Special property "Display precision of"

Editing Properties and typesSpecial properties

Display precision of
Allows to define the display precision in digits
Further Information
Provided by:	extension "Semantic MediaWiki "Allows to store and query data annotated to pages
Added:	2.4.0
Removed:	still in use
Alias:	has no alias
Optional:	no
Visible:	yes
Annotable:	yes
Declarative:	yes
Key:	_PREC
Setting:	not specified
Focus:	not specified
In this wiki:	Property:Display precision of
Table of Contents

The Display precision of property is a special property in Semantic MediaWiki with a built-in meaning: it adds the possibility to specify a display precision for numeric datatypes, i.e. datatype "Quantity"Holds values that describe quantities, containing both a number and a unit, datatype "Temperature"Holds temperature values (similar to type Quantity) and datatype "Number"Holds integer and decimal numbers, with an optional exponent. It was introduced starting with Semantic MediaWiki 2.4.0Released on 9 July 2016 and compatible with MW 1.19.0 - 1.27.x..1

See the property page "Display precision of" to see which pages use this special property on this wiki.

Example

The page of a property called "Has area" might contain:

[[Display precision of::2]]

This will set the display precision for the data values assigned to the respective property to two. Note that rounding applies, i.e. a data value of "123,4567" will be shown as "123,46".

Query printout precision

A printout precision denoted in an #ask query using -p<digit> will override a possible predetermined precision via the property page set by the "Display precision of" special property.2

Syntax

{{#ask:
 [[Category:City]]
 [[Has area::+]]
 |?Has area|+align=right
 |?Has area#-n-p2|+align=right
 |?Has area#m²-p3|+align=right
 |mainlabel=City
}}

Result

City	Has area	Has area	Has area
Amsterdam	219.00 km²84.56 sqmi <br />	219.00	219.000 km²84.556 sqmi <br />
Berlin	891.85 km²344.34 sqmi <br />	891.85	891.850 km²344.343 sqmi <br />
Cologne	405.02 km²156.38 sqmi <br />	405.02	405.020 km²156.378 sqmi <br />
Frankfurt	248.31 km²95.87 sqmi <br />	248.31	248.310 km²95.872 sqmi <br />
Karlsruhe	173.46 km²66.97 sqmi <br />	173.46	173.460 km²66.973 sqmi <br />
London	1,706.80 km²659.00 sqmi <br />	1706.80	1,706.800 km²658.995 sqmi <br />
Munich	310.43 km²119.86 sqmi <br />	310.43	310.430 km²119.857 sqmi <br />
Paris	105.40 km²40.69 sqmi <br />	105.40	105.400 km²40.695 sqmi <br />
Porto	41.66 km²16.08 sqmi <br />	41.66	41.660 km²16.085 sqmi <br />
Rome	1,285.31 km²496.26 sqmi <br />	1285.31	1,285.310 km²496.258 sqmi <br />
San Diego	963.60 km²372.05 sqmi <br />	963.60	963.600 km²372.046 sqmi <br />
Stuttgart	207.35 km²80.06 sqmi <br />	207.35	207.350 km²80.058 sqmi <br />
Sydney	2,058.00 km²794.59 sqmi <br />	2058.00	2,058.000 km²794.594 sqmi <br />
Vienna	414.87 km²160.18 sqmi <br /> 1,073,815,073.82 km²414,600,000.00 sqmi <br />	414.87 1073815073.82	414.870 km²160.181 sqmi <br /> 1,073,815,073.815 km²414,600,000.000 sqmi <br />
Warsaw	516.90 km²199.58 sqmi <br />	516.90	516.900 km²199.575 sqmi <br />
Würzburg	87.63 km²33.83 sqmi <br />	87.63	87.630 km²33.834 sqmi <br />

See also

• Help page on custom units
• Help page on displaying information
• Help page on display precision
• Help page on currency handling