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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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To learn about what's going on, see About the Archive Site.
Hello again DaveSorry 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#RecommendedFor 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']/@valueWhich 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
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