[D] range Encode string into numeric and vice versa Recode categorical variables Linearly interpolate (extrapolate) values Convert string variables to numeric variables and vice versa Change missing values to n
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 variable using regular expressions? Error messages How can I handle the mat...
Chapter 1 Getting to Know Stata 12—13 Click on the Browse button to find the Excel data that you would like to turn into a Stata data set. Once you have selected the Excel file, you can pick a particular worksheet from that file or even a particular set of cells by using the ...
preceded by a backslash because a left parenthesis, in normal regular-expression syntax, means to start a subexpression, and here we are looking for a literal left parenthesis. The backslash is used to turn any character that would otherwise be a regular-expression operator into a literal ...
The commands here are also faster than the commands provided byftools; further,gtoolscommands take a mix of string and numeric variables, which is a limitation offtools. (Note I could not get several parts offtoolsworking on the Linux server where I have access to Stata/MP; hence the IC ...
su t //分数据中有两个变量的开首字母为 t (trunk 和 turn ),所以 STATA 认为 t 为模糊的省略。 m ambiguous abbreviation /红色为错误信息 . sum tr tu //求 trunk 和 turn 变量的五数概略统计 15 chrisccb :2 命令语句 . su t* //等价于前一命令,以 t 开首的所有变量可用 t*来表示。 变量...
You can create levels based on one or more variables, and on numeric or string variables, butnoton combinations of both. Thus, you can't do something likefcollapse price, by(make foreign)because make is string and foreign is numeric. This is due to a limitation in Mata and is probably...
Recoding Variables The recode command is used to group a numeric variable into categories. Suppose for example a fertility survey has age in single years for women aged 15 to 49, and you would like to code it into 5-year age groups. You could, of course, use something like gen age5= ...
and coeditor of the Stata Journal, who in turn thanks Michael Blasnik of M. Blasnik & Associates for ideas contributed to an earlier jointly written program. Also see [D] destring — Convert string variables to numeric variables and vice versa [D] egen — Extensions to generate [D] functi...
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