Creating and recoding variables | Stata Learning Modules. This module shows how to create and recode variables. In Stata you can create new variables with generate and you can modify the values of an existing variable with replace and with recode. Computing new variables using generate and replace. Generate and Replace. You create a new variable in Stata using the generate command, usually abbreviated gen. You can change the value of an existing variable using replace. Since replace can destroy data, it has no abbreviation. The basic syntax is the same for both commands: gen variable = something replace variable = something. generate— Create or change contents of variable 3 When we use replace, we are informed of the number of actual changes made to the dataset. You can explicitly specify the storage type of the new variable being created by putting the type, such as byte, int, long, float, double, or str8, in front of the variable name. For example.

Gen new var stata

[This chapter shows the basics of creating and modifying variables in Stata. The most basic form for creating new variables is generate newvar = exp, where. Following are examples of how to create new variables in Stata using the gen (short for generate) and egen commands: To create a new variable (for example, total) from the transformation of existing variables (for example, the sum of v1, v2, v3, and v4), use: The egen command. In this article you'll learn how to create new variables and change existing You create a new variable in Stata using the generate command. For once, let me start with a general formulation of the syntax: generate newvar = expression. "Expression" can be a mathematical argument. This module shows how to create and recode variables. In Stata you can create new variables with generate and you can modify the values of an existing. Here we use the -generate- command to create a new variable representing population younger than Dear members, I want to generate variable X if spending variable Y if spending is between and and variable Z if spending is. There's a limit of 2, variables in Stata/IC, 32, in Stata/SE, and , in .. Stata commands for creating new variables are generate/replace and recode . | ] Gen new var stata generate— Create or change contents of variable 3 When we use replace, we are informed of the number of actual changes made to the dataset. You can explicitly specify the storage type of the new variable being created by putting the type, such as byte, int, long, float, double, or str8, in front of the variable name. For example. 6[GSM] 11 Creating new variables generate with string variables Stata is smart. When you generate a variable and the expression evaluates to a string, Stata creates a string variable with a storage type as long as necessary, and no longer than that. where is a str1 in the following example. list make foreign make foreign 1. VW Rabbit foreign 2. Create a new variable based on existing data in Stata. Following are examples of how to create new variables in Stata using the gen (short for generate) and egen commands. To create a new variable (for example, newvar) and set its value to 0, use. The second problem is that you created the variable asset_group to be a numerical variable; now, if you are trying to replace its contents with a string instead of a number, Stata will tell you the variable type does not match. To avoid this, it would be better to create the new variable as empty string variable. Creating and recoding variables | Stata Learning Modules This module shows how to create and recode variables. In Stata you can create new variables with generate and you can modify the values of an existing variable with replace and with recode. foreach var of varlist inc1-inc12 { generate tax`var' = `var' * } 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. Thanks Pearly. The problem is there are still missing values in the new var even when at least one observation is not missing. For example, if X is missing I want the new var to run the function for the values in Y and Z and produce a value instead of considering it missing. New var should only have missing values when all three X Y Z are missing. This post demonstrates how to create new variables, recode existing variables and label variables and values of variables. We use variables of the automobiledeals.net data come with Stata as examples.-generate-: create variables. Here we use the -generate- command to create a new variable representing population younger than 18 years old. Stata: Using generate to create new variables 06 Jul Tags: Stata and Tutorial Generating New Variables. The primary method for creating new variables in Stata is the generate command. Load the auto dataset. Stata for Students: Creating Variables and Labels. This article is part of the Stata for Students series. If you are new to Stata we strongly recommend reading all the articles in the Stata Basics section. In this article you'll learn how to create new variables and change existing variables. I'm attempting to write a foreach loop in Stata that will automatically generate log transformations of all continuous variables in the dataset (exclude strings, binary variables). The code I have tried, which doesn't seem to work is as follows: qui foreach v of varlist _all { gen 'v' = log(v) }. name, and the list exists in Stata but it is not assigned to the variable until we specify a label value statement. These five steps relate to generation of a new variable, and should be preceded by a summary of the old variable, and followed by a comparison with the new variable to make sure you did not make a coding mistake. 3. automobiledeals.net file. Dummy Variables using the gen command in Stata FHSSResearchSupport. Introduction to Stata - Generating variables using the generate, CREATING NEW VARIABLES AND LABELS - Duration. Stata by and egen commands. by and bysort. Many Stata commands can be executed on a group-by-group basis. Earlier we looked at how the Stata by command can be used as a prefix for statistical commands (see help by). For example the following Stata code will execute the summarize command for each unique value of marital (married, widowed, etc.). This video introduces the programming concepts and syntax for creating new variables. The Stata commands covered include generate, replace, recode, label define, label values, label variable, and. Working with Dates in Stata. Stata has many tools for working with dates. This article will introduce you to some of the most useful and easy to use features. A Stata date is simply a number, but with the %td format applied Stata will interpret that number as "number of days since January 1, " You can then use that number in a variety of ways. gen new_var = 5 – create a new variable and set its value. replace new_var = 4 – update the value of an existing variable. replace new_var = 3 if other_var == 2 – update the value of an existing variable, for observations that meet certain criteria.

GEN NEW VAR STATA

Data management: How to create a categorical variable from a continuous variable
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