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 toreplacenot onlymyvar[2], but alsomyvar[3]with 42. ...
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?
// 例如,最低的 1/3 定为 0,最高的 1/3 定为 1,中间的 1/3 剔除 xtile dC = C, nq(3) drop if dC == 2 replace dC = 0 if dC == 1 replace dC = 1 if dC == 3 // 后面就和前面类似了 * 4 按照某个连续变量在某一年的中位数进行分组 // 这种分类方式其实还是比较少见的。。
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...
update replace missing data in memory with values from filename replace replace all data in memory with values from filename When observations do not match: unmatched(none) ignore all; the default unmatched(both) include from both datasets unmatched(master) include from data in memory unmatched(us...
graph export "`xlist'.tif",replace image 几点说明 利用xsmle命令有时会出现3200 conformability error,这个错误可能原因有几种:空间权重矩阵维数和数据维数不一致;数据存在缺失值;空间权重矩阵未标准化。此外,若出现initial values not feasible, 可以利用copy选项进行调整。
replace x=if (()<0.5)*output cut Structural equation model Numberofobs=10000Estimationmethod=mlmv Log likelihood=-25495.152---|OIM|Coef. Std. Err. z P>|z|[95%Conf.Interval]---+---Structural|y<-|x|.9985166.0093366106.950.000.98021731.016816_cons|-.0092478.0158659-0.580.560-.0403445.0218488-...