Littrow projection - Revision history

Dissident: /* External links */

2024-09-01T00:18:50Z

External links

← Previous revision		Revision as of 00:18, 1 September 2024
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	{{Map projections}}		{{Map projections}}

	[[Category:Map projections]]
	[[Category:Conformal projections]]		[[Category:Conformal projections]]

Euro2023: {{Map projections}}

2023-01-10T17:31:44Z

← Previous revision		Revision as of 17:31, 10 January 2023
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	*[https://web.archive.org/web/20190714122810/http://www.csiss.org/map-projections/Azimuthal/Littrow.pdf Littrow map]		*[https://web.archive.org/web/20190714122810/http://www.csiss.org/map-projections/Azimuthal/Littrow.pdf Littrow map]

	{{Map ~~Projections~~}}		{{Map projections}}

	[[Category:Map projections]]		[[Category:Map projections]]

181.171.20.157: External links were broken and the URL changed , replaced the webpage with its new direction at csiss2.ncgia.ucsb.edu and the pdf with a web.archive links of the last (2019) snapshot, which must be available virtually for-ever.

2022-07-14T13:38:49Z

External links were broken and the URL changed , replaced the webpage with its new direction at csiss2.ncgia.ucsb.edu and the pdf with a web.archive links of the last (2019) snapshot, which must be available virtually for-ever.

← Previous revision		Revision as of 13:38, 14 July 2022
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	==External links==		==External links==
	*[http://~~www~~.~~csiss~~.~~org~~/map-projections/Azimuthal.html A Gallery of Map Projections - Azimuthals & Related]		*[http://csiss2.ncgia.ucsb.edu/map-projections/Azimuthal.html A Gallery of Map Projections - Azimuthals & Related]
	*[http://www.csiss.org/map-projections/Azimuthal/Littrow.pdf Littrow map]		*[https://web.archive.org/web/20190714122810/http://www.csiss.org/map-projections/Azimuthal/Littrow.pdf Littrow map]

	{{Map Projections}}		{{Map Projections}}

Goszei: Adding short description: "Retroazimuthal conformal map projection" (Shortdesc helper)

2021-06-03T18:29:17Z

Adding short description: "Retroazimuthal conformal map projection" (Shortdesc helper)

← Previous revision		Revision as of 18:29, 3 June 2021
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			{{Short description\|Retroazimuthal conformal map projection}}
	[[File:Littrow projection SW.JPG\|300px\|thumb\|Littrow projection of partial hemisphere]]		[[File:Littrow projection SW.JPG\|300px\|thumb\|Littrow projection of partial hemisphere]]
	The '''Littrow projection''' is a [[map projection]] developed by [[Joseph Johann von Littrow]] in 1833. It is the only [[Map projection#Conformal\|conformal]], [[Map projection#Retroazimuthal\|retroazimuthal]] map projection. As a retroazimuthal projection, the Littrow shows directions, or azimuths, correctly from any point to the center of the map.		The '''Littrow projection''' is a [[map projection]] developed by [[Joseph Johann von Littrow]] in 1833. It is the only [[Map projection#Conformal\|conformal]], [[Map projection#Retroazimuthal\|retroazimuthal]] map projection. As a retroazimuthal projection, the Littrow shows directions, or azimuths, correctly from any point to the center of the map.

BrownHairedGirl: remove links to deleted portals

2019-07-13T15:55:37Z

remove links to deleted portals

← Previous revision		Revision as of 15:55, 13 July 2019
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	==See also==		==See also==

	{{Portal\|Atlas}}
	* [[List of map projections]]		* [[List of map projections]]

StewartIM: Website link is dead and Java applets have been deprecated across most browsers

2019-01-28T04:10:37Z

Website link is dead and Java applets have been deprecated across most browsers

← Previous revision		Revision as of 04:10, 28 January 2019
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	*[http://www.csiss.org/map-projections/Azimuthal.html A Gallery of Map Projections - Azimuthals & Related]		*[http://www.csiss.org/map-projections/Azimuthal.html A Gallery of Map Projections - Azimuthals & Related]
	*[http://www.csiss.org/map-projections/Azimuthal/Littrow.pdf Littrow map]		*[http://www.csiss.org/map-projections/Azimuthal/Littrow.pdf Littrow map]
	*[http://www.uff.br/mapprojections/Littrow_en.html An interactive Java Applet to study the metric deformations of the Littrow Projection].

