Mark Wagshul

Albert Einstein College of Medicine

Last seen: 10 meses hace | Con actividad desde 2013

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How do I convert an array into a set of indices using colon notation?
I have two 4D matrices. Each is approximately 150 x 150 x 150 x 3 (the "3" is exact in both matrices). The 4th dimension in Ma...

casi 9 años hace | 1 respuesta | 1

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Pregunta

What is the most efficient way to fill a 4D array?
I would like to fill a 4D array as follows, give a 4D array shift1: newShift(j,k,l,1:3) = constant + [j k l] + shift1(j,k,l...

casi 9 años hace | 2 respuestas | 0

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

alrededor de 13 años hace

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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

alrededor de 13 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...

alrededor de 13 años hace

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Replace NaNs with the number that appears to its left in the row.
Replace NaNs with the number that appears to its left in the row. If there are more than one consecutive NaNs, they should all ...

alrededor de 13 años hace

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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...

alrededor de 13 años hace

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

alrededor de 13 años hace

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Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

alrededor de 13 años hace

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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...

alrededor de 13 años hace

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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. Example...

alrededor de 13 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.

alrededor de 13 años hace

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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 ...

alrededor de 13 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 ...

alrededor de 13 años hace

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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...

alrededor de 13 años hace

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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 ...

alrededor de 13 años hace

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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:...

alrededor de 13 años hace

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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...

alrededor de 13 años hace

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Real time pixel position in a GUI
Thanks, but that will only display the pixel position and image value in the window (bottom of the figure). I need to have acce...

más de 13 años hace | 0

Pregunta

Real time pixel position in a GUI
I have a series of images which change as a function of time (i.e. a 3D matrix, two spatial, one time). I would like to display...

más de 13 años hace | 3 respuestas | 1

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