Answered
Convert .mat to .wav
Precisely using this function: audiowrite <https://it.mathworks.com/help/matlab/ref/audiowrite.html>

10 years ago | 4

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Flip the bit
Given an input character string (e.g. '1001'), return a character string with the bits flipped ('0110').

10 years ago

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Integer or Float?
Test an input to see whether it is an integer or a floating point number. If it is an integer return 1 for 'true'. Otherwise ret...

10 years ago

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Special matrix
Make a square matrix with this shape. For n=4 M = 1 1 0 0 1 0 1 0 0 1 0 ...

10 years ago

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What is Sum Of all elements of Matrix
Given the matrix x, return the sum of all elements of matrix. Example: Input x = [ 1 2 0 0 0 0 6 9 3 3 ] ...

10 years ago

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Volume of a sphere given its surface area
You just measured its surface area, that is the input.

10 years ago

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Remove the Zero
Given an array n, remove all zeros

10 years ago

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Create an index-powered vector
Given a input vector x, return y as index-powered vector as shown below. Example x = [2 3 6 9] then y should be [...

10 years ago

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Simple date to serial no. conversion
Convert a date string to a serial date number. For example if you take x='19-May-2001' then the result is 730990 x...

10 years ago

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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.

10 years ago

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Matrix of almost all zeros, except for main diagonal
Write a program to input an integer n and build a n-by-n matrix with the numbers 1,2,...,n on the main diagonal and zeros elsewh...

10 years ago

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Is My Wife Wrong?
Answer the question. (see also <http://www.mathworks.com/matlabcentral/cody/problems/149-is-my-wife-right Problem 149: Is my ...

10 years ago

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commutative?
Given the handle to a binary function that takes two ordinary numbers, test if the function is commutative.

10 years ago

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Square a Number
Given an input x, return y, which is equal to the square of x.

10 years ago

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square number
Square a number

10 years ago

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Area of a circle
Find the value for area of the circle if diameter is given

10 years ago

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Getting the indices from a matrice
Getting the indices from a matrice. Inspired by Problem 645. Getting the indices from a vector by the great Doug Hull. Given a...

10 years ago

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Half-Swap
Given a vector with an even number of elements, rearrange it so that the elements in its first half are switched with those i...

10 years ago

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Relative ratio of "1" in binary number
Input(n) is positive integer number Output(r) is (number of "1" in binary input) / (number of bits). Example: * n=0; r=...

10 years ago

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root?
* Given a function 'foo', and a position 'there', find the root near 'there'. * For example: If foo=@sin, and there=3.1, then r...

10 years ago

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Matlab Basics - Switching Assignments
Switch assignments for variables x and y, for example start with x = 1 and y = 3 end with y = 1 and x = 3 Do NOT simply r...

10 years ago

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Matlab Basics II - squares
Write a function that takes matrix A, and squares each element in the matrix example: A = [1 2 3] output = [1 4 9]

10 years ago

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Modify an array's elements
Write a for loop that iterates from 1 to numberSamples to double any element's value in dataSamples that is less than minValue. ...

10 years ago

Answered
How to speed up a for loop ?
Operate on rows, not columns: angle=asin(A(3,:))/(sqrt(A(3,:).^2+A(2,:).^2+A(1,:).^2)); This will work.

10 years ago | 3

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Palindrome Check
Check whether the entire matrix is palindrome or not. Example matrix = [7 8 7] matrix_reverse = [7 8 7] So the mat...

10 years ago

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"Low : High - Low : High - Turn around " -- Create a subindices vector
Let two vectors *lo* and *hi* be given. The job is to create a index vector like so idx = [lo(1):hi(1) lo(2):hi(2) ...]...

10 years ago

Answered
Using impoly on a surface plot.
After launching your code, click on the sufrace and impoly will work.

10 years ago | 3

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Sum the 'edge' values of a matrix
Sum the 'edge' values of an input matrix (the values along the perimeter). Example [1 2 3 4 5 6 7 8 9] Output = ...

10 years ago

Answered
Hello, I have been trying to surf two parallel circles but data dimensions don't match and I don't know why. Any help would be nice. Thank you, Omar
You doubled Z, delete the Z=[Z;Z]; line and everything will be fine.

10 years ago | 3

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Sum function: Counting cookies
Row array troopCookieSales contains the number of boxes of cookies sold by each troop member. Assign totalSales with the sum of ...

10 years ago