Hi all,
My name is Sean Gaffney, from the British Oceanographic Data Centre, and I'm working on a project dealing with numerical model data that are in CF compliant NetCDF, so I thought I'd sign up to the community.
The project I am working on aims to develop a web-based delivery system for oceanographic numerical model data and has a module which allows visualisation of the data. We've been using test CF data to fine-tune some of the technical aspects of this visualisation.
I have a particular issue at the moment which I hope someone out there might be able to assist me with.
My problem started when I found that the test CF data were passing the BADC CF compliance checker, but not visualising properly. A check with the people who developed the visualisation module led to the discovery that, while the CF metadata were formatted correctly, the actual values within the metadata were incorrect e.g. the valid_min and valid_max attributes for both the latitude and longitude and dimensional variables had values which did not reflect the actual range of data in the file. The visualisation was setting itself up based on the values stored in the attributes and was therefore not displaying any data.
Has anyone in the CF community come across this sort of issue before and if so, what solutions would you recommend? My initial thoughts were that I'd have to develop some sort of code which interrogates the data file and compares the entries in the CF metadata header against the actual data values in the file, but I'd be interested to see what people think. Please bear in mind that I won't actually be generating model runs myself, but will be receiving data from people that have done so and need to know that I'm being given valid data and metadata.
Sorry for making my first message to the CF community so long.
Looking forward to your responses
Yours
Sean Gaffney
BODC
--------------------------------------------------------------------------------
Sean Gaffney
Data Scientist
British Oceanographic Data Centre
Joseph Proudman Building
6 Brownlow Street
Liverpool
L3 5DA
UK
+44 (0)151 795 4950
--
This message (and any attachments) is for the recipient only. NERC
is subject to the Freedom of Information Act 2000 and the contents
of this email and any reply you make may be disclosed by NERC unless
it is exempt from release under the Act. Any material supplied to
NERC may be stored in an electronic records management system.
Received on Thu Apr 19 2012 - 09:13:51 BST
