Missing values may occur in blocks of two or more. Suppose you want to replace missings by the previous nonmissing value, whenever it occurred, so that given _n myvar 1 42 2 . 3 . 4 56 5 67 6 78 you want torepl
一般情况下可以分为两种：一种方法是通过一个覆盖全局的掩码表示缺失值， 另一种方法是用一个标签值（...
Carryforward data for a limited number of rows - Statalist carryforward——填充缺失值| Stata-Club 李春涛:Post 命令处理股本变动 CARRYFORWARD: Stata module to carry forward previous observations How can I replace missing values with previous or following nonmissing values or within sequences? 相关课...
; in particular, this is the way cumulative sums are calculated usingsum(). More generally, Stata always works in this direction unless otherwise stipulated. For other applications of that principle, see the FAQHow can I replace missing values with previous or following nonmissing values?
carryforward id year, replace 4.3 广义缺失值 carryforward x ,gen(x1) carryforward y ,gen(y1) carryforward x ,gen(x2) extmiss carryforward y ,gen(y2) extmiss * extmiss 选项指定 extended missing values (.a, .b, etc.) 为实际数值 ...
winsor2 x1 x2 x3 x4 x5 , replace cuts(1 99) :批量处理多个变量;replace 选项,可以不必生成新变量 第二,安装xtabond2 ssc install xtabond2 第二步,最简单的语法形式:xtabond2 depvar(因变量) varlist(系列解释变量:前置变量、严格外生变量、内生变量) simple autoregressive model(AR自回归模型) with no...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 use https://www.stata-press.com/data/r17/sp500, clear histogram volume graph save "$figures\histo_01", replace histogram volume, fraction graph save "$figures\histo_02", replace graph combine "$figures\histo_01" "$figures\histo_02", row...
winsor2 x1 x2 x3 x4 x5 , replace cuts(1 99) trim 没有trim的就是用边界值替换边界外的, values smaller than the 1th percentile is repalce by the 1th percentile, and the similar thing is done with the 99th percentile. 加trim的就是直接舍去边界外值,discard values smaller than 1th percent...
mi语法简介：Stata中的missings数据处理说明书 Title intro—Introduction to mi Syntax £ To become familiar with mi as quickly as possible,do the following:1.See A simple example under Remarks below.2.If you have data that require imputing,see[MI]mi set and[MI]mi impute.3.Alternatively,if ...
Stata统计分析常用命令汇总一winsorize极端值处理范围:一般在1和99分位做极端值处理,对于小于1的数用1的值赋值,对于大于99的数用99的值赋值。1Stata中的单变量极端值处理:stata 11.0,在命令窗口输入findit