What does descending do in SAS?
DESCENDING. reverses the sort order for the variable that immediately follows in the statement so that observations are sorted from the largest value to the smallest value. The DESCENDING keyword modifies the variable that follows it.
How do I sort a table in SAS?
Sort a Table
- To sort by a variable, select the variable in the Variables list and click .
- To remove a variable from the Sort by list, select the variable and click .
- To change the variable’s ascending or descending sort status, select the variable in the Sort by list and click Ascending or Descending.
How do you do ascending order in SAS?
sorts in ascending order the variable or variables that it follows. Observations are sorted from the smallest value to the largest value. The ASCENDING keyword modifies all the variables that precede it in the KEY statement.
|Default||ASCENDING is the default sort order.|
What does Proc Tabulate do in SAS?
Proc tabulate is predominately used to make nice looking tables. Unlike proc freq this procedure can handle multiple variables in the row and column expressions. It can also handle multiple levels in both rows and columns whereas proc freq will only create two variable contingency tables.
How do you use ascending and descending in SAS?
- If you list just one variable, then SAS will sort the observations in the dataset based on ascending values of that variable.
- You can sort in descending order by placing the keyword DESCENDING before the variable name that you want the dataset to be sorted on.
- You can sort by as many variables as are in the dataset.
How do I reverse the order of data in SAS?
You can use nobs and point to process it backwards without having to do any intermediate steps. Here’s an example: data backwards; do k= nobs to 1 by -1; set sashelp. class nobs = nobs point=k; output; end; stop; run; proc print data=sashelp.
What is the syntax of PROC sort?
PROC SORT DATA=auto OUT=auto3 ; BY DESCENDING foreign ; RUN ; PROC PRINT DATA=auto3 ; RUN ; You can see in the proc print below that the data are now ordered by foreign, but highest to lowest. It is also possible to sort on more than one variable at a time.
Can you use where in Proc sort?
There are times when it is necessary to subset your data and the SORT procedure allows you to do this by using the WHERE= option or WHERE STATEMENT. Both of these work similarly by selecting observations that meet the condition specified in the WHERE expression before SAS brings them into the PROC SORT for processing.
What is the difference between Proc Report and Proc Tabulate?
Proc Tabulate only produces summary reports, based on class and analysis variables. These summary reports are always tabular in structure, with 3 possible dimensions — page, row and column dimension. Proc Report produces both “detail” and summary reports.
How do you remove N in Proc Tabulate?
The statistic label ‘N’ is masked, or removed, using *(N=’ ‘) after the universal class variable ALL. The summary data in the table cells are formatted using the FORMAT= option in the TABULATE statement.
How do I sort columns in SAS?
How do I sort multiple columns in SAS?
These are the steps to sort a dataset in SAS with PROC SORT:
- Start the procedure with the PROC SORT statement.
- Use the DATA=-option to specify the input dataset.
- Optionally, use the OUT=-option to specify the output dataset.
- Use the BY statement to specify the order of the dataset.
- End the procedure with the RUN statement.
How do I reverse a string in SAS?
run; In SAS, there is a function available for reversing a string. The function is called REVERSE. The LEFT function is used before REVERSE function to remove leading spaces.
How do I sort variables in SAS?
How do I sort in Proc report?
There are two “ORDER” options in PROC REPORT that direct how PROC REPORT output is sorted. These are the ORDER usage, and the ORDER= options. It is important to understand the function of each option, and how the ORDER and ORDER= options work together, to ensure expected results.
What is proc transpose in SAS?
Creates an output data set by restructuring the values in a SAS data set, transposing selected variables into observations. Tip: You can use data set options with the DATA= and OUT= options. For more information, see Statements with the Same Function in Multiple Procedures.
How do I order columns in SAS dataset?
So, how do you reorder variables in a SAS dataset? You change the position of a variable in a SAS dataset with a DATA Step and the RETAIN statement. The RETAIN statement must be placed before the SET statement and is followed by the column names in the desired order.
Can you proc sort by two variables?
Sorting a dataset in SAS can be done with PROC SORT and with PROC SQL. Both can order datasets ascendingly, descendingly, and by multiple variables.
How do you pull the last 3 letters in SAS?
You can use the SUBSTR() function in combination with the LENGTH() or REVERSE() function to extract the last character from a string in SAS.
How do I remove a letter from a string in SAS?
The SAS compress() function allows us to remove characters from strings easily. compress() takes 3 arguments. The first argument is a character variable. The second argument is the characters you want to keep or remove – we can keep characters with compress() as well.
Does Proc sort produce a report?
PROC SORT produces only an output data set. To see the output data set, you can use PROC PRINT, PROC REPORT, or another of the many available methods of printing in SAS.
What is _name_ in SAS?
SAS automatic variable _NAME_ contains the name of the variable being transposed.
How do I transpose columns to rows in SAS?
To transpose columns:
- Open a table.
- Select Transpose in the transforms list.
- On the ID Columns tab, specify the columns that contain the row values that you want to transform into columns.
- (Optional) On the Transpose Columns tab, specify the columns that contain the data with which you want to populate the output table.
How do I sort a column in SAS?
How do you order variables in data step?
In the DATA step, variable order is determined by the first mention of the variable as it passes through the PDV. DATA step statements that can set the order of variables include ARRAY, ATTRIB, FORMAT, INFORMAT, LENGTH and RETAIN.