How to reshape data wide to long using proc transpose sas. Proc transpose russell lavery, independent consultant abstract if one can think about a sas data set as being made up of columns and rows one can say proc transpose flips the columns of data into rows of data and the reverse. How to reshape data long to wide using proc transpose. For such a small data set, i would suggest coding it yourself. This paper, written for data analysts, discusses techniques to power up amplify the effectiveness of your reporting. Getting your data in shape with proc transpose nancy brucken, pharmaneti3, ann arbor, mi. Transposing data using proc transpose sas tutorials. Hello, below is my proc transpose logic however some of the records in my output is showing blank. In this case, either a proc freq or better proc tabulate would do this directly, and if you want a dataset you can get that with ods output. You can also print the contents of the output data set by using the contents statement in the. You can use the out option to specify a new name for the output data set. This sas software tutorial shows how to use proc transpose to transpose a datasets rows and columns, and. Proc contents output see output 5 below shows that the new lengths of the variables match the longest value from the raw data. Procedure concepts 20 output delivery system 33 chapter 3 statements with the same function in multiple procedures 35.
Proc transpose is a powerful yet underutilized proc in the base sas toolset. Details because the copy statement copies variables directly to the output data set, the number of observations in the output data set is equal to the number of observations in the input data set. Using proc sql in sas to transpose a table from long to wide. The limit is you have to find out of distinct values of the transposed variable and create new variables for those. Rotated1 created by proc transpose produces report 2. Proc transpose transposes the observation that contains the last occurrence of a particular id value within the data set or by group. Transposing data using proc transpose search this guide search. The original variables all had comma sas formats note. The proc transpose is part of the sas language that does not get used as much. Proc transpose will be deconstructed into three simple movements. I dont think you will be able to go directly to your desired output using proc transpose since you are looking to get each category to span multiple levels. Sas proc transpose and output to excel stack overflow. Ods output in result viewer this is the table i actually want to use futher to merge with other variables, but sas file created in explorer along with this output, looks like this.
In the final dataset, i only want to keep observations for subjects who were there for the 5 years. For reference here and use later, we store the names in character variable origvar. In the first transpose of the above code, we are telling sas to store information of all the variables in a single variable and the respective values in the another variable. Data transposition with proc report midwest sas users group. Proc transpose oder doityourself 1 einleitung saswiki. This guide contains written and illustrated tutorials for the statistical software sas. Copies variables directly from the input data set to the output data set without. Its a very powerful procedure when you need to change the shape of the data.
This paper presents an easy beforeandafter approach to learning proc transpose. You can also print the contents of the output data set by using the contents statement in the datasets procedure. Transposing statistics from proc means sas support. For each by group in the original data set, proc transpose creates four observations, one for each variable that it is transposing. Programmers who have a hard time fully grasping proc transpose will benefit from this paper. First off, if youre in sas i would recommend using sas tools. If the value of any id variable is missing, then proc transpose writes a warning message to. This tutorial explains the basic and intermediate applications of proc transpose with examples. First, lets see what happens when you use proc transpose on sashelp. Power up your reporting using the sas output delivery system. Below is an example of using sas proc transpose to reshape the data from a long to a wide format. Is there an efficient way of transposing huge table in sas. How can i generate pdf and html files for my sas output. If youve ever had to rearrange a transposed sas dataset, converting it from being a wide dataset back to.
Apr 06, 2020 when you use a numeric variable as an id variable, proc transpose changes the formatted id value into a valid sas name. To see the effect of the idlabel statement, print the output data set with the print procedure by using the label option. From the first output of proc print, we see that the data now is in long format except that we dont have a numeric variable indicating year. Proc transpose doesnt have all of the capabilities of proc transpose as it was designed for just one purpose. I guess a datastep will always be more efficient then proc transpose on big data. The output from proc means is one row and three columns, so i use proc transpose to convert. If output dataset does not exist, then proc transpose creates it by using the data n naming. It contains three sample sas input files, a set of basic. How to keep multiple formats in one variable after transpose. After running my codes sas ods generate very nice output which looks like this. With the source variables in saledat3 having mixed formats, the resulting rows in the output data sets would have to have different formats.
Posted unexpected output from proc npar1way on new sas user. Id move to column name it allows you to include the values of a variable as variable names in the output data set. Counting number of ovservations with proc transpose. We will be using a data step to take in our dataset, restructure it, and output the same data, but in a different shape. Before the proc reg, we first sort the data by race and then open a. Sas proc transpose without needing to sort the data. The following is a a stepbystep tutorial on proc transpose basics, and b a quick reference sheet to which you can. A transposed variable is a variable the procedure creates by transposing the values of an observation in the input data set into values of a variable in the output data set. Shoes is the original input dataset specified using data and work. The procedure pads the output data set with missing values if the number of observations in the input data set and the. Because the copy statement copies variables directly to the output data set, the number of observations in the output data set is equal to the number of observations in the input data set. The transpose procedure always produces an output data set, regardless of whether you specify the out option in the proc transpose statement.
