Hello again Dave
Sorry to bother you for what may be a trivial question (I'm also unfamiliar with
XPath, in case my question is related to XPath syntax)...
On the following page:
https://geo-ide.noaa.gov/wiki/index.php?title=NetCDF_Attribute_Convention_for_Dataset_Discovery#Recommended
For example we can read for the "creator_name" attribute a
"metadata/creator/name" THREDDS path. But I'm not sure how to interpret this
path. Is it a "name" attribute inside a "creator" group which is itself inside a
"metadata" group? What means the @ character that we can read in some place?
(for example "metadata/creator/contact@url")?
Later on the same page, there is a NcML example which contains (simplified):
<group name="THREDDSMetadata">
<attribute name="id" value="crm_v1" />
<attribute name="creator_name" value="David Neufeld"/>
<attribute name="creator_email" value="David.Neufeld@xxxxxxxx"/>
</group>
But this doesn't seem consistent with my previous paragraph:
* The group name is "THREDDSMetadata", not "metadata"
* There is no "creator" sub-group with a "name" attribute, but instead a
"creator_name" attribute.
Furthermore the
http://ngdc.noaa.gov/metadata/published/xsl/nciso2.0/UnidataDD2MI.xsl file seems
to give yet an other picture, since the path is defined as (omitting the global
attribute):
/nc:netcdf/nc:group[@name='THREDDSMetadata']/nc:group[@name='creators']/nc:group[@name='creator']/nc:attribute[@name='name']/@value
Which I interpret as "name" attribute inside a "creator" group, itself inside a
"creators" group (does it means that we can have many groups named "creator"
inside "creators" in a NetCDF file? I know we can do that in XML, but is it
allowed in NetCDF too?), itself inside "THREDDSMetadata" group.
So I'm a little bit confused... Maybe my understing is not correct? What are the
THREDDS attributes we are supposed to look at?
Martin
