) of matrix X contains students' scores in a course assignment or a test. The last column has a weighted...

presque 3 ans il y a

A résolu

presque 3 ans il y a

A résolu

presque 3 ans il y a

Charger plus