	{{Map Projections}}		{{Map Projections}}

67.243.146.200 at 06:48, 29 March 2018

2018-03-29T06:48:58Z

← Previous revision		Revision as of 06:48, 29 March 2018
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	\| series = Professional Paper 1453		\| series = Professional Paper 1453
	\| isbn = 978-0160033681		\| isbn = 978-0160033681
	\| pages = ~~221~~		\| pages = 231
	\| url = https://pubs.er.usgs.gov/usgspubs/pp/pp1453		\| url = https://pubs.er.usgs.gov/usgspubs/pp/pp1453
	\| accessdate = 2014-09-27		\| accessdate = 2014-09-27

67.243.146.200 at 06:47, 29 March 2018

2018-03-29T06:47:10Z

← Previous revision		Revision as of 06:47, 29 March 2018
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	<ref name="Snyder89">{{cite book		<ref name="Snyder89">{{cite book
	\| title = An Album of Map Projections		\| title = An Album of Map Projections
	\| ~~last~~ = Snyder		\| last1 = Snyder
	\| ~~first~~ = John P.		\| first1 = John P.
	\| ~~authorlink~~ = John P. Snyder		\| authorlink1 = John P. Snyder
			\| last2 = Voxland
			\| first2 = Philip M.
			\| authorlink2 = Philip M. Voxland
	\| year = 1989		\| year = 1989
	\| publisher = [[United States Geological Survey\|USGS]]		\| publisher = [[United States Geological Survey\|USGS]]
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	\| series = Professional Paper 1453		\| series = Professional Paper 1453
	\| isbn = 978-0160033681		\| isbn = 978-0160033681
	\| ~~page~~ = ~~231~~		\| pages = 221
	\| url = https://pubs.er.usgs.gov/usgspubs/pp/pp1453		\| url = https://pubs.er.usgs.gov/usgspubs/pp/pp1453
	\| accessdate = 2014-09-27		\| accessdate = 2014-09-27

Strebe: Undid revision 829035742 by 210.165.149.211 (talk)

2018-03-06T07:50:42Z

Undid revision 829035742 by 210.165.149.211 (talk)

← Previous revision		Revision as of 07:50, 6 March 2018
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	The '''Littrow projection''' is a [[map projection]] developed by [[Joseph Johann von Littrow]] in 1833. It is the only [[Map projection#Conformal\|conformal]], [[Map projection#Retroazimuthal\|retroazimuthal]] map projection. As a retroazimuthal projection, the Littrow shows directions, or azimuths, correctly from any point to the center of the map.		The '''Littrow projection''' is a [[map projection]] developed by [[Joseph Johann von Littrow]] in 1833. It is the only [[Map projection#Conformal\|conformal]], [[Map projection#Retroazimuthal\|retroazimuthal]] map projection. As a retroazimuthal projection, the Littrow shows directions, or azimuths, correctly from any point to the center of the map.

	Patrick Weir of the [[British Merchant Navy]] independently reinvented the projection in 1890, after which it began to see more frequent use as recognition of its retroazimuthal property spread. Maps based on the Littrow projection are sometimes referred to as '''Weir Azimuth diagrams'''.</ref name="Snyder93">		Patrick Weir of the [[British Merchant Navy]] independently reinvented the projection in 1890, after which it began to see more frequent use as recognition of its retroazimuthal property spread. Maps based on the Littrow projection are sometimes referred to as '''Weir Azimuth diagrams'''.<ref name="Snyder93"/>

	The projection transforms from latitude ''φ'' and longitude ''λ'' to map coordinates ''x'' and ''y'' via the following equations:</ref name="Snyder89">		The projection transforms from latitude ''φ'' and longitude ''λ'' to map coordinates ''x'' and ''y'' via the following equations:<ref name="Snyder89"/>
	:<math>\begin{align} x &= R \frac {\sin \left(\lambda - \lambda_0\right)}{\cos \varphi} \\		:<math>\begin{align} x &= R \frac {\sin \left(\lambda - \lambda_0\right)}{\cos \varphi} \\
	y &= R \cos \left(\lambda - \lambda_0\right) \tan \varphi \end{align}</math>		y &= R \cos \left(\lambda - \lambda_0\right) \tan \varphi \end{align}</math>

	where ''R'' is the radius of the globe to be projected and ''λ''₀ is the longitude desired for the center point.		where ''R'' is the radius of the globe to be projected and ''λ''<sub>0</sub> is the longitude desired for the center point.