Proc transpose is an extremely powerful tool for making long files wide, and wide files less wide or. Proc transpose statement specifies the input and output data sets and lets you provide optional values for naming and labeling the output data set. How to keep multiple formats in one variable after transpose mindy wang abstract. Below, we run a regression model separately for each of the four race categories in our data. Transposing from interleaved to standard time series form the following statements transpose part of the interleaved form output data set foreout, produced by proc forecast in a previous example, to a standard form time series data set. Proc transpose variations, and their output results. These techniques use sas output deliver system ods destinations especially the ods. You cannot use proc transpose with an id statement or a by statement with an engine that supports concurrent access if another user is updating the data set at the same time. Refer to the sas procedures guide for more information on proc transpose. I believe you can do this directly from either one, but it has been years since i used these. The variables in the by and copy statements are not transposed. For each by group in the original data set, proc transpose creates four observations, one for. Proc transpose transposes only the numeric variables, test1, test2, and final, because no var statement appears and none of the numeric variables appear in another statement. Then print the output file to excel using ods tagsets.
How to keep multiple formats in one variable after transpose mindy wang abstract in clinical trials and many other research fields, proc transpose are used very often. The proc transpose statement tells sas to execute the transpose procedure on an. Proc transpose statement creates an output data set by restructuring the values in a sas data set, transposing selected variables into observations. The formatting of the numeric data leaves something to be desired, and the reason for this awkward appearing output is as follows. The following data set is the output data set, fishlength. To create a transposed variable, the procedure transposes the values of an observation in the input data set into values of a variable in the output data set. There is a summary sheet at the end of the paper as well for later reference. It contains three sample sas input files, a set of basic proc transpose variations, and their output results. If outputdataset does not exist, then proc transpose creates it by using the data n naming convention. Proc transpose rearranges columns and rows of sas datasets, but. Proc transpose rearranges columns and rows of sas datasets, but its documentation and behavior can be difficult to comprehend. This sas software tutorial shows how to use proc transpose to transpose a datasets rows and columns, and discusses when to use a transpose.
Proc transpose vs arrays vs proc summary mike zdeb, university at albany school of public health, rensselaer, ny abstract when data for the same entity person, place, thing are stored across multiple observations, it is a common task to place all the data for a given entity into a single observation. Notice that the option prefix faminc specifies a prefix to use in constructing names for transposed variables in the output data set. Taming the proc transpose matt taylor, carolina analytical consulting, llc abstract the proc transpose is often misunderstood and seldom used. If the id variable is numeric, the names of the output. Proc transpose contd proc transpose needs prior sorting but will create the necessary number of columns to accommodate all records being transposed proc transpose cannot transpose several variables into one row, instead they have to be transposed one by one 16. For a data set in wide format such as the one below, we can reshape it into long format using proc transpose. If output dataset does not exist, then proc transpose creates it by using the data n naming convention.
Transpose proc means results sas support communities. Dec 12, 2019 hi, i would greatly appreciate if someone could help me with the sas code to solve this problem in dataset 2. The main problem lies with the proc transpose in dataset 2. Use proc print, proc report, or some other sas reporting tool to print the output data set. A proc print of the resulting rotated3 is shown below as report 4.
Sas variable names cannot begin with a number unless you have set validvarnameany. When i output proc means output to a dataset only n min max mean and std comes out. First step, it is required to sort the variables id time before using them in by statement in proc transpose. Yet, proc transpose will usually deliver your output with far less programming time than the data step approach. Organize the output data set into by groups, and populate each by group with untransposed values. The output dataset resulting from running proc transpose on example 3 could be corrected by running an extra datastep that included a retain, length, or format statement before the set statement, thus reordering the variables in. For example, you have data in vertical long format and you are asked to change it to horizontal wide format. To create transposed variable, the procedure transposes the values of an observation in the input data set into values of a variable in the output data set. The following examples will illustrate how to utilize proc transpose to convert this long dataset where there are multiple rows per subsidiary into a wide dataset where the rows are uniquely defined by each subsidiary.
Below is an example of using sas proc transpose to reshape. You might want to research two other procedures, report and tabulate. The id statement in proc transpose assigns the name of the output variable based on the value of the id variable. When many variables with their individual formats are transposed into one variable, we lose the formats. Proc transpose uses the values of the variable student to label the transposed variables. The procedure pads the output data set with missing values if the number of observations in the input data set and the number of variables it transposes are. Because of this, the number of records in your output data set will be the. Proc transpose output help sas support communities. For common input files, this paper will show a variety of desired output files, plus code and explanations. Sas users are unsure of the results it will give and curious about syntax that is often not particularly intuitive. Eventually, i would like to have the same output for dataset 2 as in dataset 1 below. Another design aspect was to use named parameters that were identical to proc transposes statements and options.
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