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Dennis


Active since 2013

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Significance of correlation in large datasets
Hey everyone, I have a dataset consisting of more than N=160k samples and would like to quantify the correlation of two varia...

7 years ago | 0 answers | 0

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answers

Question


How to fit moving shape to position observations and face normals
Hi there, suppose I observe a 'front' of some sort and of circular shape passing through three positions. I know the exact lo...

7 years ago | 0 answers | 0

0

answers

Answered
How would you try to model a system with the presented step response?
Thank you, and I do, input is a step function of amplitude 3.5, approximately. However, there must be rules on how to choose app...

8 years ago | 0

Question


How would you try to model a system with the presented step response?
Dear all, I am a beginner in System Analysis and would like to be advised on transfer function design. <</matlabcentral/an...

8 years ago | 2 answers | 0

2

answers

Answered
1-hour offset in time string conversion
I have not thought about this, stupid me... Anyways, the easiest fix for me will then be to simply omit the 'Z' from the format ...

9 years ago | 0

Question


1-hour offset in time string conversion
Hi there, I'm having trouble in converting string to datenum values. Somehow, there will be an offset of one hour when converti...

9 years ago | 2 answers | 0

2

answers

Answered
Fitting Low-Curvature Volume to Scattered Data
Thank you for your response! So later, the real data will indeed be noisy and might contain outliers. Still, I want to fit a vo...

10 years ago | 0

Question


Fitting Low-Curvature Volume to Scattered Data
Hi there, I am trying to figure out a way to form something like a low-curvature volume fit in spherical coordinates. So, I ...

10 years ago | 2 answers | 0

2

answers

Solved


Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

10 years ago

Question


How to define an envelope tube?
Hi everybody, I would appreciate ideas of how one could possibly define some sort of envelope tube. I already tried something o...

11 years ago | 1 answer | 0

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answer

Solved


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...

11 years ago

Solved


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...

11 years 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. Example...

11 years ago

Solved


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 ...

11 years ago

Solved


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...

11 years ago

Solved


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

11 years 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...

11 years 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 ...

11 years ago

Solved


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 ...

11 years ago

Solved


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

11 years 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...

11 years ago

Solved


Is my wife right?
Regardless of input, output the string 'yes'.

11 years 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:...

11 years ago