To statalist@hsphsun2.harvard.edu Subject st: Generate a new variable [four firm concentration ratio] Date Mon, 21 Nov 2005 15:58:55 -0500Dear all, I use stata 9.1 I have an unbalanced panel data of the type: geographical region (m = 1..1154) year (t = 1..7) with the follow...
Title generate — Create or change contents of variable stata.com Description Options Also see Quick start Remarks and examples Menu Methods and formulas Syntax References Description generate creates a new variable. The values of the variable are specified by =exp. If no type is specified, the ...
permanently specifies that, in addition to making the change right now, the new limit be remembered and become the default setting when you invoke Stata. ExamplesSetupwebuse genxmpl3 Create new variable age2 containing the values of age squared...
Stata 14 includes a new default random-number generator (RNG) called the Mersenne Twister (Matsumoto and Nishimura 1998), a new function that generates random integers, the ability to generate random numbers from an interval, and several new functions that generate random variates ...
您可以使用生成替换可以执行的任何操作。 命令之间的唯一区别是 replace 要求变量已经存在,而 generate 要求变量是 new 。 事实上,在 Stata 内部,生成和替换具有相同的代码。 由于 Stata 是一个交互式系统,我们强制区分替换现有值和生成新的,以便您在认为自己正在创建新信息时不会意外地替换有价值的数据。
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Title kdensity — Univariate kernel density estimation stata.com Syntax Remarks and examples References Menu Stored results Also see Description Methods and formulas Options Acknowledgments Syntax kdensity varname if in weight , options options Main kernel(kernel) bwidth(#) generate(newvarx newvard) ...
ends(strvar) , punct(pchars) trim head | last | tailmay not be combined with by. It gives the first "word" or head (with the head option), thelast "word" (with the last option), or the remainder or tail (with the tail option) from stringvariable strvar.egen newv...
For instance, we have data on cholesterol levels (chol) and wish to have a variable that, for each patient, records the deviation from the average across all patients: . use https://www.stata-press.com/data/r19/egenxmpl . egen avg = mean(chol) . generate deviation = chol - avg ...
new variable with stata elapsed time format for my days and transformed it to weeks. Now I don't know how to get the frequencies of my variables for a certain week. Probably this is pretty easy to do with stata but I don't have a clue and still waiting for the stata user manual ...