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

plus de 4 ans ago | 0

Answered
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)....

plus de 4 ans ago | 7

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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...

plus de 4 ans 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/...

plus de 4 ans ago | 2 answers | 0

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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 ...

plus de 4 ans ago | 0

Answered
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...

plus de 4 ans ago | 0

Answered
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 ...

presque 5 ans 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...

plus de 5 ans ago | 2 answers | 0

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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 + ...

plus de 5 ans 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...

plus de 5 ans 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...

plus de 5 ans 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...

plus de 5 ans 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...

plus de 5 ans ago

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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 ...

plus de 5 ans ago

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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...

plus de 5 ans 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...

plus de 5 ans ago

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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...

plus de 5 ans 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...

plus de 5 ans 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...

plus de 5 ans ago

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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...

plus de 5 ans ago

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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 ...

plus de 5 ans ago

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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...

plus de 5 ans ago

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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 ...

plus de 5 ans 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...

plus de 5 ans ago

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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.

plus de 5 ans ago

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

plus de 5 ans ago

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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 ...

plus de 5 ans 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...

plus de 5 ans 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:...

plus de 5 ans ago

Answered
Can any body tell me how to implement KSVD in matlab?
Here is a function which implements the K-SVD algorithm. function [ mD ] = DL_KSVD( mD, mX, paramCardinality ) numberO...

environ 6 ans ago | 0