Template talk:Inflation

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Template-protected edit request on 30 December 2024

This edit request to Template:Inflation/year has been answered. Set the |answered= parameter to no to reactivate your request.

Change | CN = 2019 to | CN = 2023. Zoozaz1 (talk) 03:02, 30 December 2024 (UTC)[reply]

Done * Pppery * _{it has begun...} 05:04, 30 December 2024 (UTC)[reply]

How does "r" work?

Can somebody explain to me how the "r" (rounding) parameter works? I understand the concept of significant digits, but what r does seems only vaguely related to that, and expressed in a way I find inscrutable. I've never used anything other than negative values, and usually end up doing trial-and-error until I find a value that does what I want. I tried looking at the template source code, and ran away screaming in horror. RoySmith (talk) 13:29, 4 February 2025 (UTC)[reply]

It's not about significant digits exactly. It's about where the rounding happens, either at (r=0), after (r=2, for example), or before (r=-3) the decimal point. To get hundredths of a dollar or other currency, use r=2 (i.e. 2 digits to the right of the decimal point). To get the number rounded to the nearest thousand, use r=-3 (i.e. 3 digits to the left of the decimal point). That's what the documentation appears to say, anyway. If you have examples that don't match that explanation, please provide them here. – Jonesey95 (talk) 01:13, 6 February 2025 (UTC)[reply]

@Jonesey95 The main issue that I can see is that the template cuts off final zeroes, even if r= is specified, so you end up with silly things like {{Inflation|index=US-GDP|value=1|start_year=2005|r=2}} giving 1.5, not 1.50. This really does need fixing, in my opinion. Theknightwho (talk) Theknightwho (talk) 20:07, 14 February 2025 (UTC)[reply]

I agree that seems like a bug. – Jonesey95 (talk) 21:17, 14 February 2025 (UTC)[reply]

It is easier to understand with an example:

{{formatnum:{{Inflation|US|2923706.026|2009|r=3}}}} —> 4,285,109.08 (3 decimal places)
{{formatnum:{{Inflation|US|2923706.026|2009|r=2}}}} —> 4,285,109.08 (2 decimal places)
{{formatnum:{{Inflation|US|2923706.026|2009|r=1}}}} —> 4,285,109.1 (automatic rounding removes the 0)
{{formatnum:{{Inflation|US|2923706.026|2009|r=0}}}} —> 4,285,109 (whole number)
{{formatnum:{{Inflation|US|2923706.026|2009|r=-1}}}} —> 4,285,110 (-1 decimal place)
{{formatnum:{{Inflation|US|2923706.026|2009|r=-2}}}} —> 4,285,100 (-2 decimal place)
{{formatnum:{{Inflation|US|2923706.026|2009|r=-3}}}} —> 4,285,000 (-3 decimal place)

Betty Logan (talk) 20:33, 6 February 2025 (UTC)[reply]

Edit request 8 February 2025

This edit request has been answered. Set the |answered= parameter to no to reactivate your request.

Description of suggested change: Per https://www.minneapolisfed.org/about-us/monetary-policy/inflation-calculator/consumer-price-index-1800-, the 2024 data can be added as 944.9 for Inflation/US/dataset. Kline • talk • contribs 19:21, 8 February 2025 (UTC)[reply]

Done * Pppery * _{it has begun...} 22:03, 24 February 2025 (UTC)[reply]

Edit request 25 February 2025

This edit request has been answered. Set the |answered= parameter to no to reactivate your request.

Description of suggested change: please update the NZ year in {{Inflation/year}} and the citation year in {{Inflation/fn}} from 2021 to 2024, see update to Template:Inflation/NZ/dataset.

Diff:

Jon (talk) 03:30, 25 February 2025 (UTC)[reply]

Done * Pppery * _{it has begun...} 17:11, 25 February 2025 (UTC)[reply]

Invalid year issue

Some weird stuff's happening on Template:ShipCost/doc and Template:AircraftCost/doc due to this template.
{{ShipCost|FRA|3600000|year=1795}} Works fine.
{{ShipCost|FRA|3600000|year=1796}} hell breaks loose. Claiming NaN and reports a misnested strong error.
{{AircraftCost|FRA|3600000|year=1795}} Works fine.
{{AircraftCost|FRA|3600000|year=1796}} Broken, claiming NaN and reports a misnested strong error.
If someone knows what's going on here and can correct the issue, would you? Thanks! Zinnober9 (talk) 23:09, 1 March 2025 (UTC)[reply]

Comma consistency

I've just noticed that {{Inflation}} Will ignore any commas. Why? Isn't it possible to have the input/output figures consistent with each other?

My example:

results in:

£12000 (equivalent to £12,378,344 in 2023) (i.e., £12000, no comma, £12 million, commas.)

Cheers, —Fortuna, imperatrix 10:22, 13 June 2025 (UTC)[reply]

The above example is confusing because it has no comma in the input but we worked it out at Wikipedia:Help desk#Template:Inflation (comma (in)consistency). Commas are only ignored when the value is used in calculations, not when the original value is displayed with |orig=yes, so "Will ignore any commas" in the documentation seems a little misleading. It turned out the poster had an unrelated issue: An empty |r= causes an error. {{Inflation|KRW|100|2000|r=}} produces:

Error when using {{Inflation}}: NaN/calculation error please notify Template talk:Inflation.

Templates are usually coded to produce the same with an empty and an omitted parameter. It's done with the simple {{{r|}}} if there is no default but it gets messier with a default. If the call has an empty |r= then {{{r|0}}} will produce the empty string and not 0. I suggest this workaround to replace the two {{{r|0}}}: {{#if:{{{r|}}}|{{{r}}}|0}}. It says: If r is both set and non-empty then use r, otherwise use 0. PrimeHunter (talk) 13:51, 13 June 2025 (UTC)[reply]

Thanks PrimeHunter, apologies for posting twice. I realised after posting here that it didn't seem to get much footfall so went to yon desk instead. I meant to delete this one. —Fortuna, imperatrix 09:23, 14 June 2025 (UTC)[reply]

AWB request relating to this template

Just an FYI: see Wikipedia:AutoWikiBrowser/Tasks § Articles using Template:Inflation with CURRENTYEAR. Graham87 (talk) 07:27, 15 June 2025 (UTC)[reply]