Formula:Location map

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Documentation icon Documentatio formulae[considerabit] [recense] [historia]

This template displays a location map as a composite image of an existing map plus a marker and an optional label superimposed onto it. Maps used here are not just images alone. Instead, maps are selected by mapper-template suffixes "XX" (to use template "Location map XX"). Maps can be defined either as squared for equirectangular projections or else, have curved latitude or longitude lines, to skew the location of the marker symbol, as in {{Location map Africa}}. That mapper for Africa uses sine/cosine factors to shift the marker x/y to fit the curved lines. Each mapper template sets its own map borders and decides if skewing x/y for curved lines. See the technical design below, under "Design issues".

Note:

  • Setting caption=xxxxx also frames the map, while an empty "caption=" leaves the map unframed.
  • The coordinates are not checked. If the coordinates fall outside the map, then the marker will try to appear outside the map-image, overlaying the page text.
  • For a map with no marker, set marksize=1.
  • Do not use "px". Using width=200px causes maps to cover a page, use: width=200 (no "px").
  • To create a map with more than one marker, refer below to: See also.
  • To display a map that uses a non-equirectangular projection (i.e. has curved latitude or longitude lines), use skew factors for x/y as in {{Location_map Africa}} or try Template:Location map skew.

Usage[fontem recensere]

Parameter "location" refers to a map definition template. If location is Spain, the map image and coordinates are based on the values set in Template:Location map Spain.

Decimal degree coordinates[fontem recensere]

{{Location map
| location
| lat        = 
| long       = 
| label      = 
| label_size = 
| position   = 
| background = 
| mark       = 
| marksize   = 
| width      = 
| float      = 
| border     = 
| caption    = 
| alt        = 
| AlternativeMap =
}}

Degree, Minute, Second coordinates[fontem recensere]

{{Location map
| location
| lat_deg    = 
| lat_min    = 
| lat_sec    = 
| lat_dir    = 
| lon_deg    = 
| lon_min    = 
| lon_sec    = 
| lon_dir    = 
| label      = 
| label_size = 
| position   = 
| background = 
| mark       = 
| marksize   = 
| width      = 
| float      = 
| border     = 
| caption    = 
| alt        = 
| AlternativeMap =
}}

Parameters[fontem recensere]

Parameter Default Description
{{{1}}} the unnamed 1st parameter contains the location of the map definition (if Spain, then use values from {{Location map Spain}})
lat 0 latitude (decimal format; enter negative numbers for southern latitude)
lat_deg 0 latitude degrees
lat_min 0 latitude minutes
lat_sec 0 latitude seconds
lat_dir N latitude: N = north (default), S = south
long 0 longitude (decimal format; enter negative numbers for western longitude)
lon_deg 0 longitude degrees
lon_min 0 longitude minutes
lon_sec 0 longitude seconds
lon_dir E longitude: E = east (default), W = west
label {{PAGENAME}} label text
label_size 100 label font size as a percentage (<100 = smaller, >100 = larger)
position right label position relative to the mark: left, right, top, bottom, none
background transparent label background color (background-color: {};)
mark Red pog.svg marker image file name ([[Image: {}]])
marksize 8 marker size in pixels, omit px ([[Image: {}px]]
font-size: {}px;)
width 240 map width - omit "px" or will stretch across page (image: {}px
width: ({}+2)px;)
float right position of map on page: left, right, center, none (float: {}; clear: {};
border #CCCCCC border color or none (border: {};)
caption "Marker text (location map name)" map caption; for no caption enter "caption="
alt empty alt text for map; used by screen readers, see WP:ALT
AlternativeMap {{Location map {{{1}}}|image}} Alternative map file name ([[Image: {}]]), must use same border coordinates as the default map

Available map templates[fontem recensere]

There are over 470 mapper templates, named for nations or regions:

See 430 others in: Special:PrefixIndex/Template:Location_map_.

See also Category:Location map templates (currently very incomplete, but useful for some subcategories).

Creating new map templates[fontem recensere]

  1. Find an appropriate blank map in equirectangular projection.
  2. Create a template named Template:Location map location (copy the content of any other map template into it and enter appropriate values).

Examples[fontem recensere]

Default width, float, label position, and caption (decimal coordinates)[fontem recensere]

Pag is on an island
Pag
Pag (Croatia)
  
{{Location map | Croatia
| lat = 44.44
| long = 15.05
| label = Pag
| alt = Pag is on an island
}}

Map with the default caption (degrees/minutes)[fontem recensere]

Pag is on an island.
Pag
Pag (Croatia)
  
{{Location map | Croatia
| lat_deg = 44 | lat_min = 26
| lon_deg = 15 | lon_min = 3
| label = Pag
| position = right
| mark = Green pog.svg <!--green dot-->
| width = 200
| float = right
| alt = Pag is on an island.
}}

Marker/Label outside of Map[fontem recensere]

Rubicon in Italy (outside the map)
Rubicon
Rubicon (Croatia)
  
{{Location map | Croatia
| lat = 44.44
| long = <!--outside map-->11.85
| label = Rubicon
| position = right
| width = 200
| float = right
| alt = Rubicon in Italy (outside the map)
}}

Map with a custom caption and text background[fontem recensere]

Imotski is in Croatia.
Imotski
Imotski in Croatia
  
{{Location map | Croatia
| lat = 43.44
| long = 17.21
| label = Imotski
| position = right
| background = #FFFFDD
| width = 200
| float = right
| caption = Imotski in Croatia
| alt = Imotski is in Croatia.
}}

