st: create submatrix from estimates

[Kit Baum <baum@bc.edu>]

. webuse grunfeld

. xi: qui regress invest mvalue kstock I.company

. mat beta=e(b)

. mat slope=beta[1,1..2]

. mat rest = beta[1,3..12]

. mat list beta

beta[1,12]
          mvalue        kstock   _Icompany_2   _Icompany_3    
_Icompany_4
y1      .1101238     .31006534     172.20251    -165.27514     42.487396

     _Icompany_5   _Icompany_6   _Icompany_7   _Icompany_8    
_Icompany_9
y1    -44.320126     47.135393     3.7432122     12.751033    -16.925585

    _Icompany_10         _cons
y1     63.728842    -70.296685

. mat list slope

slope[1,2]
       mvalue     kstock
y1   .1101238  .31006534

. mat list rest

rest[1,10]
     _Icompany_2   _Icompany_3   _Icompany_4   _Icompany_5    
_Icompany_6
y1     172.20251    -165.27514     42.487396    -44.320126     47.135393

     _Icompany_7   _Icompany_8   _Icompany_9  _Icompany_10          
_cons
y1     3.7432122     12.751033    -16.925585     63.728842    -70.296685




Kit Baum, Boston College Economics
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html


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