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To |
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Subject |
st: From: sabbas gidarokostas <sabbasgidarokostas@googlemail.com> |

Date |
Fri, 27 Jul 2012 10:41:48 +0200 |

Dear all, I have the following panel data set clear all input str8 (id text dates values1 values2 ) "1" "ot" " " "" " " "1" "wt" " " "" " " "1" "rt" "MA 2005" "32.4" "2.5" "1" "gh" "MJ 2005" "82.3" "12.5" "1" "bg" "JA 2005" "2.5" "24.5" "1" "se" "SO 2005" "82.5" " " "1" "cv" "ND 2005" "62.3" "26.3" "1" "cv" "JF 2006" "12.2" "22.3" "1" "cv" "MA 2006" "22.1" "2.4" "2" "ot" " " " " " " "2" "wt" " " " " " " "2" "rt" "MA 2005" "2" "gh" "MJ 2005" "32.3" "23.5" "2" "bg" "JA 2005" "52.4" "22.3" "2" "se" "SO 2005" "82.9" "22.5" "2" "cv" "ND 2005" " " "2.5" "2" "cv" "JF 2006" "332.4" " " "2" "cv" "MA 2006" "312.4" "21.5" end The above data set is a sample. Basically,I have 30000 individuals and instead of the last 2 columns that contain the numbers I have 29 such columns. The data set refers to bimontly values. Is there a way to convert the above data to montly data? Specifically, What I think is that first I have to split the dates as follows M/2005 A/2005 M/2005 J/2005 and so forth and then to convert them to 3/2005 4/2005 6/2005 and so forth. So regarding the first 3 columns I should get "1" "ot" " " "1" "wt" " " "1" "rt" "3/2005" "1" "rt" "4 2005" "1" "gh" "5/2005" "1" "gh" "6/2005" and so forth.I am not exactly sure how to handle the last two columns, though(numerical values) I think that one way would be to divide the bimonthly values by 2. Then I get "1" "ot" " " "1" "wt" " " "1" "rt" "3/2005" "32.4/2" "2.5/2" "1" "rt" "4 2005" "32.4/2" "2.5/2" "1" "gh" "5/2005" "82.3/5" "12.5/5" "1" "gh" "6/2005" "82.3/5" "12.5/5" I am not sure that this makes sense as I have repeated values for two consequtive months. Another way would be interpolation? Any code provided is greatly appreciated. thanks * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

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