Hello, I was wondering if anyone has ever had use for an ancillary variable (or data variable pointed to from a formula_terms attribute), having a size 1 dimension which the "parent" field does *not* have. The convention do not say anything about this.
For example: dimensions: t = 1; x = 96; y = 73; variables: float q(x, y) ; q:standard_name = "specific_humidity" ; q:units = "g/g" ; q:ancillary_variables = "q_error_limit" ; float q_error_limit(t, x, y) q_error_limit:standard_name = "specific_humidity standard_error" ; q_error_limit:units = "g/g" ; Similary for a scalar coordinate variable, which is logically equivalent to the size 1 dimension case (this time shown on a formula terms variable): dimensions: x = 96; y = 73; z = 19; variables: float q(z, x, y) ; q:standard_name = "specific_humidity" ; q:units = "g/g" ; float z(z): z:standard_name = "atmosphere_hybrid_height_coordinate"; z.formula_terms = "a: var1 b: var2 orog: var3" float var3(x, y): time:coordinates = "time"; float time: time:standard_name = "time"; time:units = "days since 2000-12-1"; Thanks for your help, All the best, David -- David Hassell National Centre for Atmospheric Science (NCAS) Department of Meteorology, University of Reading, Earley Gate, PO Box 243, Reading RG6 6BB, U.K. Tel : +44 118 3785613 E-mail: d.c.hass...@reading.ac.uk _______________________________________________ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata