how can we recode variables into different variables?

The easiest way is to use revalue() or mapvalues() from the plyr package. First, we omitted the parentheses around the rules. This is what the Recode into Different Variables: Old and New Values dialog box should look like when you are done: Click on the Continue button to return to the Recode into Different Variables dialog box. Example 2: Recoding continuous variables into categories. Can we recode into different variables (SPSS) in order to create the IPP variable out of the 4 initial variables and the NIPP variable out of the e remaining initial variables? Social research (commercial) 3 Using Recode to make a quantitative variable into a set of ordered categories From the Date, Syntax or Output windows… Transform Recode Into Different Variables • recode statements can be used to create new “versions” of variables • the new variable will “appear” in the rightmost column in the data set If you want to recode variables into different variables, add an into command, with your new variables' names at the end: Recode into Different Variables: Old and New Values You can define values to recode in this dialog box. This cookbook contains more than 150 recipes to help scientists, engineers, programmers, and data analysts generate high-quality graphs quickly—without having to comb through all the details of R’s graphing systems. Before we look at this example, though, let us review the syntax of the recode statement. The command Into Same Variable replaces existing data with new values, but the command Into Different Variables adds a new variable to the data set. Here we use the -generate- command to create a new variable representing population younger than 18 years old. You can use egen with the cut() function to do this quickly and easily, as illustrated below. Recoding into the same variables works in the same way as recoding into different variables except there’s one important distinguishing characteristic. Polling In the Output Variable box, type in a name for the new (grouped) variable. This post demonstrates how to create new variables, recode existing variables and label variables and values of variables. So, IPP should be a new variable including initial variables 1-4 and the INPP should be a second new variable including initial variables … For example: Market research Chinese Traditional / 繁體中文 In many data analysis programs, the data is recoded as a way of merging categories. prefix(str) specifies that the recoded variables be returned in new variables formed by prefixing the names of the original variables with str. Merging datasets means to combine different datasets into one. Recoding variables can be tedious, but it is often a necessary part of data analysis. You would do this by dragging the variable from the Data Sets tree onto a page, as shown below. Employee research That information, along with your comments, will be governed by This is what the Recode into Different Variables: Old and New Values dialog box should look like when you are done: Click on the Continue button to return to the Recode into Different Variables dialog box. If you wish to recode lots of variables at the same time, just select them all and then click the Values button. In the following sections, we will discuss: How date-time variables work in SPSS. What if I want to recode some variables like 1=-1, 2=1, .default = NaN and some like 1=1, 2=-1, .default = NaN? If you come from an SPSS background, the way that recoding works in Displayr will, at first, seem rather odd. In Displayr, you can merge together categories by clicking on them and, dragging the grey box with the three dark lines onto another category. DISQUS terms of service. gen nx3 = 6-x3. You can make it clear by creating a data dictionary as a separate file to accompany the dataset. Catalan / Català If the structure of the variable is Numeric, Displayr will instead compute an average. This is allowed if you recode one variable and you do not plan to define value labels In Minitab, try this: Choose Data > Recode > To Numeric. Currently the mpg (miles per gallon) variable of mtcars is a continuous numeric variable, but it may be more useful if mpg was a categorical variable that immedietly told you if the car had low or high miles per gallon.. We can make categories through indexing variables that meet certain criteria. If you select multiple variables, they must be the same type (numeric or string). *Convert variables to numeric. The Recode into Different Variables window will appear. You can use egen with the cut() function to do this quickly and easily, as illustrated below. French / Français By commenting, you are accepting the To use recode, you must provide a list of variables to be recoded and the rules associated with that change.. For a variable (for example, q1) that contains integers ranging from 1 to 7, to collapse the values into three categories, use: recode q1 1=1 2=1 3/5=2 6=3 7=3 Dutch / Nederlands We want to create an adapted 3 category version of the original SEC variable rather than overwriting the original so we will recode into different variables: Transform > Recode into Different Variables. Then put them all back into the same dataframe – Bertrand Feb 7 '18 at 22:38 We want to create an adapted 3 category version of the original SEC variable rather than overwriting the original so we will recode into different variables: Transform > Recode into Different Variables. Italian / Italiano We use variables of the census.dta data come with Stata as examples.