And if there are non-numeric characters? Those observations are set to missing values. It converts string values to numeric values. If you are sure that observations with non-numeric characters are not needed, you can use the real() function with generate command. Instead, it gives you an error message when there are non-numeric characters in the variable. The destring command is useful in a sense that it does not convert data to missing observations. The following code creates a new variable numvar destring strvar, ignor("#error" "#na" "*") gen( numvar) We can specify these in the ignore option. The above tables shows that there are three non-numeric variables in our dataset. tabulate strvar if missing(real( strvar)) Suppose that the above code comes up with a list of the following non-numeric characters. Suppose that our variable strvar contains non-numeric values tabulate strvar if missing(real( strvar )) We can list all non-numeric characters using the tabulate command and the real() function. *Now destring the two variables destring price, replace ignore(",") 1.2 List all non-numeric characters See the following example: *First create a dummy data In such cases, we can use the ignore(“,”) option, which tells Stata that the given character i.e. If there are non-numeric characters in our dataset, destring command will show an error non-numeric characters foundįor example, our data might have comma separators, therefore, destring will generate the above error. *Now destring the two variables destring price, replace destring return, replace 1. Here is an example: *First create a dummy data input str15(price return) However, exceptions exist in that if you had No bad. So if you put 1 you had one bad mental health day in the past 30 day, if you put 30 all of them were. The point of the variable is to measure the number of days a person has had a bad mental health day within the last 30 days. Example: You want to determine if college students do not get an. So one of them is called MENTHLTH where it is a numeric variable. With this command, we can either generate a new variable or replace the existing one. Question: What is/are your predictor variable(s). The destring command might be the first choice for converting string variables to numeric if we have a limited number of non-numeric characters. A numerical variable is a data variable that takes on any value within a finite or infinite interval (e.g. Let’s start with the destring command first. If a numeric variable is stored as a string variable in Stata, we have several ways to convert them to numeric variables. In this post, I show how to convert string variables to numeric in Stata. Here is an example of Bucketing a numeric variable into a factor: Your old friend Dan sent you a list of 50 AAA rated bonds called AAArank, with each bond. Stata codes for event study methodology.The implied cost of capital (ICC) | GLS model | Stata | Gebhardt et al.Paid Help – Frequently Asked Questions (FAQs).
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