Found something that should go in unit dictionary (I think)

[Chad Berkley]

Hi David and Dan,

Dan, you're right.  There is already a unitType called volumetricDensity which 
is essentially a numberPerVolume.  Unfortuneately, there is no unit 
numberPerMilliliter, only numberPerMeterCubed.  So David, we can add the unit 
numberPerMilliliter but like Dan said, it would be impractical to add 
XPerMilliter where X could be anything.  We should probably add number per 
Milli, micro, ...,kiloliter while we're at it.

chad

Chad Berkley
Metadata Systems Developer
National Center for Ecological Analysis and Synthesis
735 State St. Suite 300
Santa Barbara, CA 93117


Quoting Dan Higgins <higgins at nceas.ucsb.edu>:

> Hi David,
>     Isn't the unit here really 'number per milliliter' rather that 
> 'cells per milliliter'. (i.e. just a number density) Cells is the thing 
> being counted. Otherwise, one would have units of 'tadpoles per liter', 
> 'apples per square mile', 'oranges per acre'. etc with a different unit 
> for every possible thing that one might want to count.
> 
> Dan Higgins
> 
> ---
> 
> David Blankman wrote:
> 
> > Chad and Tim,
> >
> > I am starting to do EML conversions for the McMurdo LTER. They have a 
> > number of data tables  that relate to plankton. The unit that they use 
> > is cells/milliliter. I am guessing that this is a unit that others 
> > might use.
> >
> > David
> >
> 
> 
> 


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