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NOAA-PMEL / Ferret

The Ferret program from NOAA/PMEL
https://ferret.pmel.noaa.gov/Ferret/
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recognize new attributes "modulus", "climatology" #655

Open karlmsmith opened 6 years ago

karlmsmith commented 6 years ago

Reported by @AnsleyManke on 6 Jan 2006 21:04 UTC Files such as http://ingrid.ldeo.columbia.edu/SOURCES/.SOC/.GASC97/dods/.das

use the attribute "modulus" where Ferret uses "modulo". For example, the above .das shows this for the time axis

T {
    String long_name "Time";
    Float32 modulus 12.;
    Float32 pointwidth 1.;
    String calendar "360";
    Int32 gridtype 1;
    String units "months since 1960-01-01";
}

Add modulus as an alternative to modulo in cd_get_1_axis.F. We already have the ability to take an modulo length which is saved in a variable line_modulo_len. Check to see if there's some sanity-checking on the value, or if some is needed for these time axes.

Also, the CF standard defines an attribute called "climatology". In its definition, this points to a "climatology variable" which defines the cell bounds of the variable. The bounds seems like overdoing it, and is not generally consistent with Ferret's use of t0=1-jan=0001 to indicate climatologies. Does it make sense to recognize "climatology" as an equivalent to "modulo" for a time axis, and ignore any climatology_bounds variable that the attribute points to?

Migrated-From: http://dunkel.pmel.noaa.gov/trac/ferret/ticket/1375

karlmsmith commented 6 years ago

Modified by @AnsleyManke on 5 Jan 2011 22:19 UTC