Michael Völker

Actif depuis 2011

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Professional Interests: signal processing in MRI

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A safety net for MATLAB's clear command
intercept amok calls to clear() in interactive mode

plus de 9 ans il y a | 1 téléchargement |

Réponse apportée
how do I plot one channel of data when I have 100 channels?
data = randn(100,300); % bad example for actual data channel = 76; % select channel to plot figure, plot(...

plus de 11 ans il y a | 0

| A accepté

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simulate motion in Cartesian MRI
Simulates Point Spread Function (PSF) and k-space data for motion in Cartesian sequences.

plus de 11 ans il y a | 7 téléchargements |

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MRI Partial Fourier reconstruction with POCS
Fast and robust reconstruction of Cartesian partial Fourier MRI data with POCS

environ 12 ans il y a | 4 téléchargements |

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hypersphere / n-sphere
Generate n-dimensional Ellipsoid or Sphere

plus de 12 ans il y a | 1 téléchargement |

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Execute default function of a MATLAB installation
Execute the default function available as an m-file in MATLAB's installation directory.

plus de 12 ans il y a | 2 téléchargements |

Réponse apportée
To find the maximum value in a matrix?
Starting in R2018b, you can use the following command to find the maximum over all elements in an array A: M = max(A, [], 'all'...

plus de 12 ans il y a | 36

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sub2allind
convert subscripts to ALL corresponding indices

environ 13 ans il y a | 1 téléchargement |

A résolu

Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

environ 13 ans il y a

A résolu

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...

environ 13 ans il y a

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Summing digits
Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

environ 13 ans il y a

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Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

environ 13 ans il y a

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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...

environ 13 ans il y a

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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...

environ 13 ans il y a

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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]; and ...

environ 13 ans il y a

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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...

environ 13 ans il y a

A résolu

Who Has the Most Change?
You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

environ 13 ans il y a

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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 ...

environ 13 ans il y a

A résolu

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. Example...

environ 13 ans il y a

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

environ 13 ans il y a

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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 ...

environ 13 ans il y a

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vectorized fibonacci
Given any integer array n, compute an array with the nth fibonacci numbers.

environ 14 ans il y a | 1 téléchargement |

Michael Völker

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