Varoujan

Active since 2013

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147 Solutions

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Question

Correlated x y displacement in image
I want to add a time dependent noise to image, which amounts to adding a pixel dependent noise. For this I used "B = imwarp(A,D...

7 years ago | 0 answers | 0

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Question

Mapping a surface onto another
I have a problem, which should have a relatively simple solution via built-in Matlab functions (or perhaps Image Processing Tool...

8 years ago | 0 answers | 0

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Question

X, Y, Z vectors to image (Error: Assignment has fewer non-singleton rhs dimensions than non-singleton subscripts)
I have three very large vectors (30 million points each). X, Y and T. I'd like to turn this into an image. X has the x-coor...

9 years ago | 1 answer | 0

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Alphabetize by last name
Given a list of names in a cell array, sort the list by the last name. So if list = {'Barney Google','Snuffy Smith','Dagwood ...

10 years ago

Solved

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 ...

10 years ago

Solved

Reverse Run-Length Encoder
Given a "counting sequence" vector x, construct the original sequence y. A counting sequence is formed by "counting" the entrie...

10 years ago

Solved

What's Your BMI?
Find the body mass index. For reference, please refer to Wikipedia here: <http://en.wikipedia.org/wiki/Body_mass_index body ...

10 years ago

Solved

vectorization in N
For a given integer n (n>1), compute the sum f (i) (1 <= i <= n) where f (i) = 1 if n is odd and 2 otherwise.

10 years ago

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Negative matrix
Change the sign of all elements in given matrix.

10 years ago

Solved

Which quadrant?
Given a complex number, output quadrant 'I' 'II' 'III' or 'IV' | II | I | ...

10 years ago

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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.

10 years ago

Solved

Check to see if a Sudoku Puzzle is Solved
*Description:* Your task, should you choose to accept it, is to make a function that checks to see if a 9x9 matrix of integer...

10 years ago

Solved

Sum the numbers on the main diagonal
Sum the numbers on the main diagonal of an n-by-n matrix. For input: A = [1 2 4 3 6 2 2 4 7]...

10 years ago

Solved

2 b | ~ 2 b
Given a string input, output true if there are 2 b's in it, false if otherwise Examples: 'Macbeth' -> false 'Publius Cor...

10 years ago

Solved

Prime factor digits
Consider the following number system. Calculate the prime factorization for each number n, then represent the prime factors in a...

10 years ago

Solved

Generate a vector like 1,2,2,3,3,3,4,4,4,4
Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2...

10 years ago

Solved

Find max
Find the maximum value of a given vector or matrix.

10 years ago

Submitted

XML2Structure(filename)
Creates a clean Matlab structure w/ type from input XML

10 years ago | 1 download |

0.0 / 5

Solved

Solving Quadratic Equations (Version 1)
Quadratic equations have the form: ax^2 + bx + c = 0. Example: x^2 + 3x + 2 = 0, where a = 1, b = 3, and c = 2. The equation has...

10 years ago

Solved

Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.

10 years ago

Solved

Rotate a Matrix
Input a Matrix x, Output y is the matrix rotating x 90 degrees clockwise

10 years ago

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Back to basics 1 - Saving
Covering some basic topics I haven't seen elsewhere on Cody. Given an input variable 'x', save it to disk in a file named 'co...

10 years ago

Solved

Duplicate each element of a vector.
for an n-dimensional vector x, the function should return another vector 2n-dimension which each element is repeated twice. Ex...

10 years ago

Solved

Renaming a field in a structure array
MATLAB has a <http://www.mathworks.com/help/techdoc/ref/setfield.html setfield> and a <http://www.mathworks.com/help/techdoc/ref...

10 years ago

Solved

Arrange vector in ascending order
Arrange a given vector in ascending order. input = [4 5 1 2 9]; output = [1 2 4 5 9];

10 years ago

Solved

Back to basics 21 - Matrix replicating
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, generate an output matrix that consists o...

10 years ago

Solved

Rotate a Matrix by 90 degrees
Rotate a Matrix by 90 degrees Example: If the input is: X = 1 2 3 4 5 6 7 8 9 ...

10 years ago

Solved

Interpolator
You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

10 years ago

Solved

Back to basics 12 - Input Arguments
Covering some basic topics I haven't seen elsewhere on Cody. Return a value equal to the number of input arguments to the fun...

10 years ago

Solved

Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

10 years ago