[udunits] Unusual overriding of prefixed-unit?

• To: "udunits@xxxxxxxxxxxxxxxx" <udunits@xxxxxxxxxxxxxxxx>
• Subject: [udunits] Unusual overriding of prefixed-unit?
• From: "Fischer, Robert P (GISS-611.0)[COLUMBIA UNIVERSITY]" <robert.p.fischer-1@xxxxxxxx>
• Date: Tue, 29 Apr 2014 15:51:56 +0000

Hello,

I'm running on a Mac, with UDUnits from Macports.  Here is my sample program:
     ut_read_xml(NULL);

And I'm getting the following warning/error message:

Definition of "kt" in 
"/Users/rpfische/macports/share/udunits/udunits2-common.xml", line 90, 
overrides prefixed-unit "1000000 kilogram"
Definition of "microns" in 
"/Users/rpfische/macports/share/udunits/udunits2-common.xml", line 336, 
overrides prefixed-unit "1e-15 second"
Definition of "ft" in 
"/Users/rpfische/macports/share/udunits/udunits2-common.xml", line 433, 
overrides prefixed-unit "1e-12 kilogram"
Definition of "yd" in 
"/Users/rpfische/macports/share/udunits/udunits2-common.xml", line 441, 
overrides prefixed-unit "8.64e-20 second"
Definition of "pt" in 
"/Users/rpfische/macports/share/udunits/udunits2-common.xml", line 655, 
overrides prefixed-unit "1e-09 kilogram"
Definition of "at" in 
"/Users/rpfische/macports/share/udunits/udunits2-common.xml", line 1052, 
overrides prefixed-unit "1e-15 kilogram"
Definition of "ph" in 
"/Users/rpfische/macports/share/udunits/udunits2-common.xml", line 1571, 
overrides prefixed-unit "3.6e-09 second"
Definition of "nt" in 
"/Users/rpfische/macports/share/udunits/udunits2-common.xml", line 1578, 
overrides prefixed-unit "1e-06 kilogram"
Some of these make sense, but others do not.  Why would "ft" (a unit of length) 
be overriding "1e-2 kilogram"?  Has anyone else seen this behavior?

Thank you,
-- Bob