Opened 11 years ago

Closed 18 months ago

Last modified 18 months ago

#88 closed enhancement (wontfix)

%O – Promille - thousandth

Reported by: Gunther Schadow Owned by: Christof Gessner
Priority: major Milestone:
Component: help Keywords:

Description (last modified by Simon Cox)

Claire Marie West (clairemwest) proposed in #69 to add

%O – Promille - thousandth

Change History (8)

comment:1 Changed 11 years ago by Gunther Schadow

Status: newreject_proposed

interesting proposal if at all, I would say the o should be lower case "%o". BUT we already have [ppth] - parts per thousand, does it really matter to have a unit symbol for something rather trivial? I will propose rejection, with the invitation of someone else to support the case.

comment:2 Changed 19 months ago by Simon Cox

Component: help
Description: modified (diff)

Actually there is a proper symbol for this: ‰ It is sometimes used in geochemistry, particularly for isotopes. It is functionally the same as [ppth] but might be helpful for the symbol to be available somehow. Is it possible for the UCUM schema to support an alternative symbol?

comment:4 Changed 19 months ago by Brenée Mitchell

Status: reject_proposednew

comment:5 Changed 19 months ago by Brenée Mitchell

Owner: set to Christof Gessner
Status: newassigned

comment:6 Changed 18 months ago by Christof Gessner

This ticket touches on the question of connecting a "printable representation" to a UCUM (atomic) unit. Which raises a lot of question, including how to display UCUM expressions that are not atomic.

I tend to reject this, claiming this is out of scope for the UCUM code system. I saw a related ticket, addressing the question of µg vs ug.

Note that there is a liaison between ISO/TC 215 and ISO/TC 12 with the goal to establish a connection between UCUM and the ISO 80000 series. The latter addresses the question of "printable symbols", among others.

comment:7 Changed 18 months ago by Simon Cox

Resolution: wontfix
Status: assignedclosed

comment:8 Changed 18 months ago by Simon Cox

Apologies for my earlier comment. I was confusing the issue. Yes there is a correct Unicode symbol for promille, but it is not available on a 7-bit ascii keyboard. UCUM codes are explicitly limited to 7-bit ascii keyboards.

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