COMPUTE new_var=4. share | follow | answered Dec 19 '13 at 13:21. However, weeks only hold (24 * 7 =) 168 hours. Here, we make a new variable where each occurrence of an ID value after the first has a number appended to it. In the syntax below, the execute is technically unnecessary because we issue the procedural command … In SPSS syntax, placing an asterisk (*) or a forward-slash followed by an asterisk (/*) at the start of a line will turn all text on that line into a comment. Also covered is the difference between row numbers (which are a part of the spreadsheet) and ID variables (which are a part of the dataset and act as case identifiers). To create a variable called total equal to the sum of variables v1, v2, v3, and v4, the syntax is: compute total = v1+v2+v3+v4. If you recode your ages into groups and then save it as age, you lose all of your detail (all of the individual ages). The new string values cannot be longer than the defined width of the target variable. Say we'd like to convert people's monthly income into income classes. is perfectly possible. ELSE. Select File > New Project. Viewed 195 times 1. do if gender = 0. recode monthly_income (lo thru 2000 = 1)(lo thru 2400 = 2)(lo thru hi = 3) into income_class. The procedure does not have to use the newly created variable. The second day of the week is a Monday, so we want to temperature on Monday in the new variable column). RECODE famimpor (1,2 =1) (3,4 = 2). missing values doctor_rating to facilities_rating (6). To create a new string variable, declare the variable with the STRING command before specifying it on RECODE. In our first example, we show how to input string variables into a new data set. The variable length contains the length of the car in inches. This process requires you to make a new copy of your SPSS data file. Note that you can shorten the comman… If the new values are shorter than the defined width of the target variable, the values are right-padded with blanks. Examples of procedural commands are list, regression and crosstabs. A good example is to add the suffix ‘_avg‘ to the variable name to signify that it is a mean. missing values doctor_rating to facilities_rating (6). If your variables are contiguous in the file you can use the SUM command using TO to specify the variables in simple syntax. An SPSS data file contains variables, which are like columns on a spreadsheet, and observations (or cases or subjects) which are like the rows on a spreadsheet. In the first example, we use the lag function to create the new variable nvcr1, which is num1 lagged by 1. Thai / ภาษาไทย For example, CAT1 CAT2 CAT3 CAT4 CAT5 CASE 1 0.75 0.82 0.85 0.90 0.95 CASE 2 0.65 0.75 0.82 0.87 0.95 All examples use bank.sav, a short survey of bank employees. DO IF—END IF structures can be nested to any level permitted by available memory. or alternatively if(any(city,1,2,5)) filt_1 = 1. We'll now flag cases who work fulltime. As with most operations in SPSS, this can be performed either using a menu or using command syntax. [/box] So, this would create one new variable “vartotal” which would be the average of all 10 items. In the new Compute Variable window, first enter the name of the new variable to be created in the ‘Target Variable‘ box.. SPSS will not create the new variables unless we issue either the execute command or a procedural command. Remember, SPSS does not like spaces in the variable names. SPSS provides the tools to quickly create a new variable. Czech / Čeština In SPSS the command to do this is called Compute. Romanian / Română the name for the new variable to create. Re: How to square a variable in SPSS 19: Rich Ulrich: 6/27/11 4:59 PM : On Sun, 26 Jun 2011 23:26:42 -0700 (PDT), L Rapeli wrote: COMPUTE is the SPSS keyword, COMPUTE new= old*old. In SPSS, IF computes a new or existing variable document.getElementById("comment").setAttribute( "id", "a8e68aa88197fbc0c743798759a6395e" );document.getElementById("hf38fc8709").setAttribute( "id", "comment" ); A nice way to do this is using the ANY function. Before discussing SPSS missing values functions, we'll first set 6 as a user missing value for the last 5 variables by running the line of syntax below. To create a new string variable within a DO IF—END IF structure, you must first declare the variable on the STRING command. Like so, our last example shows a different route to flag fulltime working males and females using different criteria. if(gender = 0 & whours >= 36) fulltime = 1. Let’s create this new variable using the menus: Transform > Compute. I hope you found them helpful. SPSS Do If Syntax Example 2 *Different recode commands for females and males. Newvar=MEAN(X1,X2, X3, X4, X5). One problem is that all the above examples change the original values of the variable. By default new variables created in this dialog box are numeric. if(sysmis(overall)) overall = q1. Bulgarian / Български The Execution area allows you to choose how to create the new variable. how recode variable having overlapping range for gender. If I missed anything essential, please throw me a comment below. They can be nested within LOOP—END LOOP structures, and loop structures can be nested within DO IF structures. compute filt_1 = 0. This is done with the STRING command. 