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Project Euler 12: Highly Divisible Triangular Number
Solutions to Project Euler 12: Highly Divisible Triangular Number. What is the value of the first triangle number to have over five hundred divisors?
Percentile Calculations in Water Quality Regulations
Demonstrating the various ways percentile calculations can be undertaken in R, specifically concerning measuring water supply turbidity.
Project Euler 11: Largest product in a grid
Solutions to Project Euler 11: Greatest product of four adjacent numbers in the same direction (up, down left, right) in a 20×20 grid?
Project Euler 10: Summation of Primes
Solutions to Project Euler 10 in the R language. Find the sum of all primes below two million, using the Sieve of Erarosthenes.
Spike Detection in Water Treatment Data in the R Language
This article explains how to implement spike detection for time series data using the runlength function in the R language.
Project Euler 9: Special Pythagorean Triplet
Solutions to Project Euler 9: Find the Pythagorean triplet where a^2 + b^2 = c^2 and a + b + c = 1000.
Trumpworld Analysis: Ownership Relations in his Business Network
Trumpworld analysis of ownership relationships between businesses in trumpland - the web of connections in the world of Donald J. Trump.
Mapping antipodes using the ggmap package
The antipode of any place on Earth is the point on the Earth's surface that is diametrically opposite to it. How can you use ggmap for mapping antipodes?