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 variable using regular expressions? Error messages How can I handle the matsize too small ...
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...
Up to 2.1 billion observations in Stata/SE and Stata/BE Sorting Ascending or descending sorts Multiple-key sorts Numeric and string sorts Locale-aware Unicode string sorting and comparison Combining datasetsMerge datasets By key variables By observations Join datasets Outer join Append datasets ...
图2. 宽形数据(wide form) 使用Stata 进行数据处理十分便捷,其中的reshape命令就是用于实现数据形态之转换的,即 Convert data fromwidetolongform and vice versa。不论哪种数据形态,数据集中均包含两种形态下的全部信息,区别在于数据呈现的方式。 本文是对reshape命令的介绍,力图通过10个示例全面介绍该命令的使用方...
Data management: How do I convert my ICD-9 codes from a string type to a numeric type? (Added 24 February 2016) Data management: How do I check a variable for a range of diagnosis or procedure codes? (Added 24 February 2016) Data management: How do I label my diagnosis or procedu...
S458854 SXPOSE2: Stata module to transpose string and numeric variable dataset including variable names and labels byStephan Huber S458853 MHTREG: Stata module for multiple hypothesis testing controlling for FWER byAndreas Steinmayr S458852 CQUADR: Stata module to estimate Quadratic Exponential models...
fdta module to change contents of string variables fedistr module for plotting distributions after absorbing fixed effects fedit module to find and edit text file from within Stata feldti module to compare two independent coefficients of reliability ...
1、缺失值编码Change missing values to numeric values：mvencodevarlist [if] [in], mv(#|mvc=# ...
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
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...