[CF-metadata] Choice of fill value for unpacked data

2012-09-24 Thread Bentley, Philip
Hi folks, The final para of section 2.5.1 of the CF conventions document describes the use of the _FillValue (or missing_value) attribute in the case of data packed using the scale-and-offset method. What is not clear - at least to me - is what the preferred application behaviour should be in the

Re: [CF-metadata] Another potentially useful extension to the standard_name table

2012-09-24 Thread Simon.Cox
Sorry if this is an ignorant/newbie question, but can I ask if the grammar for CF std_names implicitly provides a check on duplicates? Simon -Original Message- From: Lowry, Roy K. [mailto:r...@bodc.ac.uk] Sent: Saturday, 22 September 2012 4:27 PM To: John Graybeal; Cameron-smith, Phili

Re: [CF-metadata] Another potentially useful extension to the standard_name table

2012-09-24 Thread Jonathan Gregory
Dear Martin, Roy et al. > I understand exactly what you want - or at least I thing I do. I think that > you would like to enter a URL representing the concept 'carbon monoxide' and > get back a document giving you all the Standard Names pertaining to carbon > monoxide. Am I right? I apprecia

Re: [CF-metadata] Another potentially useful extension to the standard_name table

2012-09-24 Thread Lowry, Roy K.
Hello Jonathan, I'm finding myself in total agreement with you and hope to start demonstrate over the coming weeks how vocabulary server technology can cover both Martin's use case and the use case for whic you did your work. Cheers, Roy. From: Jonathan

Re: [CF-metadata] Another potentially useful extension to the standard_name table

2012-09-24 Thread Lowry, Roy K.
Hello Simon, If you're referring to syntactic duplicates then providing the controlled vocabularies covering the grammar elements are well managed the issue is addressed. If you're referring to semantic duplicates (i.e. multiple Standard Names built from synonyms) then no, but there are opinio

Re: [CF-metadata] Another potentially useful extension to the standard_name table

2012-09-24 Thread Cameron-smith, Philip
Hi Simon, et al., The question of semantic duplicates is something that CF has strongly tried to avoid.In a system where we control the grammar and vocabulary rather than the std_names, we would either need to design it so that semantic duplicates are impossible, or find a way to link equi

Re: [CF-metadata] Another potentially useful extension to the standard_name table

2012-09-24 Thread Simon.Cox
Semantic duplicates is my concern. I understand your assertion about the linked data environment, but note that it is only of no consequence if everyone is doing reasoning. Simon -Original Message- From: Lowry, Roy K. [mailto:r...@bodc.ac.uk] Sent: Tuesday, 25 September 2012 2:33 AM T