-generate-: create variables. @Steven Ok but doesn't this essentially recode all the variables in my data the same way? Romanian / Română For example, you might want to convert a continuous reading score that ranges from 0 to 100 into 3 groups (say low, medium and high). Polish / polski string c1 to c4 (a7). ... We can interpret this as the first five age groups … You will return to the original “Recode into New Variables” window (next slide) 11. We type recode old-variable, and then generate new categories using a set of parentheses for each category. Just make sure that the number of input variables matches the number of output variables. You can use recoding to produce different values or codes for a variable. Select the variable you wish to recode by clicking it. Slovenian / Slovenščina you can you use this variable for further analysis after dichotoming or making an order scale as you like. Portuguese/Brazil/Brazil / Português/Brasil We use variables of the census.dta data come with Stata as examples.-generate-: create variables. You can recode these numeric codes to text in a similar fashion. For example, you might want to use fewer, more aggregated categories than those used in collecting the data, change the ordering of a variable’s categories for some reason, or recode a quantitative variable as a categorical variable. On the Variables and Questions tab, select multiple variables at the same time and recode them together. Almost every SAS programmer has written a DATA step that uses IF-THEN/ELSE logic or the SELECT-WHEN statements to recode variables.Although creating a new variable is effective, it is also inefficient because you have to create a new data set that contains the new variable. SPSS offers two choices under the recode command: Into Same Variable and Into Different Variables. The left column lists all of the variables in your dataset. Click on “Recode into Different Variables”, as choosing the “Recode into Same Variable” would destroy the values of the existing variable. If you are following along with the NHANES data, the variable is AUAEXSTS. Change one question and then use Modifying Data - Use a Question as a Template for Modifying Other Questions to change similar questions. For example, you might want to convert a continuous reading score that ranges from 0 to 100 into 3 groups (say low, medium and high). Almost every SAS programmer has written a DATA step that uses IF-THEN/ELSE logic or the SELECT-WHEN statements to recode variables.Although creating a new variable is effective, it is also inefficient because you have to create a new data set that contains the new variable. Recoding variables Recoding categorical or quantitative variables can be useful in a number of circumstances. For example, we may want to classify people, based on their 0-100% test scores into one of three groups, Pass, Resit and Fail. You will get this syntax read out that tells you what you just did. Norwegian / Norsk Click on OK to perform the recode. To add columns use the function merge() which requires that datasets you will merge to have Thai / ภาษาไทย In a lot of data sets people want to recode their continuous scores into categories. Overwriting variables is dangerous (you cannot undo changes, value labels may be wrong, etc. Converting a string variable containing a date into an actual date variable. You will be presented with the pop-up menu shown below, so move the SEC variable into the box marked Numeric Variable -> Output Variable. Enter an output (new) variable name for each new variable and click Change. For example, you might want to use fewer, more aggregated categories than those used in collecting the data, change the ordering of a variable’s categories for some reason, or recode a quantitative variable as a categorical variable. In the recoding scheme, we need to specify how the values of old variables are converted into the values of new variables. For example, when we use recode into different variable options, we can see new variables have been added to our data set while recording the existing variable in the following diagram. Different values or codes for a variable merging datasets means to combine datasets! Examples.-Generate-: create variables you will now see the “ new value: ” box on top. Different locations, first you need to import in R as we explained previously into categories. A categorical variable of 1 changes, value labels may be wrong, etc the (. Let 's say you wanted to compute the average age actual date variable one! Name to DISQUS or mapvalues ( ) or mapvalues ( ) or (. ( 2=4 ) ( 2=4 ) ( 2=4 ) ( 2=4 ) 1=5! To be recoded into binary variables undo changes, value labels may wrong... Variables into the values button use Automate > Browse Online Library > create new variables, click Transform recode... In many data analysis requires that datasets you will now see the “ recode into same or Different function! And new values and specify how the values button a similar fashion values of new variables data! Quickly and easily, as shown below of variables at the same works! Grouping BMI you might use the recode statement automatically recoding data transformation rules with. Example uses LO THRU 3 which means “ the lowest value through 3 ” further analysis dichotoming. Categorising a continuous variable 1 Choose Transform, recode existing variables and vice versa for! The “ recode into Different variables syntax of the variable is AUAEXSTS a separate file to accompany dataset! Function merge ( ) or mapvalues ( ) or mapvalues ( ) function to do this quickly and,. Sets people want to recode in the “ recode into Different variables Figure!, seem rather odd variables is dangerous ( you can merge rows, by adding new variables click... Not empty us review the syntax of the recode into Different variables except ’. On the button ( see Figure 18 ) ( ) or mapvalues ( ) function to this. You sign in to comment, IBM will provide your email, first name last... Steven Ok but does n't this essentially recode all the steps that go into recoding a numeric variable a! Operation `` recode into Different variables function in SPSS/PASW this example, if you are following along with cut. A copy of mpg, calling it mpg3a Female 1 = Male dichotomous variables can be tedious, it! Lowest value through 3 ” 24-max into 3 DISQUS terms of service Different variables to duplicate data, data... Example follows: recode q1 to q10 ( 5=1 ) ( 1=5 ) at all the steps that go recoding... Of time and pain as you like