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Andrew Newell


Last seen: 2 days ago
1,765 total contributions since 2011

A geophysicist who uses MATLAB for most of his modeling.
Professional Interests: geophysics

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Solved


List the emirps

1 day ago

Solved


Lambert's W
Matlab cody does not support lambertw. Try to create a lambert's w function yourself. Lambert's W is the function that solves...

2 days ago

Solved


First use of arrayfun() and anonymous function @(x)
Create an anonymous function using @(x) for a parabola equation for the given coefficients stored in s with s(1)x2 + s(2)x +...

16 days ago

Solved


The End of the World
given a date -- represent it in the Maya long count system. <https://en.wikipedia.org/wiki/Maya_calendar> <https://maya.nm...

16 days ago

Solved


Lost days
Given two dates in a particular format, calculate the difference between them.

16 days ago

Solved


Leap Year
According to Gregorian Calender(which is in use now, in many countries),decide whether a given year is a leap year or not. Give...

16 days ago

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leap year
find the number of leap years within the given time interval

16 days ago

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Friday or not
I love Friday. Please tell me whether the day is Friday. Dateformat is 'yyyy-mm-dd' or 'dd-mmm-yyyy' or 'mm/dd/yyyy'. Exa...

16 days ago

Solved


Datetime basics
Generate the datetime scalar representing the current date

16 days ago

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Find the day for a date
Today's day and date will be given to you. By utilising that you need to find the day of the old date. (Date will be in DD/MM/YY...

16 days ago

Solved


Friday the 13th
According to superstition, lots of unpleasant stuff happens on Friday the 13th, so you might like to find the next occurence of ...

16 days ago

Solved


Day counter function
Write a function called _day_counter_ that returns the number of Mondays that fell on the first day of the month in a given year...

16 days ago

Solved


Count the days
Count the occurrence of a particular day (e.g. Monday) in a given year.

16 days ago

Solved


How long until the weekend?
Write a function a that takes a date vector as an input and returns the number of hours until the weekend begins. The beginning...

16 days ago

Solved


Days until next NewYear ball drop
Given a date string in the form 'yyyy-mm-dd' or 'yyyy-mm-dd hh:mm:ss', calculate the number of *days* until the dropping of the ...

16 days ago

Answered
How do I generate a random number with beta distribution?
You can use the function betarnd, but you'll need to do some normalizing to get it in the standard form used by MATLAB (see Beta...

18 days ago | 0

| accepted

Answered
Newton Raphson - saving all values and using last iteration value as initial for next
Sorry, I just realized that you wanted to save the iterations. Here's how: x = -0.001*ones(6,length(A1)); for i=1:5 x(i+1...

18 days ago | 0

| accepted

Answered
Newton Raphson - saving all values and using last iteration value as initial for next
O.k. So here is how you do it: x = -0.001*ones(size(A1)); for i=1:5 x = x - f(x)./fd(x); end

18 days ago | 0

Solved


Combinations without using nchoosek
You have to generate a matrix with all possible combinations of n elements *taken 2* at a time, *without using nchoosek(1:n,2)* ...

20 days ago

Solved


Find the Pattern 3

21 days ago

Solved


Find the Pattern 2

21 days ago

Solved


Find the Pattern 1

21 days ago

Solved


Rotate Matrix @180 degree
Rotate Matrix @180 degree Example A=[8 1 6; 3 5 7; 4 9 2], then answer would be [2 9 4;...

21 days ago

Solved


Converts numbers into characters
Converts numbers into characters

21 days ago

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Find the max element of the array
Find the max element of the array

21 days ago

Solved


Calculate the average value of the elements in the array
Calculate the average value of the elements in the array

21 days ago

Solved


to the 2 all elements
to the 2 all elements

21 days ago

Solved


the average value of the elements
Calculate the average value of the elements in the array

21 days ago

Solved


Double all elements in the array
Duplicate all elements in the array

21 days ago

Solved


calculate the length of matrix
input 1 array, calculate the length

21 days ago

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