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3 A guided tour 32els. Similarly for row and column. The otherdata fields include variates (yield) and various other variables.The data file lineSee Section 5.7See Section 5.8The data file name is specified immediatelyafter the last data field definition. Data filequalifiers that relate to data input and outputare also placed on this line if they are required.In this example, !skip 1 tells ASReml to readthe data from nin89.asd but to ignore thefirst line in this file, the line containing thefield labels.The data file line can also contain qualifiersthat control other aspects of the analysis.These qualifiers are presented in Section 5.8.NIN Alliance trial 1989variety !Aidpid.row 22column 11nin89.asd !skip 1tabulate yield ∼ varietyyield ∼ mu variety !r replpredict variety0 0 1repl 1repl 0 IDV 0.1See Chapter 10TabulationTabulate statements provide a simple way ofexploring the structure of a data file. They appearimmediately before (or after) the modelline. In this case the 56 simple variety meansfor yield are formed and written to a .taboutput file. See Chapter 10 for a discussion oftabulation..column 11nin89.asd !skip 1tabulate yield ∼ varietyyield ∼ mu variety !r replpredict variety.See Chapter 6Specifying the terms in the mixed modelThe linear mixed model is specified as a list ofmodel terms and qualifiers. All elements mustbe space separated. ASReml accommodates awide range of analyses. See Section 2.1 for abrief discussion and general algebraic formulationof the linear mixed model. The modelspecified here for the NIN data is a simple randomeffects RCB model including fixed varietyeffects and random replicate effects. Thereserved word mu fits a constant term (inter-NIN Alliance trial 1989variety !A.column 11nin89.asd !skip 1tabulate yield ∼ varietyyield ∼ mu variety !r replpredict variety0 0 1repl 1repl 0 IDV 0.1