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__NOTOC__{{DISPLAYTITLE:explain xkcd}} | __NOTOC__{{DISPLAYTITLE:explain xkcd}} | ||
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<font size=5px>''Welcome to the '''explain [[xkcd]]''' wiki!''</font><br> | <font size=5px>''Welcome to the '''explain [[xkcd]]''' wiki!''</font><br> | ||
| − | We have an explanation for all [[:Category: | + | We have an explanation for all [[:Category:All comics|'''{{#expr:{{PAGESINCAT:All comics|R}}-1}}''' xkcd comics]], |
| − | <!-- Note: the - | + | <!-- Note: the -1 in the calculation above is to discount "comic" 404, |
| − | + | which is not really a comic, even though we've categorised it so. --> | |
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and only {{PAGESINCAT:Incomplete explanations|R}} | and only {{PAGESINCAT:Incomplete explanations|R}} | ||
({{#expr: {{PAGESINCAT:Incomplete explanations|R}} / {{LATESTCOMIC}} * 100 round 0}}%) [[:Category:Incomplete explanations|are incomplete]]. Help us finish them! | ({{#expr: {{PAGESINCAT:Incomplete explanations|R}} / {{LATESTCOMIC}} * 100 round 0}}%) [[:Category:Incomplete explanations|are incomplete]]. Help us finish them! | ||
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<span style="float:right;">[[{{LATESTCOMIC}}|'''Go to this comic explanation''']]</span> | <span style="float:right;">[[{{LATESTCOMIC}}|'''Go to this comic explanation''']]</span> | ||
<br clear="right"> | <br clear="right"> | ||
| − | {{:{{LATESTCOMIC}} | + | {{:{{LATESTCOMIC}}}}</div> |
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| − | }}</div> | ||
<small>''Is this out of date? {{Purge|Clicking here will fix that}}.''</small> | <small>''Is this out of date? {{Purge|Clicking here will fix that}}.''</small> | ||
== New here? == | == New here? == | ||
| − | <div style="float:right; margin: 0 0 1em 1em">{{Special:ContributionScores/10/7/nosort,notools}}<div style="font-size:0.85em; width:25em; font-style:italic">[[Special:ContributionScores|Lots of people]] contribute to make this wiki a success. Many of the recent contributors, listed above, have just joined. You can do it too! Create your account [[Special:UserLogin/signup|here]].</div></div> | + | <div style="float:right; margin: 0 0 1em 1em">{{Special:ContributionScores/10/7/nosort,notools}}<div style="font-size:0.85em; width:25em; font-style:italic">[[Special:ContributionScores|Lots of people]] contribute to make this wiki a success. Many of the recent contributors, listed above, have [http://www.explainxkcd.com/wiki/index.php?title=Special%3AContributions&contribs=newbie just joined]. You can do it too! Create your account [[Special:UserLogin/signup|here]].</div></div> |
| − | You can read a brief introduction about this wiki at [[explain xkcd]]. Feel free to sign up for an account and contribute to the wiki! We need explanations for comics, characters, themes | + | You can read a brief introduction about this wiki at [[explain xkcd]]. Feel free to [[Special:UserLogin/signup|sign up for an account]] and contribute to the wiki! We need explanations for [[:Category:Incomplete explanations|comics]], [[:Category:Characters|characters]], [[:Category:Comics by topic|themes]] and [[:Category:Meta|everything in between]]. If it is referenced in an [[xkcd]] web comic, it should be here. |
| − | *If you're new to | + | * If you're new to wiki editing, see the [[explain xkcd:Editor FAQ]] for a specific guidance to this Wiki and the more general help on [[mw:Help:Editing pages|how to edit wiki pages]]. There's also a handy {{w|Help:Cheatsheet|wikicode cheatsheet}}. |
| − | *Discussion about | + | * Discussion about the wiki itself happens at the [[explain xkcd:Community portal|Community portal]]. |
| − | *[[List of all comics]] | + | * You can browse the comics from [[List of all comics]] or by navigating the category tree at [[:Category:Comics]]. |
| − | * | + | * There are incomplete explanations listed [[:Category:Incomplete explanations|here]]. Feel free to help out by expanding them! |
== Rules == | == Rules == | ||
| − | Don't be a jerk. There are a lot of comics that don't have set in stone explanations; feel free to put multiple interpretations in the wiki page for each comic. | + | |
| + | Don't be a jerk. | ||
| + | |||
| + | There are a lot of comics that don't have set-in-stone explanations; feel free to put multiple interpretations in the wiki page for each comic. | ||
If you want to talk about a specific comic, use its discussion page. | If you want to talk about a specific comic, use its discussion page. | ||
| − | Please only submit material directly related to | + | Please only submit material directly related to (and helping everyone better understand) xkcd... and of course ''only'' submit material that can legally be posted (and freely edited). Off-topic or other inappropriate content is subject to removal or modification at admin discretion, and users who repeatedly post such content will be blocked. |
If you need assistance from an [[explain xkcd:Administrators|admin]], post a message to the [[explain xkcd:Community portal/Admin requests|Admin requests]] board. | If you need assistance from an [[explain xkcd:Administrators|admin]], post a message to the [[explain xkcd:Community portal/Admin requests|Admin requests]] board. | ||
[[Category:Root category]] | [[Category:Root category]] | ||
Revision as of 05:04, 4 May 2022
Welcome to the explain xkcd wiki!
We have an explanation for all 2920 xkcd comics,
and only 5
(0%) are incomplete. Help us finish them!
Latest comic
| Survey Marker |
 Title text: Fun fact: The standard North American NAD83 coordinate system is misaligned from the actual Earth, off-center by about 7 feet. Someone knows where I am, and I'm in the wrong place. |
Explanation
|
This explanation may be incomplete or incorrect: Created by a GUIDED MISSILE THAT MISSED THE TARGET DUE TO COORDINATE DRIFT - Please change this comment when editing this page. Do NOT delete this tag too soon. |
Cueball and Megan have found a survey marker on the ground. Survey markers such as these are used to define the NAD 83 and NAVD 88 systems, and the National Geodetic Survey has a database storing the coordinates of these markers. Those two systems however are being replaced by the New Datums of 2022 (delayed to 2024-2025), and is primarily based off of satellite systems and gravimetric models.
When they update the database, in the comic Cueball's position changes to compensate. In reality updating a database to change the coordinates of a location would not physically move the location.
The title text refers to NAD 83 being around 7 feet off. This is in reference to both WGS84 and presumably the New Datum.
Transcript
|
|
This transcript is incomplete. Please help editing it! Thanks. |
- [Zoomed in view of a marker on the floor]
- U.S. Geological survey bench mark
- Elevation above sea 447 feet
- Cueball [standing on the marker]:
- I love finding these survey markers. It's somehow reassuring.
- I like that someone, somewhere, knows where this spot is.
- If I stand on it, they know where I am.
- Megan: But the NAD83 and NAVD88 datums are getting replaced soon. That marker's coordinates could shift by like 5 feet.
- Megan [looking at her phone]: Oh look, it just got updated.
- Cueball [floating and waving his arms at the top right of the panel]: Hey! Put me back!
Is this out of date? .
New here?
Last 7 days (Top 10) |
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Lots of people contribute to make this wiki a success. Many of the recent contributors, listed above, have just joined. You can do it too! Create your account here.
You can read a brief introduction about this wiki at explain xkcd. Feel free to sign up for an account and contribute to the wiki! We need explanations for comics, characters, themes and everything in between. If it is referenced in an xkcd web comic, it should be here.
- If you're new to wiki editing, see the explain xkcd:Editor FAQ for a specific guidance to this Wiki and the more general help on how to edit wiki pages. There's also a handy wikicode cheatsheet.
- Discussion about the wiki itself happens at the Community portal.
- You can browse the comics from List of all comics or by navigating the category tree at Category:Comics.
- There are incomplete explanations listed here. Feel free to help out by expanding them!
Rules
Don't be a jerk.
There are a lot of comics that don't have set-in-stone explanations; feel free to put multiple interpretations in the wiki page for each comic.
If you want to talk about a specific comic, use its discussion page.
Please only submit material directly related to (and helping everyone better understand) xkcd... and of course only submit material that can legally be posted (and freely edited). Off-topic or other inappropriate content is subject to removal or modification at admin discretion, and users who repeatedly post such content will be blocked.
If you need assistance from an admin, post a message to the Admin requests board.
