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

Answered

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...

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

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.

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

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)....

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

Answered

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...

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

Answered

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 ...

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

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...

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

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 ...

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

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

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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

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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...

mer än 7 år ago

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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

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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...

mer än 7 år 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 ...

mer än 7 år 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...

mer än 7 år 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 ...

mer än 7 år ago

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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

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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.

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