Pregunta

Creating Convolution Matrix of 2D Kernel for Different Shapes of Convolution
MATLAB, for thos who have access to Image Processing Toolbox offers the function convmtx2(). Yet there are 2 issues: It is onl...

más de 7 años hace | 4 respuestas | 1

4

respuestas

Problema

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 ...

más de 7 años hace | 0 | 4 solvers

Respondida
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...

alrededor de 8 años hace | 1

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

casi 9 años hace | 0

Respondida
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)....

casi 9 años hace | 7

Respondida
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...

casi 9 años hace | 0

Pregunta

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/...

alrededor de 9 años hace | 3 respuestas | 0

3

respuestas

Respondida
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 ...

alrededor de 9 años hace | 0

Respondida
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...

alrededor de 9 años hace | 0

Respondida
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 ...

más de 9 años hace | 0

Pregunta

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...

casi 10 años hace | 2 respuestas | 0

2

respuestas

Resuelto

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 + ...

casi 10 años hace

Resuelto

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...

casi 10 años hace

Resuelto

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...

casi 10 años hace

Resuelto

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...

casi 10 años hace

Resuelto

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...

casi 10 años hace

Resuelto

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 ...

casi 10 años hace

Resuelto

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...

casi 10 años hace

Resuelto

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...

casi 10 años hace

Resuelto

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...

casi 10 años hace

Resuelto

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...

casi 10 años hace

Resuelto

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...

casi 10 años hace

Resuelto

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...

casi 10 años hace

Resuelto

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 ...

casi 10 años hace

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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...

casi 10 años hace

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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 ...

casi 10 años hace

Resuelto

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...

casi 10 años hace

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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.

casi 10 años hace

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

casi 10 años hace

Resuelto

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 ...

casi 10 años hace