== Format305 for control files for the TrendTest software ==
The file305_POPBRD files are prepared by ITBC early in a test run and distributed to the NGECs that need to perform conventional validation for at least one trait in a given population (POP) and breed of evaluation (BRD).
||'''Col''' ||'''Name''' ||'''Format''' ||'''Description''' ||
||1 ||tgrp ||char ||Trait group code (prod/conf/uder/long/calv/fert/work) ||
||2 ||trt ||char ||Trait code (see[[https://interbull.org/ib/idea_trait_codes|here]]) ||
||3 ||evaldate ||int ||National evaluation date (yyyymmdd; from param file uploaded to IDEA) ||
||4 ||herit ||float ||Heritability (from param file uploaded to IDEA) ||
||5 ||siresd ||float ||Sire SD estimated at ITBC in current test run ||
||6 ||merit ||char ||Genetic merit definition (B+/B-/T+/T-) ||
||7 ||type2x ||char ||Whether foreign bulls (with type of proof 21 or 22) should be included (Y/N) ||
||8 ||min_hrd ||int ||Minimum herds to include a bull ||
||9 ||min_dgh ||int ||Minimum daughters to include a bull ||
||10 ||byr1 ||int ||First birth year to include for method 1 (1986 for HOL, 1981 for others) ||
||11 ||miny ||int ||First birth year to include for method 3 ||
||12 ||maxy ||int ||Last birth year to include for method 3 ||
||13 ||corr ||int ||Correlation between new and old evaluations for method 3 (R=0.99) ||
||14 ||preval ||char ||Date of previous validation (yy-mon) for traits last validated more than two years ago ||
||15 ||chg ||char ||Change code (Y/N): whether validation is required because population is included for first time or because large changes where introduced in national evaluations for this trait ||




'''Notes'''

 * BRD: breed of evaluation (BSW/GUE/HOL/JER/RDC/SIM)
 * POP: population code (see [[https://wiki.interbull.org/public/Idea_population_codes?action=print|here]])
 * there is a header line which will be skipped by the software
 * there is an extra space between all fields to allow the file to be easily parsed without needing to specify fixed column positions

'''Sample data records'''

{{{
#grp trt evaldate  herit     siresd gm x mh md byr1 miny maxy corr preval chg
prod mil 20120101 0.2800  543.07922 B+ N 10 20 1986 1998 2002 0.98 ------ N
prod fat 20120101 0.2800   21.49578 B+ N 10 20 1986 1998 2002 0.98 ------ N
prod pro 20120101 0.2800   15.76838 B+ N 10 20 1986 1998 2002 0.98 ------ N
uder scs 20120101 0.1750   11.52474 B+ N 10 20 1986 1998 2002 0.98 ------ Y
conf sta 20120101 0.4500    0.95646 B+ N 10 20 1986 1998 2002 0.99 99-may N
conf usu 20120101 0.2100    0.90437 B+ N 10 20 1986 1998 2002 0.99 99-may N
conf loc 20120101 0.1200    1.00971 B+ N 10 20 1986 1998 2002 0.99 99-may N
}}}