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Examine individual changes

This page allows you to examine the variables generated by the Edit Filter for an individual change.

Variables generated for this change

VariableValue
Whether or not the edit is marked as minor (no longer in use) (minor_edit)
false
Edit count of the user (user_editcount)
null
Name of the user account (user_name)
'188.29.164.211'
Age of the user account (user_age)
0
Groups (including implicit) the user is in (user_groups)
[ 0 => '*' ]
Rights that the user has (user_rights)
[ 0 => 'createaccount', 1 => 'read', 2 => 'edit', 3 => 'createtalk', 4 => 'writeapi', 5 => 'viewmywatchlist', 6 => 'editmywatchlist', 7 => 'viewmyprivateinfo', 8 => 'editmyprivateinfo', 9 => 'editmyoptions', 10 => 'abusefilter-view', 11 => 'abusefilter-log', 12 => 'abusefilter-log-detail', 13 => 'centralauth-merge', 14 => 'vipsscaler-test', 15 => 'ep-bereviewer' ]
Global groups that the user is in (global_user_groups)
[]
Whether or not a user is editing through the mobile interface (user_mobile)
false
Page ID (page_id)
3073134
Page namespace (page_namespace)
0
Page title without namespace (page_title)
'Orthometric height'
Full page title (page_prefixedtitle)
'Orthometric height'
Last ten users to contribute to the page (page_recent_contributors)
[ 0 => 'BillHart93', 1 => 'Fgnievinski', 2 => '208.180.241.207', 3 => '66.74.176.59', 4 => '128.32.11.112', 5 => 'Tim Zukas', 6 => 'Addbot', 7 => 'Yobot', 8 => 'EmausBot', 9 => 'Bdiscoe' ]
Action (action)
'edit'
Edit summary/reason (summary)
''
Old content model (old_content_model)
'wikitext'
New content model (new_content_model)
'wikitext'
Old page wikitext, before the edit (old_wikitext)
'{{Refimprove|date=December 2009}} The '''orthometric height''' of a point is the distance H along a plumb line from the point to a reference height.<ref>Paul R. Wolf and Charles D. Ghilani, Elementary Surveying, 11th ed. p. 581</ref><ref>Hofmann-Wellenhof and Moritz, Physical Geodesy p.47, p. 161</ref> When the reference height is a [[geoid]] model, orthometric height is for practical purposes "height above [[sea level]]". In the US, the current [[NAVD88]] datum is tied to a defined [[elevation]] at one point rather than to any location's exact mean sea level. Orthometric heights are usually used in the US for engineering work, although [[dynamic height]] may be chosen for large-scale hydrological purposes. Heights for measured points are shown on National Geodetic Survey data sheets,<ref>http://www.ngs.noaa.gov</ref> data that was gathered over many decades by precise [[spirit leveling]] over thousands of miles. Alternatives to orthometric height include [[dynamic height]] and [[normal height]], and various countries may choose to operate with those definitions instead of orthometric. They may also adopt slightly different but similar definitions for their reference surface. Since gravity is not constant over large areas the orthometric height of a level surface other than the reference surface is not constant, and orthometric heights need to be corrected for that effect. For example, gravity is 0.1% stronger in the northern United States than in the southern, so a level surface that has an orthometric height of 1000 meters in Montana will be 1001 meters high in Texas. Practical applications must use a model rather than measurements to calculate the change in gravitational potential versus depth in the earth, since the geoid is below most of the land surface (e.g., the Helmert Orthometric heights <ref>Hofmann-Wellenhof and Moritz, Physical Geodesy p. 163</ref> of [[NAVD88]]). GPS measurements give [[ECEF|earth-centered coordinates]], usually displayed as height above the [[reference ellipsoid]], which cannot be related accurately to orthometric height above the geoid without accurate gravity data for that location. In the US, NGS has undertaken the GRAV-D ten-year program to obtain such data with a goal of releasing a new definition in 2022.<ref>http://www.ngs.noaa.gov/GRAV-D/</ref> ==References== {{Reflist}} {{DEFAULTSORT:Orthometric Height}} [[Category:Surveying]] [[Category:Geodesy]] {{Physics-stub}}'
New page wikitext, after the edit (new_wikitext)
''
Unified diff of changes made by edit (edit_diff)
'@@ -1,21 +1,1 @@ -{{Refimprove|date=December 2009}} -The '''orthometric height''' of a point is the distance H along a plumb line from the point to a reference height.<ref>Paul R. Wolf and Charles D. Ghilani, Elementary Surveying, 11th ed. p. 581</ref><ref>Hofmann-Wellenhof and Moritz, Physical Geodesy p.47, p. 161</ref> When the reference height is a [[geoid]] model, orthometric height is for practical purposes "height above [[sea level]]". -In the US, the current [[NAVD88]] datum is tied to a defined [[elevation]] at one point rather than to any location's exact mean sea level. Orthometric heights are usually used in the US for engineering work, although [[dynamic height]] may be chosen for large-scale hydrological purposes. Heights for measured points are shown on National Geodetic Survey data sheets,<ref>http://www.ngs.noaa.gov</ref> data that was gathered over many decades by precise [[spirit leveling]] over thousands of miles. - -Alternatives to orthometric height include [[dynamic height]] and [[normal height]], and various countries may choose to operate with those definitions instead of orthometric. They may also adopt slightly different but similar definitions for their reference surface. - -Since gravity is not constant over large areas the orthometric height of a level surface other than the reference surface is not constant, and orthometric heights need to be corrected for that effect. For example, gravity is 0.1% stronger in the northern United States than in the southern, so a level surface that has an orthometric height of 1000 meters in Montana will be 1001 meters high in Texas. - -Practical applications must use a model rather than measurements to calculate the change in gravitational potential versus depth in the earth, since the geoid is below most of the land surface (e.g., the Helmert Orthometric heights <ref>Hofmann-Wellenhof and Moritz, Physical Geodesy p. 163</ref> of [[NAVD88]]). - -GPS measurements give [[ECEF|earth-centered coordinates]], usually displayed as height above the [[reference ellipsoid]], which cannot be related accurately to orthometric height above the geoid without accurate gravity data for that location. In the US, NGS has undertaken the GRAV-D ten-year program to obtain such data with a goal of releasing a new definition in 2022.<ref>http://www.ngs.noaa.gov/GRAV-D/</ref> - -==References== -{{Reflist}} - -{{DEFAULTSORT:Orthometric Height}} -[[Category:Surveying]] -[[Category:Geodesy]] - -{{Physics-stub}} '
New page size (new_size)
0
Old page size (old_size)
2460
Size change in edit (edit_delta)
-2460
Lines added in edit (added_lines)
[]
Lines removed in edit (removed_lines)
[ 0 => '{{Refimprove|date=December 2009}}', 1 => 'The '''orthometric height''' of a point is the distance H along a plumb line from the point to a reference height.<ref>Paul R. Wolf and Charles D. Ghilani, Elementary Surveying, 11th ed. p. 581</ref><ref>Hofmann-Wellenhof and Moritz, Physical Geodesy p.47, p. 161</ref> When the reference height is a [[geoid]] model, orthometric height is for practical purposes "height above [[sea level]]".', 2 => 'In the US, the current [[NAVD88]] datum is tied to a defined [[elevation]] at one point rather than to any location's exact mean sea level. Orthometric heights are usually used in the US for engineering work, although [[dynamic height]] may be chosen for large-scale hydrological purposes. Heights for measured points are shown on National Geodetic Survey data sheets,<ref>http://www.ngs.noaa.gov</ref> data that was gathered over many decades by precise [[spirit leveling]] over thousands of miles. ', 3 => false, 4 => 'Alternatives to orthometric height include [[dynamic height]] and [[normal height]], and various countries may choose to operate with those definitions instead of orthometric. They may also adopt slightly different but similar definitions for their reference surface.', 5 => false, 6 => 'Since gravity is not constant over large areas the orthometric height of a level surface other than the reference surface is not constant, and orthometric heights need to be corrected for that effect. For example, gravity is 0.1% stronger in the northern United States than in the southern, so a level surface that has an orthometric height of 1000 meters in Montana will be 1001 meters high in Texas.', 7 => false, 8 => 'Practical applications must use a model rather than measurements to calculate the change in gravitational potential versus depth in the earth, since the geoid is below most of the land surface (e.g., the Helmert Orthometric heights <ref>Hofmann-Wellenhof and Moritz, Physical Geodesy p. 163</ref> of [[NAVD88]]).', 9 => false, 10 => 'GPS measurements give [[ECEF|earth-centered coordinates]], usually displayed as height above the [[reference ellipsoid]], which cannot be related accurately to orthometric height above the geoid without accurate gravity data for that location. In the US, NGS has undertaken the GRAV-D ten-year program to obtain such data with a goal of releasing a new definition in 2022.<ref>http://www.ngs.noaa.gov/GRAV-D/</ref>', 11 => false, 12 => '==References==', 13 => '{{Reflist}}', 14 => false, 15 => '{{DEFAULTSORT:Orthometric Height}}', 16 => '[[Category:Surveying]]', 17 => '[[Category:Geodesy]]', 18 => false, 19 => '{{Physics-stub}}' ]
Whether or not the change was made through a Tor exit node (tor_exit_node)
0
Unix timestamp of change (timestamp)
1523003604