#147: clarification of standard and correction of conformance doc: formula_terms
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Reporter: taylor13 | Owner: cf-conventions@…
Type: defect | Status: new
Priority: high | Milestone:
Component: cf-conventions | Version:
Resolution: | Keywords:
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Comment (by davidhassell):
Hi Karl,
Do these sum up the two cases?
If a coordinate variable has bounds and formula terms but its bounds
variable does not have formula_terms:
{{{
dimensions:
z = 19 ;
y = 73 ;
x = 96 ;
bound = 2 ;
variables:
double hybrid_sigma(z) ;
hybrid_sigma.standard_name =
"atmosphere_hybrid_sigma_pressure_coordinate" ;
hybrid_sigma.formula_terms = "a: A b: B ps: PS" ;
hybrid_sigma.bounds = "hybrid_sigma_bounds" ;
double A(z) ; // HAS bounds
A.bounds = "A_bounds" ;
double B(z) ; // HAS bounds
B.bounds = "B_bounds" ;
double PS(y, x) ;
double hybrid_sigma_bounds(z, bounds) ;
double A_bounds(z, bounds) ;
double B_bounds(z, bounds) ;
}}}
If a coordinate variable has bounds and formula terms and its bounds
variable also has formula_terms:
{{{
dimensions:
z = 19 ;
y = 73 ;
x = 96 ;
bound = 2 ;
variables:
double hybrid_sigma(z) ;
hybrid_sigma.standard_name =
"atmosphere_hybrid_sigma_pressure_coordinate" ;
hybrid_sigma.formula_terms = "a: A b: B ps: PS" ;
hybrid_sigma.bounds = "hybrid_sigma_bounds" ;
double A(z) ; // DOES NOT HAVE bounds
double B(z) ; // DOES NOT HAVE bounds
double PS(y, x) ;
double hybrid_sigma_bounds(z, bounds) ;
hybrid_sigma.formula_terms = "a: A_bounds b: B_bounds ps: PS" ;
double A_bounds(z, bounds) ; // NOT explicitly attached to A
double B_bounds(z, bounds) ; // NOT explicitly attached to B
}}}
The checker has a bit of work to do, in each case, checking whether or not
bounds exist on certain of the terms.
Thanks,
David
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Ticket URL: <https://cf-trac.llnl.gov/trac/ticket/147#comment:21>
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