currency-issues
This issues page and the proposal it is regarding are both years out of date. They needs to be updated with microformats2 and using modern currency-examples. - Tantek 23:27, 18 March 2013 (UTC)
Currency - Issues
Unit and Value
Example
<span class="money"> <span class="amount">99</span> <abbr class="unit">¢</abbr> <abbr class="currency" title="USD"></abbr> </span>
<span class="money"> <span class="amount">1.232</span> <abbr class="unit">bill.</abbr> <abbr class="currency" title="EUR">Euro</abbr> </span>
Problem
The base for this data (amount) is the currency - USD (U.S. Dollar). But the amount is not 99 Dollar, its 0.99 Dollar. The unit is ¢ (U.S. Cent). While the currency value is defined by ISO 4217, there is no list for a currency and its corresponding factors to the currency base. Therefore it would be problematic to automatic transfere those values.
Similar Problem is the use of billion like 1.232 Bill. Euro. But the amount is not 1,232,000,000 Euro like an native English reader might think, in German it means 1,232,000,000,000 Euro.
Alternative 1
Providing the amount corresponding to the currency:
<span class="money"> <abbr class="amount" title="0.99">99</abbr> <abbr class="unit">¢</abbr> <abbr class="currency" title="USD"></abbr> </span>
<span class="money"> <abbr class="amount" title="1232000000000">1.232</abbr> <abbr class="unit">bill.</abbr> <abbr class="currency" title="EUR">Euro</abbr> </span>
Alternative 2
Providing the unit-factor corresponding to the currency base:
<span class="money"> <span class="amount">99</span> <abbr class="unit" title="0.01">¢</abbr> <abbr class="currency" title="USD"></abbr> </span>
<span class="money"> <span class="amount">1.232</span> <abbr class="unit" title="1000000000000">bill.</abbr> <abbr class="currency" title="EUR">Euro</abbr> </span>
Alternative 3
Providing the unit-factor corresponding to the currency base in an own element "scale" (I will suggest this also to the measurement format discussion.) Therefore the unit can be used for the currency itself - then it is more in line with a general measurement format.
<span class="money"> <span class="amount">99</span> <abbr class="scale" title="0.01">¢</abbr> <abbr class="unit" title="USD"></abbr> </span>
<span class="money"> <span class="amount">1.232</span> <abbr class="scale" titel="1000000000000">bill.</abbr> <abbr class="unit" title="EUR">Euro</abbr> </span>
or with built-in scale:
<span class="money"> <span class="amount">99</span> <abbr class="scale" title="C">¢</abbr> <abbr class="unit" title="USD"></abbr> </span>
<span class="money"> <span class="amount">1.232</span> <abbr class="scale" titel="TR">bill.</abbr> <abbr class="unit" title="EUR">Euro</abbr> </span>
Comments
- Alternative 1 is the nearest to being correct, according to the model I have proposed. Andy Mabbett 07:24, 2 Jan 2007 (PST)
- I know, that Alternative 1 is the nearest to your model - but having the measurment format in mind, I think that Alternative 3 would be the more logical approache. I suggested there to have value (in replace for the amount), scale (like you defined the unit) unit (different use: name of the unit - like your currency and for money as a measurement format the unit is limited to the list of ISO 4217). So you would have a compatible measurement format and money as its sub-format --Emil 11:03, 4 Jan 2007 (PST)
ABBR Pattern
Somewhat perverse use of the ABBR element. In the proposal the following example is given, where the "abbreviation" is significantly longer than its expansion.
<abbr class="amount" title="39">Thirty-nine</abbr>