What's here?

This directory holds a number of files that conform (roughly) to the
CF UGrid specification and can be accessed using our ugr5() server
function. 

The directories Ike and RENCI have data files that contain ugrids and
that either conform to CF-1.x or have associated ncml that define a
virtual dataset that conforms. Note that the RENCI data acutally
forllows the newer UGrid 0.9 spec where the mesh data uses a 3xN
array; the 'reorg' file uses the older Nx3 mesh data array format. Our
function recognizes both and accommodates them although the 3xN format
is more efficient.

The other files are random ugrid files we've collected and all work or
have associated NcML that uses them as the basis for a virtual dataset
that conforms to CF and ugrid 0.9 (modulo the mesh organization; as
noted previously, our function works with both the old a new
organization scheme).

Note that a bug in the NcML handler, or the processing pipeline for
DAP2 server function evaluation, means that virtual datasets that
rename range variables will fail.