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[UDUNITS #JQY-420276]: the knot (unit)

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  • Subject: [UDUNITS #JQY-420276]: the knot (unit)
  • Date: Wed, 28 Jul 2010 14:31:56 -0600
Tim,

> On looking through your ³Common, non-SI, units² XML definitions,
> I noticed that the knot (unit of speed) definition appears to be
> incomplete:
> 
> <unit>
> <def>knot</def>
> <aliases>
> <symbol>kt</symbol>
> <symbol>kts</symbol>
> </aliases>
> </unit>
> 
> The international knot is defined to be exactly 1.582 km/h so I¹d
> suggest that the definition should look something like:
> 
> <unit>
> <def>5.14444444e-1 m/s</def>
> <aliases>
> <name><singular>knot</singular></name>
> <name><singular>international_knot</singular></name>
> <symbol>kt</symbol>
> <symbol>kts</symbol>
> </aliases>
> </unit>

Not necessary.  The "international knot" unit is accepted for use with the SI, 
so it's defined in the file "udunits2-accepted.xml".  The entry in 
"udunits2-common.xml" is just to add the abbreviations "kt" and "kts".

Thanks for perusing the database, though.  The more eyes on it, the better.

> Regards,
> 
> Tim Nightingale.
> 
> ------------------------------------------------------------------------
> Tim Nightingale
> Space Science and Technology Department
> Rutherford Appleton Laboratory
> Chilton, Didcot                   Phone: +44/0 1235 445914
> Oxon OX11 0QX                    Fax:   +44/0 1235 445848
> United Kingdom                  Email: address@hidden
> ------------------------------------------------------------------------

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: JQY-420276
Department: Support UDUNITS
Priority: Normal
Status: Closed