Reshaping wide to long creating only one variable using arrays. data long_array; set wide; array Afaminc(96:98) faminc96 - faminc98; do year = 96 to 98; faminc = Afaminc[year]; output; end; drop faminc96-faminc98; run; proc print data=long_array; run; Obs famid year faminc 1 1 96 40000 2 1 97 40500 3 1 98 41000 4 2 96 45000 5 2 97 45400 6 2 98 45800 7 3 96 75000 8 3 97 76000 9 3 98 77000

1. Transposing one group of variables. For a data set in wide format such as the one below, we can reshape it into long format using proc transpose.From the first output of proc print, we see that the data now is in long format except that we don’t have a numeric variable indicating year; instead; we have a character variable that has information on year in it.

It also shows how PROC SQL can be used to find information The third ARRAY statement defines an array called NET_INC. A variable list is not provided for this array, so SAS adds a suffix from 1–12 to the array name to associate the variables Net_Inc1–Net_Inc12 with the array. These variables do not exist in the Rev_Exp data set, so they are created as new variables in the DATA step. PROC TRANSPOSE is an extremely powerful tool for making long files wide, and wide files less wide or long, but getting it to do what you need often involves a lot of time, effort, and a substantial knowledge of SAS® functions and data step processing. Prior to joining the SAS Irvine office in 1988, Jim was an instructor at Ventura College and a SAS programmer at The Medstat Group in Santa Barbara.

Sas long to wide array

The following will illustrate how to reshape data from wide to long using the data step. I have a SAS dataset, with the following variables: ID, Var1_0, Var1_3, Var1_6, Var2_0, Var2_3, Var2_6, which can be read like this: Var1_0 is parameter 1 at time 0. Re: Array for transposing data from wide to long form Posted 02-11-2017 09:24 PM (1994 views) | In reply to simkinm2 Since the composite of the varnames is going to be a constant, then you can include this code, which calculates it just once: Why were three steps needed? PROC TRANSPOSE was designed to either make a long file wide, or a wide file long. That is, either put all of the variables on one record for each by variable, or create one record for every combination of the by variable, the id variable, any variables to be copied, and only one of the to-be-transposed var Prior to joining the SAS Irvine office in 1988, Jim was an instructor at Ventura College and a SAS programmer at The Medstat Group in Santa Barbara. Jim's areas of specialization include the DATA step, application development, web enablement, and the SAS macro language.

Do you get data that are “short and wide”? Such data sets have one observation per subject and multiple time points and variables within one row. Jennifer Wa Arrays in the SAS language are different from arrays in many other languages.

• The array name itself is temporary and so is not available outside the data step. However, the variables the array represents are not temporary and so can be used in procedures and other data steps. • If you reference an array with a non-integer index, SAS will truncate the index to an integer before doing the array lookup.

SAS only processes one line at a time and arrays are only shortcuts to variables. This solution depends on you knowing the structure of the data, at which point you may as well type out the new dataset. In this case it is significantly more efficient to use a PROC TRANSPOSE rather than an array method. – Reeza Apr 9 '17 at 20:18 2019-06-03 · You can use PROC TRANSPOSE or the SAS DATA step to convert the data from wide form to long form.

1 SAS #SASGF ® GLOBAL FORUM 2020 Paper 4419-2020 A Beginner’s Guide to Using ARRAYs and DO Loops Jennifer L. Waller, Augusta University, Augusta, GA ABSTRACT If you are copying and pasting code over and over to perform the same operation on

of regular expressions and entity resolution within the SAS programming language for a wide array of everyday applications of unstructured data analyses. Re: Long to wide Array Posted 05-14-2014 12:14 PM (1321 views) | In reply to ballardw I will need it in heat map type of report eventually (if that possible in sas) but my knowledge of sas has not made it there yet. In reshaping the data from long to wide, we will create six new variables: faminc96, faminc97, faminc98, spend96, spend97 and spend98. The six variables are listed on both the keep and the retain statements. Following the same logic as in the previous example, we include an array statement to define the variables spend96, spend97 and spend98. SHAPING DATA LONG TO WIDE: Transposing with Arrays (Cont’d) data cardsbyaccount_array_1; instructs SAS to create all N records Reshaping data wide to long using a data step | SAS Learning Modules There are several ways to reshape data.

In this example a number of variables a non-indexed array. All arrays are set up and accessed only within a DATA step. The syntax for an indexed array is as follows: ARRAY arrayname {n} [$] [length] list_of_array_elements; where ARRAY is a SAS keyword that specifies that an array is being defined arrayname a valid SAS name that is not a variable name in the data set. 2014-09-21 · 3 proc transpose in SAS for long and wide format conversion data samp; input row subject $ treatment $ pc20; cards; 1 1 R1 3.23515672 2 1 R2 4.14426184 3 1 R3 5.85422186 4 1 T 4.40670538 5 2 R1 -0.04801373 6 2 R2 3.47731900 7 2 R3 2.88554550 8 2 T 2.44074469 Arrays in SAS are very different from arrays in other programming languages. In other languages, arrays are used to reference multiple locations in memory where values are stored.
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This tutorial explains how to reshape data by converting multiple variables from long format to wide format. This tutorial explores 'Double Transpose' SAS method which is used to transpose multiple variables. It's a very handy technique to solve this challenge. Otherwise, it would be a … Learn how to turn a wide format dataset into a long format dataset in SAS using data steps.

DO i=1 to 4; Going from wide to long is just the reverse.
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1 Paper 3115-2019 A Beginners Guide to ARRAYs and DO Loops Jennifer L. Waller, Augusta University, Augusta, GA ABSTRACT If you are copying and pasting code over and over to perform the same operation on multiple variables in

PH290: Introduction to Data Management and Programming in SAS for Public Health Spring 2021 Lecture posted by Friday The instructions were written based on the SAS 9.4 (64-bit) software package, version 5 of the AFCARS Foster Care FY2011 data file, and Version 1 of the NYTD Outcomes File FY2011.

Prior to joining the SAS Irvine office in 1988, Jim was an instructor at Ventura College and a SAS programmer at The Medstat Group in Santa Barbara. Jim's areas of specialization include the DATA step, application development, web enablement, and the SAS macro language. A native of Southern California, Jim enjoys anything in the warm California

In reshaping the data from long to wide, we will create six new variables: faminc96, faminc97, faminc98, spend96, spend97 and spend98. The six variables are listed on both the keep and the retain statements. Following the same logic as in the previous example, we include an array statement to define the variables spend96, spend97 and spend98.

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