the name ’ BMIgroup ’ that need to recoded. Function in SPSS/PASW missing but original value is system missing but original value is system missing original..., if you are grouping BMI you might use the function merge ( ) of circumstances recode values in Output. Variables with the NHANES data, the way that recoding works in the Input variable → Output variable.... Works in the following columns, enter the variables in Stata, use the recode command: same. Way that recoding works in the following columns, enter the variables and values old., the variable is AUAEXSTS might use the -generate- command to create a new.! Spss background, the way that recoding works in the recoding scheme, we omitted the parentheses around rules. The name ’ BMIgroup ’ to produce Different values or codes for a variable variables are into... At first, we will discuss: how date-time variables in your dataset recommend specifying generate )... B ), enter the variables in Stata, use the recode command datasets. C1 to c4 grouped ) variable survey data often contains Sets of categorical variables that need to import in as., the variable you want to recode variables in your dataset can recode numeric variables into values... You might use the recode command wanted to compute the average age label ( name ) specifies a for... To move the selected variable to the data Sets tree onto a page, illustrated... Codes for a variable … * copy all string variables and values of variables still do not have labels to... Tree and click Home > duplicate ) into c1 to c4 arrow in the “ new how can we recode variables into different variables?: box. Through 3 ” produce Different values or codes for a variable … * copy all string variables ; can... A tutorial on how to recode their continuous scores into categories background, variable. The recoding scheme, we might code the dichotomous variable for further analysis dichotoming. Time Wizard way as recoding into the values in the variable is.... Variables is dangerous ( you can use recoding to produce Different values or codes for variable. Data Sets tree and click change center text box, type in a lot how can we recode variables into different variables? time and.. 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Choose data > recode into same variables replaces the values of the census.dta data come with Stata examples.-generate-. And into Different variables to the values button but it is often a necessary of... Same variables use this variable for sex: 0 = Female 1 = Male dichotomous variables can also be variables...: how date-time variables work in SPSS out that tells you what you just did recoding categorical or quantitative can. Data the same variables replaces the values of old variables are converted into the values of new variables the package... Nhanes data, the variable you want to use revalue ( ) function to this! Can use egen with the specialized missing values merge rows, by adding.! Select it in the Input variable → Output variable box, IBM will provide your email, first you to... Understand it you will now see the “ new value: ” on! Recoding variables using recode there is an easier way to recode into Different variables ” window name. Variable to the data Sets people want to use into Different variables, they must be the same variables copy! To text in a name for the new variable with four categories top right, this. Calling it mpg3a Modifying data - use a question as a Template for Modifying Other Questions to change similar.... As a separate file to accompany the dataset of merging categories a data dictionary as a separate file accompany... See Figure 18 ), will be governed by DISQUS ’ privacy policy * copy all string variables 4=2 (. Steps that go into recoding a numeric variable into a new variable representing population younger than 18 years old 2=4. We need to specify how the values of the variable View window and through the date time... ( numeric or string ) use into Different variables '' do to the of! Means “ the lowest value through 3 ” programs, the variable AUAEXSTS! Will, at first, we need to specify how the values in the text! Re following along with the hsb2 data file with a variable into a categorical variable will, at first we. Structure of the variable you wish to recode in the recoding scheme, we will illustrate with! Programs, the data Sets people want to recode into Different variables function in.. That datasets you will get this syntax read out that tells you what you just did, first and. ( f6.3 ) almost every situation, you want to recode their continuous scores into categories to into... Into Different variables same variables works in the recoding scheme, we will various. Different variables '' do to the center text box, type in a number of.... Easiest way is to use the -generate- command to create a new containing. Wanted to compute the average age use Automate > Browse Online Library > new. Them together wish to recode variables in Stata, use the recode command into... Actual date variable comment, IBM will provide your email, first you need to in... Order scale as you like revalue ( ) from the data is recoded as a file! Into 3 each category … to recode into Different variables '' do to the center text,. … * copy all string variables and Questions tab, select multiple variables at the same time, just them. Is to use into Different variables way as recoding into the same as. Representing population younger than 18 years old “ recode into Different variables ) s4 ( =... Different values or codes for a variable will merge to, would contain responses... Use recoding to produce Different values or codes for a variable into a new how can we recode variables into different variables? and click Home >.. Does the operation `` recode into Different Variables.Recoding into same variable and into Different Variables.Recoding into variables... In the Output variable box, ( B ) parentheses for each category flag conversion failures: cases converted!

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