Map with enlarged marker and label[fontem recensere]

Pag is on an island
Pag
Pag Island in Croatia
  
{{Location map | Croatia
| lat = 44.44
| long = 15.05
| label = Pag
| label_size = 200 <!--200% larger-->
| position = right
| background = #FFFFDD
| marksize = 14
| width = 200
| float = right
| caption = Pag Island in Croatia
| alt = Pag is on an island
}}

Map with no caption or border[fontem recensere]

Brčko is in northeast Bosnia.
Brčko
  
{{Location map | Bosnia
| lat = 44.87
| long = 18.81
| label = Brčko
| position = left
| width = 200
| float = right
| caption = 
| alt = Brčko is in northeast Bosnia.
}}

Alternative style of map[fontem recensere]

Lockerbie is in southern Scotland.
Lockerbie
Lockerbie in Scotland
{{Location map | Scotland
| lat_deg = 55 | lat_min = 07 | lat_sec = 16 | lat_dir = N
| lon_deg = 03 | lon_min = 21 | lon_sec = 19 | lon_dir = W 
| label = Lockerbie
| position = right
| mark = Blue_pog.svg
| marksize = 9
| width = 200
| float = right
| caption = Lockerbie in Scotland
| alt = Lockerbie is in southern Scotland.
}}
Lockerbie is in southern Scotland.
Lockerbie
Lockerbie in Scotland
{{Location map | Scotland2
| lat_deg = 55 | lat_min = 07 | lat_sec = 16 | lat_dir = N
| lon_deg = 03 | lon_min = 21 | lon_sec = 19 | lon_dir = W 
| label = Lockerbie
| position = right
| mark = Blue_pog.svg
| marksize = 9
| width = 200
| float = right
| caption = Lockerbie in Scotland
| alt = Lockerbie is in southern Scotland.
}}

Using Alternative Map[fontem recensere]

Biratnagar Airport is located in southeastern Nepal
Biratnagar
Location of Biratnagar Airport in Nepal
{{Location map | Nepal
| lat_deg = 26 | lat_min = 28 | lat_sec = 53 | lat_dir = N
| lon_deg = 87 | lon_min = 15 | lon_sec = 50 | lon_dir = E
| label = Biratnagar
| position = top
| mark = Airplane silhouette.svg
| marksize = 10
| caption = Location of Biratnagar Airport in Nepal
| alt = Biratnagar Airport is located in southeastern Nepal
}}


Biratnagar Airport is located in southeastern Nepal
Biratnagar
Location of Biratnagar Airport in Nepal
{{Location map | Nepal
| lat_deg = 26 | lat_min = 28 | lat_sec = 53 | lat_dir = N
| lon_deg = 87 | lon_min = 15 | lon_sec = 50 | lon_dir = E
| label = Biratnagar
| position = top
| mark = Airplane silhouette.svg
| marksize = 10
| caption = Location of Biratnagar Airport in Nepal
| alt = Biratnagar Airport is located in southeastern Nepal
| AlternativeMap = Nepal relief location map.jpg
}}

Relief[fontem recensere]

Popocatépetl est in Mexico
Popocatépetl
Popocatépetl (Mexico)
{{Location map | Mexico
| label = Popocatépetl
| lat_deg = 19 | lat_min = 1  | lat_sec = 20 | lat_dir = N 
| lon_deg = 98 | lon_min = 37 | lon_sec = 40 | lon_dir = W
| width = 200
| relief = 1
}}


Popocatépetl est in Mexico
Popocatépetl
Popocatépetl (Mexico)
{{Location map | Mexico
| label = Popocatépetl
| lat_deg = 19 | lat_min =  1 | lat_sec = 20 | lat_dir = N
| lon_deg = 98 | lon_min = 37 | lon_sec = 40 | lon_dir = W
| width = 200
| relief = 
}}

Map that crosses 180° meridian[fontem recensere]

Suva est in Fiji
Suva
Suva (Fiji)
{{Location map | Fiji
| label=Suva
| lat_deg =  18 | lat_min =  8 | lat_sec = 0 | lat_dir = S
| lon_deg = 178 | lon_min = 26 | lon_sec = 0 | lon_dir = E
| position = right
| background = yellow
| mark = Locator_Dot.png
| marksize = 7
| width = 200
| float = right
}}

Design issues[fontem recensere]

Each of the mapper templates named as "Location_map_XX" (such as {{Location_map_Africa}}) contains a map-image name, latitude range, longitude range, or x/y skew factors, as the details hidden by data encapsulation (computer science). Some mapper templates treat latitude/longitude as straight lines (Mercator projections), whereas other mappers have skew factors for maps with curved lines. Hence, each of those templates is not a "fork" of {{Location map}} but instead, they are accessor functions which access the map-border coordinates or skew-factors as shared data, rather than being repeated data in each article using {{Location map Italy}}. If Italy officially changes its map borders, then only that one mapper template need be changed, and only those Italy-related articles will be reformatted. The total of 20,000+ articles using {Location_map} will NOT be reformatted when someone updates each particular "Location_map_XX" and so the impact on Wikipedia server work is reduced, as roughly 450 times faster, by having 450 separate mapper templates.

See also[fontem recensere]

Commons-logo.svg Vicimedia Communia plura habent quae ad Location map spectant.

Formula:Commons-inline