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    • Sébastien Villemot's avatar
      71edfd05
      Add new “log” option to “var” statement · 71edfd05
      Sébastien Villemot authored
      When an endogenous is declared with “var(log)”, say “y”:
      – creates an auxiliary named “LOG_y”
      – replaces “y(±l)” everywhere by “exp(LOG_y(±l))”
      – adds a new auxiliary equation “y=exp(LOG_y)”
      – adds a new definition “LOG_y=log(y)” in set_auxiliary_variables.m and
        dynamic_set_auxiliary_series.m files
      
      This option also works in conjunction with “deflator=…”, such as “var(log,
      deflator=…)” (the “log” must appear befor “deflator”). There are no provisions
      for combining “log” with “log_deflator”, because that would not make much sense
      from an economic point of view (amounts to taking the log two times).
      
      Ref. dynare#349
      71edfd05
      History
      Add new “log” option to “var” statement
      Sébastien Villemot authored
      When an endogenous is declared with “var(log)”, say “y”:
      – creates an auxiliary named “LOG_y”
      – replaces “y(±l)” everywhere by “exp(LOG_y(±l))”
      – adds a new auxiliary equation “y=exp(LOG_y)”
      – adds a new definition “LOG_y=log(y)” in set_auxiliary_variables.m and
        dynamic_set_auxiliary_series.m files
      
      This option also works in conjunction with “deflator=…”, such as “var(log,
      deflator=…)” (the “log” must appear befor “deflator”). There are no provisions
      for combining “log” with “log_deflator”, because that would not make much sense
      from an economic point of view (amounts to taking the log two times).
      
      Ref. dynare#349