Hi Niall, do you use the same freq grid for both the LUT calculation and the RT calculation? if so, see patrick&stefan. if not, it might be an interpolation issue. i don't remember what is the status on freq interpolations when using LUT (whether allowed, forbidden, or allowed by setting some flag...) - stefan, do you remember?
best wishes, Jana On Wed, Jul 29, 2015 at 5:59 PM, Stefan Buehler < [email protected]> wrote: > Hi, > > I have never seen this before; this could indicate that it is related to > QPack output format as you suggest. > > /Stefan > > > On 28.07.2015, at 22:19, Patrick Eriksson <[email protected]> > wrote: > > > > Hi Niall, > > > > I have no proper answer. Could be a rounding error. You could test by > playing around with > > > > Q.OUTPUT_FILE_FORMAT > > Q.INPUT_FILE_FORMAT > > > > Make sure that both are double or binary. > > > > Stefan, any comment? How strict is this check? > > > > Bye, > > > > Patrick > > > > On 07/28/15 12:17, Niall Ryan wrote: > >> > >> Hello, > >> > >> I am trying to use a lookup table for a an inversion setup and am > >> having some errors that I don't really understand. > >> > >> The error that I receive is below and related to the abs_lookupAdapt > method. > >> It cannot find a frequency in the lookup table frequency grid. The > >> first frequency value in the lookup table is "230100961900", and the > >> error states that it cannot find frequency "2.30101e+11Hz". I thought > >> it might be some sort of rounding error but I don't know. > >> > >> I am using the same Q structure for creating the tables and performing > >> the inversion. > >> Any help is appreciated. > >> > >> Best regards, > >> Niall Ryan > >> > >> > >> Run-time error in controlfile: > >> > /private/tmp/atmlab-niall-tp1e945327_f67b_4dab_a240_f8d486be3cc9/cfile.arts > >> Run-time error in method: abs_lookupAdapt > >> Cannot find new frequency 0 (2.30101e+11Hz) in the lookup table > >> frequency grid. > >> Stopping ARTS execution. > >> Goodbye. > >> > >> Error using arts (line 67) > >> An error occured while executing ARTS. See above. > >> > >> Error in arts_oem_init>init_local (line 411) > >> arts( cfile ); > >> > >> Error in arts_oem_init (line 161) > >> [Q,R,t_field,z_field,vmr_field,wind_u,wind_v,wind_w] > >> = init_local( Q, R ); > >> > >> Error in qpack2 (line 97) > >> [Qm,O,R,xa] = arts_oem_init( Qm, O, workfolder > >> ); > >> > >> Error in invert_structures_from_listnew (line 261) > >> L2rel = qpack2(Q,O,Y); > >> > >> _______________________________________________ > >> qpack mailing list > >> [email protected] > >> https://www.sat.ltu.se/mailman/listinfo/qpack > >> > > _______________________________________________ > qpack mailing list > [email protected] > https://www.sat.ltu.se/mailman/listinfo/qpack > -- ===================================================================== Jana Mendrok, Ph.D. (Research Associate) Luleå University of Technology Department of Computer Science, Electrical and Space Engineering Division of Space Technology PO Box 812 981 28 Kiruna, Sweden Phone : +46 (0)980 6 7540 =====================================================================
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