	==See also==		==See also==

210.165.149.211: CleanUp

2018-03-06T06:51:11Z

CleanUp

← Previous revision		Revision as of 06:51, 6 March 2018
Line 2:		Line 2:
	The '''Littrow projection''' is a [[map projection]] developed by [[Joseph Johann von Littrow]] in 1833. It is the only [[Map projection#Conformal\|conformal]], [[Map projection#Retroazimuthal\|retroazimuthal]] map projection. As a retroazimuthal projection, the Littrow shows directions, or azimuths, correctly from any point to the center of the map.		The '''Littrow projection''' is a [[map projection]] developed by [[Joseph Johann von Littrow]] in 1833. It is the only [[Map projection#Conformal\|conformal]], [[Map projection#Retroazimuthal\|retroazimuthal]] map projection. As a retroazimuthal projection, the Littrow shows directions, or azimuths, correctly from any point to the center of the map.

	Patrick Weir of the [[British Merchant Navy]] independently reinvented the projection in 1890, after which it began to see more frequent use as recognition of its retroazimuthal property spread. Maps based on the Littrow projection are sometimes referred to as '''Weir Azimuth diagrams'''.<ref name="Snyder93"/>		Patrick Weir of the [[British Merchant Navy]] independently reinvented the projection in 1890, after which it began to see more frequent use as recognition of its retroazimuthal property spread. Maps based on the Littrow projection are sometimes referred to as '''Weir Azimuth diagrams'''.</ref name="Snyder93">

	The projection transforms from latitude ''φ'' and longitude ''λ'' to map coordinates ''x'' and ''y'' via the following equations:<ref name="Snyder89"/>		The projection transforms from latitude ''φ'' and longitude ''λ'' to map coordinates ''x'' and ''y'' via the following equations:</ref name="Snyder89">
	:<math>\begin{align} x &= R \frac {\sin \left(\lambda - \lambda_0\right)}{\cos \varphi} \\		:<math>\begin{align} x &= R \frac {\sin \left(\lambda - \lambda_0\right)}{\cos \varphi} \\
	y &= R \cos \left(\lambda - \lambda_0\right) \tan \varphi \end{align}</math>		y &= R \cos \left(\lambda - \lambda_0\right) \tan \varphi \end{align}</math>

	where ''R'' is the radius of the globe to be projected and ''λ''~~<sub>0</sub>~~ is the longitude desired for the center point.		where ''R'' is the radius of the globe to be projected and ''λ''₀ is the longitude desired for the center point.

	==See also==		==See also==

← Previous revision		Revision as of 18:29, 3 June 2021
Line 1:		Line 1:
			{{Short description\|Retroazimuthal conformal map projection}}
	[[File:Littrow projection SW.JPG\|300px\|thumb\|Littrow projection of partial hemisphere]]		[[File:Littrow projection SW.JPG\|300px\|thumb\|Littrow projection of partial hemisphere]]
	The '''Littrow projection''' is a [[map projection]] developed by [[Joseph Johann von Littrow]] in 1833. It is the only [[Map projection#Conformal\|conformal]], [[Map projection#Retroazimuthal\|retroazimuthal]] map projection. As a retroazimuthal projection, the Littrow shows directions, or azimuths, correctly from any point to the center of the map.		The '''Littrow projection''' is a [[map projection]] developed by [[Joseph Johann von Littrow]] in 1833. It is the only [[Map projection#Conformal\|conformal]], [[Map projection#Retroazimuthal\|retroazimuthal]] map projection. As a retroazimuthal projection, the Littrow shows directions, or azimuths, correctly from any point to the center of the map.