Custom Query (125 matches)

Filters
 
Or
 
  
 
Columns

Show under each result:


Results (58 - 60 of 125)

Ticket Resolution Summary Owner Reporter
#65 fixed new cell_methods of "range" cf-conventions@… jonathan
Description

1. New cell_methods of range

2. Moderator

Alison Pamment

3. Requirement

Provide a way to indicate that the data value for an element of data variable is the range of values (the absolute difference between the maximum and the minimum) that occur within the cell.

4. Initial Statement of Technical Proposal

Add a entry in the table of Appendix E, as follows

cell_methodsUnitsDescription
rangeuAbsolute difference between maximum and minimum

The choice of the word range is consistent with the existing cell_methods of mid_range.

5. Benefits

The particular use case which motivated the proposal was provided by José María Rodríguez González, who wished to describe the diurnal range of surface air temperature. With the new convention, this could be described by cell_methods="time: range" with a time coordinate variable whose bounds specified daily intervals. This new use of cell_methods corresponds to the use of maximum and minimum to describe the daily maximum and daily minimum temperature.

6. Status Quo

Using the long_name is the most likely alternative.

#66 fixed conformance requirement for standard name modifiers davidhassell jonathan
Description

In section 3.1 of the conformance document, I propose that the item

The units of a variable that specifies a standard_name must be consistent with the units given in the standard name table. The units must also be consistent with a specified cell_methods attribute, if one is present.

should be modified to read

The units of a variable that specifies a standard_name must be consistent with the units given in the standard name table and with the standard_name modifier, if there is one. The units must also be consistent with a specified cell_methods attribute, if one is present.

That will make it consistent with section 3.3 of the CF standard.

#67 fixed remove "missing value" attribute deprecation in Appendix A cf-conventions@… caron
Description

Appendix A has for "missing_value" attribute :

"A value used to represent missing or undefined data (deprecated by the NUG)"

should be:

"A value or values used to represent missing or undefined data."

We missed this in TRAC ticket #58.

Note: See TracQuery for help on using queries.