Some item stats information

research/item_stats.md

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+Most of these are kind of obvious, but will add here for safe keeping!
+
+# Attack speed
+
+Equation: `(attack speed / 1000 `
+
+# Auto Attack
+
+Equation: `(damage / 3 * attack speed)`
+
+Remember to use HQ damage when determining Auto-Attack for HQ items.
+
+# DPS
+
+Equation: `(damage / 3)`
+
+# Finding HQ values
+
+HQ values are just the difference, the "additional number", if an item is Accuracy: 32, and HQ Accuracy: 35, the HQ value is listed as 3.
+
+An example can be found at offsets: [34, 50, 75 = value, param, hq](https://github.com/viion/XIV-Datamining/blob/master/offsets/Items/items_csv_xivdb_unverified.txt#L15-L17)
+
+# Overall Item Level
+
+This one is really for gearset applications. 
+
+Item level is `*2` when involving two handed weapons, this is to compensate for off hand. You can test this by equipping only a Sword in game, then equip your Shield of the same item level and record the two values. Then equip a two handed weapon, your character will be the same overal item level as a Sword+Shield.
+
+# Category to Slot ID
+```
+// slot id => cat id
+[
+    // main hand
+    738 => [
+        1,2,3,4,5,6,7,8,9,10,84,87,88,89,
+        12,14,16,18,20,22,24,26,28,30,32,
+    ],
+
+    // off hand
+    739 => [
+        13,15,17,10,21,23,25,27,29,31,11
+    ],
+
+    // head, body, hands, waist, legs, feet, ears, neck, wrists, ring
+    740 => [34],
+    741 => [35],
+    742 => [37],
+    743 => [39],
+    744 => [36],
+    745 => [38],
+    746 => [41],
+    747 => [40],
+    748 => [42],
+    748 => [43],
+];
+```