Problem

Generate Convolution Matrix of 2D Kernel with Different Convolution Shapes (Full, Same, Valid)
In this problem the challenge is to build the Matrix Form equivalent of the function conv2() of MATLAB. The function to be ...

mer än 5 år ago | 0 | 3 solvers

How can I determine whether a string contains a substring?
I guess that since MATLAB R2016b it is recommended to use contains : Determine if pattern is in strings - MATLAB contains - M...

mer än 5 år ago | 1

Functional form of the colon (:) operator?
I really wish MATLAB would add function to vectorize arrays into column vector as the colon operator does.

mer än 6 år ago | 0

Change opacity of Lines
In newer versions of MATLAB you can do that easily using the Color property of the line. By default it is RGB array (1 x 3)....

mer än 6 år ago | 7

GUI - Slider which has two slide bars
Maybe you meant a Range Slider which you can create as shown in <http://undocumentedmatlab.com/blog/sliders-in-matlab-gui Slider...

mer än 6 år ago | 0

Question

Display Pixel Values in Image - Alternative to showPixelValues()
Hello, I would like to display an image and its pixel values in a similar manner to <https://www.mathworks.com/matlabcentral/...

mer än 6 år ago | 3 answers | 0

### 3

What is missing from MATLAB?
What I miss the most is better forum for the community. We need Math Equation support through MathJaX (Like in StackExchange ...

mer än 6 år ago | 0

How to perform KNN regression
At each point you want to calculate the value (x, y) find the K closest point (For x). Then average them to create the new va...

mer än 6 år ago | 0

Averaging Overlapping Pixels in Sliding Window Operation
Another option would be: I = reshape(accumarray(mIdx(:), mZ(:), [(M * N), 1], @(x) mean(x)), [M, N]); Where mZ is the ...

nästan 7 år ago | 0

Question

Saving Figure Data into a Matrix
Hello. I'm using 'image()' to display an image. I'm adding some annotations using text. I'd like to save the final resu...

mer än 7 år ago | 2 answers | 0

### 2

Solved

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 + ...

mer än 7 år ago

Solved

Bullseye Matrix
Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...

mer än 7 år ago

Solved

Return the largest number that is adjacent to a zero
This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

mer än 7 år ago

Solved

Find the longest sequence of 1's in a binary sequence.
Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

mer än 7 år ago

Solved

Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

mer än 7 år ago

Solved

Remove all the consonants
Remove all the consonants in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill'; Output s2 is 'a ...

mer än 7 år ago

Solved

Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

mer än 7 år ago

Solved

Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

mer än 7 år ago

Solved

Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

mer än 7 år ago

Solved

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...

mer än 7 år ago

Solved

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. Examp...

mer än 7 år ago

Solved

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...

mer än 7 år ago

Solved

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 ...

mer än 7 år ago

Solved

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...

mer än 7 år ago

Solved

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 ...

mer än 7 år ago

Solved

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...

mer än 7 år ago

Solved

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

mer än 7 år ago

Solved

Given a and b, return the sum a+b in c.

mer än 7 år ago

Solved

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 ...

mer än 7 år ago

Solved

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...

mer än 7 år ago