1 Stata: replace missing values with existing observations 0 Stata: How do I replace missing values with a non-missing value within a cluster? 0 Filling in missing values 6 How to fill in missing values by group? 0 How can I fill values from duplicates in Stata? ...
I am trying to replace missing values with values from the same column dependent on their equality from other columns: I have different firms, from different industries & countries and from different years. Below is just a small example. I would like to replace the missing values (in the col...
missing: 将缺失值当作一个取值进行分类。若不使用missing选项,变量列表varlist中任意变量的取值是缺失值,生成的newvar就是缺失值。 label[(lblname[, replace truncate(#)])]: 创建值标签。 */ ** total: 对多个样本取值进行加总egen newvar= total(exp) [, missing] /* missing: 若使用missing选项,当exp...
I have two variabled called "prean" and "pa_kum" that contain missing values. These missing values i would like to replace by 0 (zero). What command can i use to do this? Thanks in advance for your support. Regards -- View this message in context: http://statalist.1588530.n2....
The problem I have is that stata does not consider missing values when computing the variance. > > If i write the code: > > by isin: egen variance20001230=var(price) if datum>=20000101 & datum< 2000123 > 0 > > this gives me the 1-year variance for every stock between 200010101 and...
stata数值型转化为字符型:tostring.webuse tostring,clear .des .list .tostring year day,replace.des .gen date1=month+”/”+day+”/”+year //.list.gen date2=date(date1,”mdy”)最后一行不是计算从那天起直到括号中指定的某天date1一共过了多少天,为什么我的date2数据生成不了呢?还说(10 missing ...
stata数值型转化为字符型:tostring.webuse tostring,clear .des .list .tostring year day,replace.des .gen date1=month+”/”+day+”/”+year //.list.gen date2=date(date1,”mdy”)最后一行不是计算从那天起直到括号中指定的某天date1一共过了多少天,为什么我的date2数据生成不了呢?还说(10 missing ...
dplyr makes it so easy to subset and do stuff, it makes programming in R almost as easy as programming in Stata (which is very easy, although limited), while keeping the benefits of R (free, multiple object, great graphs, out of memory alternatives). The students were almost angry that...
还说(10 missing values generated) 相关知识点: 试题来源: 解析 应该这样:webuse tostring,clear des list tostring year day,replacedes gen date1=month+"/"+day+"/"+year listgen date2=date(date1,"MDY")
Stata's heckman command is a good example of this. In such cases, there will be observations where missing values are allowed and other observations where they are not—where their presence should cause the observation to be eliminated. If you specify missing, it is your responsibility to ...