Barometer - Revision history

Fluclo Bastet: /* Use */

2010-05-20T22:56:56Z

Use

2010-05-20T22:56:21Z

Requirements

2010-01-04T17:01:44Z

Quality vs E

2010-01-02T12:35:28Z

Source

2010-01-02T12:30:38Z

Source

2010-01-02T12:30:19Z

Source

2009-05-17T06:07:51Z

Accuracy

2009-05-17T05:40:43Z

Quality vs E

2009-05-17T05:38:33Z

Determining E

2009-05-16T14:14:50Z

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 When carried, a new menu option becomes available under Special > Measure Altitude. This immediately reports the altitude of your current location in Main, in feet and inches.
-Typical altitudes are 0 (sea level) - 300 feet (top of a tall 'mountain')
+Typical altitudes are 0 (sea level) - 600 feet (top of a tall 'mountain')
 ==Accuracy==

@@ Line 15: / Line 15: @@
 ==Requirements==
-This item becomes available once you have begun the [[requires::Test of Life]].
+Original Shard: This item becomes available once you have begun the [[Test of Life]].
 ==Use==

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 |-
 | 1940 || 41' 10" (502 inches) || 33' 0" (396 inches) || 53 || T4 verified
 |}

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 Final quality of a Barometer can be determined by doing the following formulas: Average = (A + B + C) / 3.<br>
-Final quality = Floor(Average - ABS(Average - A) - ABS(Average - B) - ABS(Average - C))
+Final quality = Floor(Average - ABS(Average - A) - ABS(Average - B) - ABS(Average - C))<br>
 I've verified the formula on 18 barometers. ~McArine

@@ Line 7: / Line 7: @@
 Barometers, like other crafted tools, have a quality associated with them. A higher quality barometer is more accurate.
-Final quality of a Barometer can be determined by doing the following formulas: Average = (A + B + C) / 3.
+Final quality of a Barometer can be determined by doing the following formulas: Average = (A + B + C) / 3.<br>
 Final quality = Floor(Average - ABS(Average - A) - ABS(Average - B) - ABS(Average - C))

← Older revision		Revision as of 12:30, 2 January 2010
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	Barometers, like other crafted tools, have a quality associated with them. A higher quality barometer is more accurate.		Barometers, like other crafted tools, have a quality associated with them. A higher quality barometer is more accurate.
		+
		+	Final quality of a Barometer can be determined by doing the following formulas: Average = (A + B + C) / 3.
		+	Final quality = Floor(Average - ABS(Average - A) - ABS(Average - B) - ABS(Average - C))
		+
		+	I've verified the formula on 18 barometers. ~McArine

	==Requirements==		==Requirements==

← Older revision		Revision as of 06:07, 17 May 2009
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	==Accuracy==		==Accuracy==
		+
		+	[[Image:Q1940Barometer.png\|thumb\|300px\|Data for a quality 1940 barometer]]
		+
	As in previous tales, barometers appear to report an altitude that varies according to the in-game time of day and the quality of the barometer.		As in previous tales, barometers appear to report an altitude that varies according to the in-game time of day and the quality of the barometer.

@@ Line 41: / Line 41: @@
 {| border="1" cellspacing="0" cellpadding="5"
-! Quality !! E (inches) !! Notes
+! Quality !! 6AM reading !! 6PM reading !! E (inches) !! Notes
 |-
-| 1 || 60 || from the T2 wiki
+| 1 || ? || ? || 60 || from the T2 wiki
 |-
-| 1940 || 53 || T4 verified
+| 1940 || 41' 10" (502 inches) || 33' 0" (396 inches) || 53 || T4 verified
 |}

← Older revision		Revision as of 05:38, 17 May 2009
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	It's best to use a flat area with an obvious marker to stand at, so that you can be sure you're measuring at the same spot each time.		It's best to use a flat area with an obvious marker to stand at, so that you can be sure you're measuring at the same spot each time.
		+
		+	Make sure your test spot is at least 10 feet above sea level, you don't want either reading to be 0.

	===Quality vs E===		===Quality vs E===

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    reported altitude = true altitude + E * sin(2*pi*t)
-E is the maximum error of the barometer, which depends in some (currently unknown) way on the barometer's quality. E is lower for higher quality barometers. In previous tales, E was about 60 inches (5 feet) for a quality 1 barometer.
+E is the maximum error of the barometer, which depends in some (currently unknown) way on the barometer's quality. E is smaller for higher quality barometers.
 All barometers are perfectly accurate at 12AM and 12PM gametime (sin(0) = sin(pi) = 0), and are most inaccurate at 6AM (too high by E inches) and 6PM (too low by E inches).
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 It's best to use a flat area with an obvious marker to stand at, so that you can be sure you're measuring at the same spot each time.
 {{RequiredBy}}