下面以两性状（bw1,bw2）动物模型为例，看一下他的代码文件

包括六个部分

• 分析描述文件
  TITLE breeding value estimation for phen1 and phen2 using pedigree

• 观测值和固定因子，定义表型文件data.csv

  Observations & systematic effects

  DATAFILE ExampleDat.txt !MISSING -99
  animal A
  fix1 A
  fix2 I
  cov R
  ran A
  phen1 T
  phen2 T
  blk I

• 个体间的亲缘关系，定义系谱文件pedigree.csv

  Genetic similarity among individuals

  PEDFILE ExamplePed.txt
  animal A
  sire A
  dam A
  blkped I

• 性状的方差协方差组分，定义方差协方差文件

  Components of variance and covariance among traits

  PARFILE ExamplePar.dat

• 统计模型，定义模型

Statistical models

MODEL
phen1 ~ fix1 cov !RANDOM ran G(animal)
phen2 ~ fix2 cov !RANDOM ran G(animal)

• 分析和结果输出

Control of analysis and output

SOLVING
!MAXIT 1000

语法介绍

The field type indicates whether a field in the data file should be read as an integer value (I), a real value for covariates (R), a real value for a trait (T) or a text string (A).

Defines the type of the variable in this field. Available types are I, R, T and A.
I for integer values
R for real values
T for trait
A for alphanumerical values

I 整数
R 协变量
T y变量
A 字符