Generating Log Variables In Stata

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Last updated 27 Oct, 2023
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https://kb.iu.edu/d/afrg

Create a new variable based on existing data in Stata. To create a new variable (for example, newvar ) and set its value to 0 , use: gen newvar = 0. To create a new variable (for example, total ) from the transformation of existing variables (for example, the sum of v1 , v2 , v3 , and v4 ), use ... ...

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https://www.statalist.org/forums/forum/general-stata-discussion/general/1362252-transformation-of-variable-to-log-in-panel-data

Aug 10, 2018 · Yes, it works the same way in panel data. The log is the log. Of course, if your variable takes on zero or negative values then you can't do this (whether panel data or not). And whenever I see someone starting to log transform data, I always wonder why they are doing it.

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https://www.stata.com/statalist/archive/2011-07/msg00787.html

Stata: Data Analysis and Statistical Software Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org . [ Date Prev ][ Date Next …

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https://stackoverflow.com/questions/25471935/generate-log-transformation-of-all-continuous-variables-in-stata-interactions

Generate log transformation of all continuous variables in Stata + interactions. I'm attempting to write a foreach loop in Stata that will automatically generate log transformations of all continuous variables in the dataset (exclude strings, binary variables).

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https://www.stata.com/statalist/archive/2011-02/msg01481.html

You refer to "multiplying" by (-log -e) but > log is a function while -log(x)-e is a composite transformation of x. > Equally there is no mathematical operator that corresponds to [-log-e](x). > Get the mathematics right and Stata can help, but it is not designed to > sort out nonsense mathematics. > > Gordon Hughes > [email protected] > >> ----- >> >> Date: Sat, 26 Feb 2011 12:04:48 -0500 >> From: Melissa King …

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https://ssc.wisc.edu/sscc/pubs/sfs/sfs-vars.htm

You create a new variable in Stata using the generate command, usually abbreviated gen. You can change the value of an existing variable using replace. Since replace can destroy data, it has no abbreviation. The basic syntax is the same for both commands:

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https://www.stata.com/manuals13/gsw11.pdf

6[GSW] 11 Creating new variables generate with string variables Stata is smart. When you generate a variable and the expression evaluates to a string, Stata creates a string variable with a storage type as long as necessary, and no longer than that. where is a str1 in the following example: . list make foreign make foreign 1. VW Rabbit foreign 2.

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https://www.stata.com/support/faqs/data-management/creating-lagged-variables/

Create lag (or lead) variables using subscripts. . gen lag1 = x[_n-1] . gen lag2 = x[_n-2] . gen lead1 = x[_n+1] You can create lag (or lead) variables for different subgroups using the by prefix. For example, . sort state year . by state: gen lag1 = x[_n-1]

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https://www.stata.com/support/faqs/data-management/creating-dummy-variables/

Using generate to create dummy variables. You could type . generate young = 0 . replace young = 1 if age<25 or . generate young = (age<25) This statement does the same thing as the first two statements. age<25 is an expression, and Stata evaluates it; returning 1 if the statement is true and 0 if it is false.

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