# Will Hardiman

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Unwrap does not work for vector

I just re-read the documentation for unwrap, where it clearly says: Q = unwrap(P,tol) compares the jump between elements of P t...

7 months ago | 0

| accepted

Question

Unwrap does not work for vector

I have a vector, y, calculated as atan(a/b). Naturally when b is close to 0 the tan function exhibits a phase wrap: y = atan(a/...

7 months ago | 1 answer | 0

### 1

answerSolved

Create an index-powered vector

Given a input vector x, return y as index-powered vector as shown below. Example x = [2 3 6 9] then y should be [...

1 year ago

Solved

If-then-else

Complete the function below such that if the value of x is in the range 10 to 14, inclusive, the value 18 is assigned to y. Oth...

1 year ago

Solved

Special matrix

Make a square matrix with this shape. For n=4 M = 1 1 0 0 1 0 1 0 0 1 0 ...

1 year ago

Solved

Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)

For a row vector: V=[7 1 2 -3] there is one sign change (from 2 to -3). So, the function you write must return N=1. F...

1 year ago

Solved

Calculate Amount of Cake Frosting

Given two input variables |r| and |h|, which stand for the radius and height of a cake, calculate the surface area of the cake y...

1 year 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:...

1 year ago

Question

Understanding the FFT documentation

As I understand, for a signal x, the frequency spectrum X = fft(x) is two-sided - the first half of the array is frequencies 0 t...

2 years ago | 1 answer | 0

### 1

answerQuestion

Arguments block syntax not being recognised

I'm trying to use an arguments block for input argument validation in a standalone function. I followed the instructions here, a...

2 years ago | 1 answer | 1

### 1

answerQuestion

Regionprops returning "wrong" axis lengths

I have a segmentation pipeline which produces a binary mask fitted to the outline of a cell. When I use regionprops to measure t...

2 years ago | 1 answer | 0