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From |
tashi lama <[email protected]> |

To |
<[email protected]> |

Subject |
RE: st: ranking variables on the basis of total values of observations |

Date |
Wed, 28 Mar 2012 19:49:50 +0000 |

date var2 var3 var4 1. 05jan2010 3 1 7 2. 06jan2010 2 3 6 3. 07jan2010 4 4 5 4. 08jan2010 1 2 4 5. 09jan2010 5 8 3 6. 10jan2010 8 9 2 7. 11jan2010 4 6 3 8. 12jan2010 3 3 8 9. 13jan2010 1 2 3 Say, I would like to rank var2 for certain period of time say (05jan2010-09jan2010). So, I would have Stata add the obs values from 05jan2010 to 09jan2010 for all the variables and rank var2 like 1st or 2nd or 3rd. I looked at rowsum. I don't think it will help. Thanks, Nick > Date: Wed, 28 Mar 2012 20:34:58 +0100 > Subject: Re: st: ranking variables on the basis of total values of observations > From: [email protected] > To: [email protected] > > As far as I can see this could mean several things. I am not clear > that when you say "rank" you don't mean "order" instead. > > I don't think you want -rowranks- (SSC). > > Why not just give us a toy dataset, with say 5 observations and 5 > variables, and what you want to change it to? Then it should be easier > to see what you want. > > By the way, adding lots of blank lines just makes your posts more > difficult to read. I've edited what came in. > > Nick > > On Wed, Mar 28, 2012 at 8:22 PM, tashi lama <[email protected]> wrote: > > > > I have a list of variables and I would like to rank the variables or any given variable for that matter on the basis of total values of their observations. I thought of approaching this problem in the following way. > > > > 1. find the running sum of all the variables using generate or the total using egen although I think I would prefer generate. > > > > say there are var1 var2 var3 > > > > gen tvar1=sum(var1) > > gen tvar2=sum(var2) > > gen tvar3=sum(var3) > > > > 2. then compare tvar1, tvar2 and tvar3 using if conditions. > > > > Once this is done, I would like to expand such that I can rank those variables but for given period of time. And this is essentially why I think generate sum is better for this problem because it is a running sum. > > > say date var1 var2 var3 > > > > I would like to be able to rank variables say for 01jan2011 to 01feb2011 and so on. > > > > Has anyone worked in this kind of problem before or does anyone have any idea or thought regarding this problem? Any help or lead would be highly appreciated? I saw that there is a stata module rowranks to calculate ranks in a row but i don't know how can it be useful to me. Most probably not.... > > * > * 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/ * * 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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