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From |
Charalambos Karagiannakis <[email protected]> |

To |
[email protected] |

Subject |
st: How to insert scalars (elements from Stata's matricies) as locals' values in the 'forvalues' command? |

Date |
Fri, 19 Oct 2012 10:19:21 +0300 |

Hello dear Statalist friends. I am trying to write a loop to create three new variables that will contain the mean of the initial three variables ‘_Icity_3’, ‘rooms’ and ‘sqrf’ for every selected value (i = 160(1)209) of the ‘time_quarter’ variable. The following loop worked and implemented successfully what I wanted, however I would like to automate the process a bit more and here is where I need your help. local z = 1 foreach X of var _Icity_3 rooms sqrf { generate m_`X' = . forvalues i = 160(1)209 { sum `X' if time_quarter == `i' return list replace m_`X' = r(mean) in `z' local z = `z' + 1 } local z = 1 } In the fourth line of the above code, the values 160 and 209 correspond to the minimum and maximum value of the ‘time_quarter’ variable respectively. Now, every time I update my sample including new observations these two figure might change. That is why I would like to find a way to insert those two number as parameters let’s say. I tried the following (line 4 of the above code was replaced by lines 4&5 in the code below) but it didn’t work. It returns an ‘invalid syntax’ error. local z = 1 foreach X of var _Icity_3 rooms sqrf { generate m_`X' = . sum time_quarter forvalues i = [r(min)](1)[r(max)] { sum `X' if time_quarter == `i' return list replace m_`X' = r(mean) in `z' local z = `z' + 1 } local z = 1 }
PS. I apologize if the subject wasn’t very clear. Thank you in advance guys. Harry K.. |

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