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.
PROC TRANSPOSE: Long-to-Wide. First, we will show how to transpose a SAS data set from long to wide, i.e. rows to columns. Example 1: The PROC TRANSPOSE Options. In this first example, we will reshape the data shown below.
You need to figure out a way to convert usage_type into a number that corresponds to variable location in the array. 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. 2. Transposing with Arrays proc means data=test_firstlast1 noprint missing; var total_count; output out=max_obs (drop=_FREQ_ _TYPE_) max=max_total_count run; data _null_ set max_obs; call symput (‘N’ ,Trim(Left(max_total_count))); run; 17 Call symput adds leading blanks to a macro, Trim and Left are used to remove them Below is an example of using SAS proc transpose to reshape the data from a long to a wide format. data long1 ; input famid year faminc ; cards ; 1 96 40000 1 97 40500 1 98 41000 2 96 45000 2 97 45400 2 98 45800 3 96 75000 3 97 76000 3 98 77000 ; run; proc transpose data=long1 out=wide1 prefix=faminc; by famid ; id year; var faminc; run; proc Transpose steps like this are easily done with the array statement.
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– 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. When the data are in the long format, you use a single SERIES statement and the GROUP=VarName option to plot the three groups of lines. 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. Learn how to turn a wide format dataset into a long format dataset in SAS using data steps.
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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. 2. Transposing with Arrays proc means data=test_firstlast1 noprint missing; var total_count; output out=max_obs (drop=_FREQ_ _TYPE_) max=max_total_count run; data _null_ set max_obs; call symput (‘N’ ,Trim(Left(max_total_count))); run; 17 Call symput adds leading blanks to a macro, Trim and Left are used to remove them Below is an example of using SAS proc transpose to reshape the data from a long to a wide format.
In this program we want SAS to remember, as it reads say record 3, that it already counted records 1 & 2 in the variable ‘ntimes’ and to remember the two scores that we loaded into the 1st & 2nd elements ofthe array. So we say: retain ntimes s1-s5; We can change the values, but SAS …
Syntax – PROC TRANSPOSE During each iteration, SAS uses the name of the array and the value of I to reference a specific element or variable in each array.
A SAS array is simply a convenient way of temporarily identifying a group of variables. It is not a data structure, and array-name is not a variable. An ARRAY statement defines an array. This tutorial explains how to reshape data by converting multiple variables from long format to wide format.
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22 Jan 2007 SAS remains a popular and powerful tool for data management and the following to your code. data wide; set long; array ages(4) age1-age4; 22 May 1996 Arrays. SAS also provides a querying language called SQL which can perform table lookup but Define a temporary array to hold the district wide median scores: three categories: small, medium, or large (coded 1, 2, o 24 Jan 2008 ARRAYS. 12.
The SASHELP.APPLIANC dataset contains sales data for 24 appliances across 156 different sales cycles. Do you get data that are “short and wide”?
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In this example, we will transpose the tallgrades dataset from long to wide format by using a DATA step. This will require the use of an array and both the
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.
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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. In SAS, arrays may be used for this purpose (temporary arrays), but they also may be used to refer to lists of variables (the most common use of arrays in SAS).
To reshape a wide data set long, you have to specify reshape long. After that you specify the word kernel that the multiple columns we want to reshape have in common. In our case that’s “day” (day1, day2, day3). For long-to-wide datasets, there is usually one variable in the VAR statement.