2. Let's flag all respondents born during the 80’s. SPSS can compute only existing string variables. SPSS String Command Commands that pass values into variables, most notably COMPUTE and IF, can be used for both existing and new numeric variables. will call up this dialog: Enter a Target Variable, i.e. Turkish / Türkçe Color-Coding This tutorial presented a brief discussion of the IF command with a couple of examples. When you sign in to comment, IBM will provide your email, first name and last name to DISQUS. the name for the new variable to create. Russian / Русский Alternatively, select Paste the syntax into the syntax window, which will have SPSS write the syntax (command language) that will create the variable whenever you choose to run the syntax command in the future. or if you are damn sure that you have a valid copy of your data set elsewhere. The Result. for a selection of cases. Type: Numeric, comma, dot, scientific notation, date, dollar, custom currency, or string. First off, RECODE only replaces (ranges of) constants -such as 0, 99 or system missing values- by other constants. Creating a New SPSS Dataset -- Variable Specification and Data Entry When you open SPSS you will see the Data Editor This shows the Data View of the editor. /*White female + COMPUTE Gender_Ethnicity=3. The SPSS file structure is similar to a spreadsheet. Serbian / srpski IF is a single line command while DO IF requires at least 3 lines: DO IF, some transformation(s) and END IF. SPSS will not create the new variables unless we issue either the execute command or a procedural command (whether or not the procedure involves the newly created variable). Next, if we'd run a histogram on weekly working hours -whours- we'd see values of 160 hours and over. Example 1: Inputting string variables into a new data set . However, “fulltime” means 40 hours for male employees and 36 hours for female employees. In the last example, we will show how to removed unwanted characters from a string variable. The Target Variable field is where you will type the new variable name such as newvar in the example above. I'm trying to write syntax in SPSS that uses the compute variable command to create a new variable that looks at 5 other scale variables and finds the minimum variable among the five with a value greater than or equal to 0.80. For example, if the ID 100355 appears twice, the new variable will have values of 100355 and 100355_1 in the corresponding rows. end if. will call up this dialog: Enter a Target Variable, i.e. 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.. EXECUTE. Let’s use the auto data for our examples. Some SPSS users may be familiar with DO IF. There are at least two ways to create a string variable in SPSS. SPSS evaluates case criteria as "true" or "false." END IF. You can include this in a compute statement or in an if statement, as you would any other variable name. You can use most basic mathematical expressions to combine variables into new variables with compute statements. All other values remain unchanged, too. EXECUTE. The … In the next example, we show how to create a string variable in an existing data set. Portuguese/Brazil/Brazil / Português/Brasil Chinese Traditional / 繁體中文 Saving a smaller datafile with only a subset of variables. So we need to use different formulas based on gender. Create ID Number in SPSS. One of the places that SPSS syntax excels at efficiency is when you’re creating new variables. Setting User Missing Values. However, they can't be used for new string variables; you must first create one or more new, empty string variables before you can pass values into them. Note, however, that RECODE becomes tedious insofar as we must correct more distinct values. In the above example, SPSS looks at a case and asks "VAR1=1 and VAR2=2: true or false?" Search Polish / polski Assume we have variable famimpor with values 1, 2, 3 and 4, measuring how important having a family is for the respondent. Newvar=MEAN(X1,X2, X3, X4, X5). Color-Coding Korean / 한국어 Please see our SPSS FAQ: What kinds of new variables can I make with the create command? Suppose we wanted to make a variable called length2 which has lengthsquared. In general, it is best to recode a variable into a different variable so that you never alter the original data and can easily access the original data if you need to make different changes later on. The COMPUTE statements are where the new variable (s) are actually computed or set. Before discussing SPSS missing values functions, we'll first set 6 as a user missing value for the last 5 variables by running the line of syntax below. This module demonstrates how to subset data based on variables (using the keep and drop subcommands on the save command) and how to subset observations using the select ifcommand. Typically, comments in SPSS syntax are color-coded with the color gray. SPSS will process the DO IF command for this case and say "VAR1=1: true" and go to the COMPUTE command so NEW_VAR=1. Must correct more distinct values a histogram on weekly working hours -whours- we 'd like to convert 's! 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