Rare Commodities

Revision as of 08:33, 20 February 2015

Rare goods increase in value the further you travel from their point of purchase.

— In-Game Description

Rare goods can be found throughout the galaxy and increase in price based upon how far away from the originating system the goods are with a maximum price beginning to plateau around the 160-170 LY range.

The price increase can be best approximated by the following function, illustrated in the graphs below. Note that the variables p0, p1, p2, and p3 differ for various commodities, see the thread for details.^[1]

SP(x) = p0 + p1 * erf((x - p2) / p3)

Note that if your environment does not have an erf() function for you to use, you can use a trigonometric function instead at the cost of a bit more error - but the result should still be useful:^[2]

SP(x) = p0 + p1 * tan⁻¹((x - p2) / p3)

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[1] Distance Behavior of Rare Commodities (The Quest of the Lavian Brandy) by p2k

[2] Distance Behavior of Rare Commodities (The Quest of the Lavian Brandy) by p2k (post #34)

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[2]

@@ Line 1: / Line 1: @@
 {{quote|Rare goods increase in value the further you travel from their point of purchase.|In-Game Description}}
-Rare goods can be found throughout the galaxy and increase in price based upon how far away from the originating system the goods are.
+Rare goods can be found throughout the galaxy and increase in price based upon how far away from the originating system the goods are with a maximum price beginning to plateau around the 160-170 LY range.
 The price increase can be best approximated by the following function, illustrated in the graphs below. Note that the variables p0, p1, p2, and p3 differ for various commodities, see the [https://forums.frontier.co.uk/showthread.php?t=66538&page=3&p=1180390&viewfull=1#post1180390 thread] for details.<ref>[https://forums.frontier.co.uk/showthread.php?t=66538 Distance Behavior of Rare Commodities (The Quest of the Lavian Brandy) by p2k]</ref>
 <code>SP(x) = p0 + p1 * [http://mathworld.wolfram.com/Erf.html erf]((x - p2) / p3)</code>