October 4, 2012: Clarified skill coefficient for Elixir Gun 3, Fumigate. Updated introduction, format, and link. Added skill links. Updated GW2 Wiki’s skill coefficients.
September 14, 2013: Clarified skill coefficient for Pistol 4, Blowtorch.
January 21, 2013: Updated Skill coefficient for Grenade Kit.
Long ago I’ve decided to work on finding the skill coefficients the Engineer weapons and kits. The motivation came from Casia.4281 who was first to publish her findings on the skill coefficients on the GW2 Engineer forums. I figured I can contribute to the entire GW2 community by finding these skill coefficients not only for Engineers, but for all professions. So, there begins my project.
The method at which I found the skill coefficients were based on the damage formula: D=k*W*P/a where k is the skill coefficient, W is the average weapon damage, P is power, and a is the armor. Tooltips calculate damage assuming the target’s armor is 2600. To avoid confusion with weapon damage (whether or not to use the lower, average, and upper weapon damage are not equal), I used Steady weapons (where lower, average, and upper weapon damage are equal). Though, math shows that tooltips uses the average weapon damage.
With the formula, I can vary how much power I have using amulets (Naked, Rampager, Barbarian, and Berserker), and record the damage on the tool tips. I calculated the k-value for each power-damage relationship for each skill using Excel, averaged them, and used the standard deviation (typically <0.004) to determine accuracy. I, then, chose the final k-value and compared it to the averaged k-value by finding the magnitude of the difference (which typically ends up under 0.0002).
|P2||0.400||Poison Dart Volley (per hit, 5 hits)|
|P3||0.400||Static Shot (per hit, 4 hits)|
|Jump Shot (Leap)
Jump Shot (Land)
After confirming with Casia.4281 on the average weapon damage of 920 for Engineer kits, and some damage-power value gathering, calculating skill coefficients and cross checking it with his/her’s.
|BK2||0.200||Fire Bomb (per hit, 4 hits)|
|BKTB||1.700||Big Ol’ Bomb|
|EG2||0.750||Elixir F (per hit, 4 hits)|
|EG3||0.080||Fumigate (per hit, 5 hits)|
|FT1||0.150||Flame Jet (per hit, 10 hits)|
Detonate Flame Blast
|GK1||0.330||Grenade (per hit)|
|GK2||0.550||Shrapnel Grenade (per hit)|
|GK3||0.100||Flash Grenade (per hit)|
|GK4||0.500||Freeze Grenade (per hit)|
|GK5||0.200||Poison Grenade (per hit)|
|GKTB||0.375||Grenade Barrage (per hit)|
|TK2||0.000||Box of Nails|
Thread: https://forum-en.guildwars2.com/forum/professions/engineer/Engineer-skill-coeffsSpreadhseet: https://docs.google.com/spreadsheet/ccc?key=0Aj4MGDyyA4tbdG5HcXBsZHBWLXZjN1Q0RVB4dEdhaVEI hope this was helpful for everyone!