sort : change the sort order of the dataset drop : drop certain variables and/or observations keep : keep only certain variables and/or observations append : combine datasets by stacking merge : merge datasets (one-to-one or match merge) encode : generate numeric variable from categorical varia...
sort : change the sort order of the dataset drop : drop certain variables and/or observations keep : keep only certain variables and/or observations append : combine datasets by stacking merge : merge datasets (one-to-one or match merge) encode : generate numeric variable from categorical varia...
格式:encode varname if in, generate(newvar) label (name) noextend 菜单: data create or change data other variable-transformation commands convert variables from string to numeric 范例:encode make, generate(make2) decode命令:将数值变量转换为字符变量 10、 格式:decode varname if in, generate(new...
How can I use multiply imputed data where original data is not included? String variables How can I quickly convert many string variables to numeric variables? How can I turn a string variable containing dates into a date variable Stata can recognize? How can I extract a portion of a string...
format Set variables’output format [D]label Manipulate labels You will need to create and drop variables,and here is how:[D]generate Create or change contents of variable [D]functions Functions [D]egen Extensions to generate [D]drop Drop variables or observations [D]clear Clear memory 1 ...
2. tab x1 x2 / hist x1 / sum x1 x2 / *kdensity x1 主要内容：观察数据的特征 查...
Cox, University of Durham, UK, FAX (011) 44-91-374-2456, n.j.cox@durham.ac.uk William Gould, Stata Corporation, wgould@stata.com Syntax ] ]destring varlist , noconvert noencode float destring changes string to numeric variables if such a change is possible: 1. It changes a string ...
(~3.5GB), this choice can make a substantial difference in performance. Using the Stata timer command, we performed standardized benchmarks of common programming tasks, such as searching the NIS for a list of ICD-9 codes, converting string data to numeric and putting numeric variables in ...
Stata入门2——数据篇 2021年2月16日星期二 《计量经济学软件应用》课程讲义 1 一、数据录入 直接录入打开dta数据文件导入其它格式的数据文件其它方式 2021年2月16日星期二 《计量经济学软件应用》课程讲义 2 1直接录入 （1）直接在stata中录入（适用于小样本少变量数据）：打开程序，调用数据编辑窗口，直接录入...
S458906 MKPROJECT: Stata module to create a project folder with some boilerplate code and research log by Maarten L. Buis S458905 ITVALPCTILE: Stata module for estimation of interval-valued percentiles (quantiles) for interval-valued data