View source for Template:Poptoday/doc

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The '''[[Template:Poptoday]]''' calculates the estimated daily population, based on parameters for a known base plus daily increment value. The template name "poptoday" can be used as an accessor template with the {Data...} template family, such as with "{{[[Template:Data United States|Data United States]]|poptoday}}".

Examples:

:* {{xpdop3c|data United States|poptoday}}<br/>"{{tlx|data United States|poptoday|formatnum}}" gives "{{data United States|poptoday|formatnum}}"
:* {{xpdop3c|data world|poptoday}}<br/>"{{tlx|data world|poptoday|formatnum}}" gives "{{data world|poptoday|formatnum}}"

The current population, for today, is estimated by extrapolation, using a base population count on a base date, and extrapolating, based on the observed increase per day.

The increase is 30 ppm/day for the world, and for a country usually between 10 and 50 ppm/day. Since the estimate is based on the day, not on the time of day, the precision is at most 10 ppm, so there are at most 6 [[significant digits]] in the estimated population count.

==Parameters==
The following parameters are used by {poptoday}:
{| style="margin-left:2em"
|-
| 2=comma ||- put commas in population count (same as: 2=formatnum)
|-
| 2=formatnum|| - put commas in population count (same as: 2=comma)
|-
| popbase ||- the base count of the population
|-
| popinc ||- the daily increment of the population
|-
| popbasemonth ||- the month of the population base count
|-
| popbaseday ||- the day of the population base count
|-
| popbaseyear ||- the year of the population base count
|}
Whenever "poptoday" is used as an accessor template, then the parameter values are set inside the host template.

==See also==
* [[Template:Poptoday 1]] and e.g. [[Template:Data world]].

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