foreach repeatedly sets local macro lname to each element of the list and executes the commands enclosed in braces. The loop is executed zero or more times; it is executed zero times if the list is null or empty.

What are Stata Forvalues?

forvalues repeatedly sets local macro lname to each element of range and executes the commands enclosed in braces. The loop is executed zero or more times. Remarks and examples. stata.com. forvalues is the fastest way to execute a block of code for different numeric values of lname.

Can you do for loops in Stata?

The two most common commands to begin a loop are foreach and forvalues. The foreach command loops through a list while the forvalues loops through numbers. The first line of the code above is very similar to how you would create a macro.

What is DI in Stata?

In Stata these are called respectively _N and _n. For more see this entry on the ATS website. There is however one exception: _n within the display command (often abbreviated as di) means: “display a new line” instead of “current observation number”.

Can Stata try all values of a variable in foreach?

Is there a way to tell Stata to try all values of a particular variable in a foreach statement without specifying them? foreach offers a way of repeating one or more Stata commands; see also [P] foreach. One common pattern is to cycle through all values of a classifying variable.

What does the -local- command do in Stata?

The -local- command is a way of defining macro in Stata. A Stata macro can contain multiple elements; it has a name and contents. Consider the following two examples:

How to cycle through the variables in a varlist in Stata?

foreach var of varlist inc1-inc12 { generate tax`var’ = `var’ *.10 } The initial foreach statement tells Stata that we want to cycle through the variables inc1 to inc12 using the statements that are surrounded by the curly braces.

What is a level in Stata 8?

The command levelsof is used to produce a list of the distinct values in a variable, which can be particularly useful when the variable is integer-valued or string-valued. (The corresponding Stata 8 command is levels .) and also leaves behind those values in r (levels).