ಟೆಂಪ್ಲೇಟು:Location map Russia Chukotka Autonomous Okrug/doc

Template:Location map Russia Chukotka Autonomous Okrug is a location map definition used to overlay markers and labels on an equirectangular projection map of the Chukotka Autonomous Okrug in ರಷ್ಯಾ. It is used by "Template:Location map" when invoked with parameter "Russia Chukotka Autonomous Okrug": {{Location map | Russia Chukotka Autonomous Okrug | ...}}. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.

Location map for Chukotka Autonomous Okrug

Map parameters
name	Chukotka Autonomous Okrug	name used in default map caption
image	Russia Chukotka Autonomous Okrug location map.svg	file name of map image, without "Image:" or "File:"
x	(100*(({{{3}}} + ({{{3}}} < 0)*360) - (157))/((-167 + 360) - (157)))	an expression which evaluates as 0 along the left edge of the map, and 100 along the right edge of the map, where {{{2}}} and {{{3}}} are the degrees latitude and longitude respectively.
y	(100*({{{2}}} - (73))/((61) - (73)))	an expression which evaluates as 0 along the top edge of the map, and 100 along the bottom edge of the map, where {{{2}}} and {{{3}}} are the degrees latitude and longitude respectively.
top	73	top edge of the map in degrees latitude
bottom	61	bottom edge of the map in degrees latitude
left	157	left edge of the map in degrees longitude
right	-167	right edge of the map in degrees longitude

Usage

For a description of the parameters, see {{Location map}} and {{Location map many}}.

Location map: Eastern hemisphere, Deg/Min/Sec coordinates

{{Location map | Russia Chukotka Autonomous Okrug
| width = 200 | float = right
| caption = Location of [[Anyuysk]] in Chukotka
| label = Anyuysk
| background = lightblue
| position = right
| lat_deg= 68 | lat_min=18 | lat_sec=00 | lat_dir=N
| lon_deg=161 | lon_min=38 | lon_sec=00 | lon_dir=E
}}

Location map: Eastern hemisphere, Decimal coordinates

{{Location map | Russia Chukotka Autonomous Okrug
| width = 200 | float = right
| caption = Location of [[Anyuysk]] in Chukotka
| label = Anyuysk
| background = lightblue
| position = right
| lat = 68.3
| long = 161.633
}}

Location map: Western hemisphere, Deg/Min/Sec coordinates

{{Location map | Russia Chukotka Autonomous Okrug
| width = 200 | float = right
| caption = Location of [[Uelen]] in Chukotka
| label = Uelen
| background = lightgreen
| position = left
| lat_deg= 66 | lat_min=09 | lat_sec=34 | lat_dir=N
| lon_deg=169 | lon_min=48 | lon_sec=33 | lon_dir=W
}}

Location map: Western hemisphere, Decimal coordinates

{{Location map | Russia Chukotka Autonomous Okrug
| width = 200 | float = right
| caption = Location of [[Uelen]] in Chukotka
| label = Uelen
| background = lightgreen
| position = left
| lat = 66.15944
| long = -169.80917
}}

Location map many: Deg/Min/Sec coordinates

{{Location map many | Russia Chukotka Autonomous Okrug
| width = 200 | float = right
| caption = [[Anyuysk]] and [[Uelen]] in Chukotka
| label = Anyuysk | label_size = 90
| bg = lightblue | pos = right
| lat_deg= 68 | lat_min=18 | lat_sec=00 | lat_dir=N
| lon_deg=161 | lon_min=38 | lon_sec=00 | lon_dir=E
| label2 = Uelen | label2_size = 90
| bg2 = lightgreen | pos2 = left
| lat2_deg= 66 | lat2_min=09 | lat2_sec=34 | lat2_dir=N
| lon2_deg=169 | lon2_min=48 | lon2_sec=33 | lon2_dir=W
}}

Location map many: Decimal coordinates

{{Location map many | Russia Chukotka Autonomous Okrug
| width = 200 | float = right
| caption = [[Anyuysk]] and [[Uelen]] in Chukotka
| label = Anyuysk | label_size = 90
| bg = lightblue | pos = right
| lat = 68.3
| long = 161.633
| label2 = Uelen | label2_size = 90
| bg2 = lightgreen | pos2 = left
| lat2 = 66.15944
| long2 = -169.80917
}}

Technical details

For a map using an equirectangular projection which does not cross +/-180 longitude, or +/-90 latitude, the following expressions can be used:

x = 100*(long - left)/(right - left)
y = 100*(lat - top)/(bottom - top)

where lat and long are the degrees latitude and longitude respectively. Here, top and bottom are the degrees latitude of the top and bottom edges of the map, left and right are the degrees latitude of the left and right edges of the map.

Things are a bit more complicated when the map crosses +/-180 longitude, and some sort of "modulo arithmetic" is required. Here, we add 360 if the longitude is less than 0, then use a mapping based on positive coordinates. The following table can be used to check if the expressions are working as desired:

location	lat	long	(x,y) test	(x,y) exact
top/left	73	157	(0,-0)	(0,0)
top/right	73	-167	(100,-0)	(100,0)
bottom/left	61	157	(0,100)	(0,100)
bottom/right	61	-167	(100,100)	(100,100)
center	67	175	(50,50)	(50,50)

See also

• Template:Location map Russia
• Template:Location map Russia (equirectangular)