[R-pkgs] new package: ResistorArray
r.hankin at soc.soton.ac.uk
Thu Mar 3 10:31:16 CET 2005
Announcing the release of a new R package ResistorArray.
This package solves the (nontrivial) general problem of resistance on
Outside electrical engineering, the problem has a wide range of
situations such as groundwater modelling; there is a direct
between electrical networks and random walks.
The package has a reasonably complete set of literature references, and
solves a number
of classical problems such as the resistance between opposite points of
a skeleton resistor
cube, and the Wheatstone bridge.
The package comes with a variety of standard resistor arrays, including
all five platonic
solids, the Fibonacci ladder, and "N" arbitrary resistors in series.
The package gives nice numerical illustrations of a few theoretical
results from the
recent (2004) literature.
One of the Google aptitude tests was to determine the electrical
resistance between two points
on an infinite grid of resistors. I couldn't solve this problem
analytically (although I found the
other day that a solution does exist); ResistorArray gets the answer
correct to within about 1%.
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