Solved


Convert from Fahrenheit to Celsius
Given an input vector |F| containing temperature values in Fahrenheit, return an output vector |C| that contains the values in C...

4 years ago

Solved


Matrix of Multiplication Facts
This is James's daughter again, sneaking into his Cody account. Thanks to your help in my math class last year, I did great! B...

4 years ago

Solved


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

4 years ago

Solved


Go to the head of the class!
You're given a matrix and a single number. If that number is in the matrix, reorder the matrix so that number is in the first r...

4 years ago

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Must be in the front row...
You are given a matrix followed by a single number. Your object is to write a script that will shift the matrix around so that ...

4 years ago

Solved


Magnet and Iron
(Inspired from <http://www.mathworks.com/matlabcentral/cody/problems/112 Problem 112: Remove the air bubbles>) Iron (atomic n...

4 years ago

Answered
Why do I get a wrong plot?
I contacted the author of the paper. It turned out that the equation for the diffraction OTF has a typo. The correct one is ...

4 years ago | 0

| accepted

Solved


Word Counting and Indexing
You are given a list of strings, each being a list of words divided by spaces. Break the strings into words, then return a maste...

4 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...

4 years ago

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Replace Nonzero Numbers with 1
Given the matrix x, return the matrix y with non zero elements replaced with 1. Example: Input x = [ 1 2 0 0 0 ...

4 years ago

Solved


Matrix multiplication across rows
Given matrix m, return matrix n such that, rows of n are result of multiplication of the rows of the input matrix Example ...

4 years ago

Solved


A matrix of extroverts
Now that the introverts have had their script, the extroverts spoke up (naturally!) and demanded one as well. You will be given...

4 years ago

Solved


Convert matrix to 3D array of triangular matrices
Given a 2D numeric array x in which each column represents the vectorized form of an upper triangular matrix, return a 3D array ...

4 years ago

Question


Why is a regular expression used in this code?
I found a code to dump zero rows/columns in the southeast part of a given matrix: function b = ZeroDumping(a) regexp '' '(?...

4 years ago | 1 answer | 0

1

answer

Solved


Too Many Zeros, Dump Them!
Sometimes when I create a matrix, I use this syntax: a = zeros(1000,1000); But when the function ends, I find that I don'...

4 years ago

Solved


Enlarge array
Given an m-by-n numeric array (A) and a 1-by-2 vector (sz) indicating the dimensions [p q] to enlarge each element, return an (m...

4 years ago

Solved


Remove entire row and column in the matrix containing the input values
Remove the entire row and column from the matrix containing specific values. The specified value can be a scalar or a vector. Fo...

4 years ago

Solved


frame of the matrix
Given the matrix M, return M without the external frame.

4 years ago

Solved


subtract central cross
Given an n-by-n square matrix, where n is an odd number, return the matrix without the central row and the central column.

4 years ago

Discussion


How to use a optimization toolbox in MATLAB Cody problem?
I'm trying to solve one problem in Cody, but a function 'fmincon' is not recognized by the online compiler. Is there any way to ...

4 years ago | 0

Question


How to use a optimization toolbox in MATLAB Cody problem?
I'm trying to solve one problem in Cody, but a function 'fmincon' is not recognized by the online compiler. Is there any way to ...

4 years ago | 1 answer | 0

1

answer

Solved


Given a matrix, swap the 2nd & 3rd columns
If a = [1 2 3 4; 1 2 3 4; 1 2 3 4; 1 2 3 4]; then the result is ans = 1 3 2 4 1 3 2...

4 years ago

Solved


matrix zigzag
Unfold a 2-D matrix to a 1-D array in zig-zag order, e.g., for matrix [ 1 2 3 ; 4 5 6 ; 7 8 9 ] the resulting 1-...

4 years ago

Question


Why do I get a wrong plot?
I'd like to make a plot of a quantity called "PSF" but I cannot get a correct result for some reason. I will first explain the t...

4 years ago | 1 answer | 0

1

answer

Solved


Calculate Amount of Cake Frosting
Given two input variables |r| and |h|, which stand for the radius and height of a cake, calculate the surface area of the cake y...

4 years 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 years ago

Question


How to fix the GPU warning?
Hello, I'm trying to use GPU libraries (especially, gpuArray) on an HPC cluster but I constatnly get an error below: --- Wa...

4 years ago | 1 answer | 0

1

answer

Answered
imresize error. "Expected input method to be a string or a character vector. Allowed values are: 'cubic' or 'bicubic'."
I could solve this problem by retrieving the array from the GPU by gather function. grayImage = gather(gpu_grayImage); grayI...

4 years ago | 0

| accepted

Question


imresize error. "Expected input method to be a string or a character vector. Allowed values are: 'cubic' or 'bicubic'."
I get the error message: Expected input method to be a string or a character vector. Allowed values are: 'cubic' or 'bicubic'...

4 years ago | 3 answers | 0

3

answers

Question


How to make the negative sign in the legend easier to see?
I generated the following legend in my plot but the negative sign ('-') is hard to see. I tried several different fonts but it d...

4 years ago | 2 answers | 0

2

answers