Compress data sas example
How do I reduce a dataset in SAS?
Another way to reduce the size of a SAS data set is by saving only the needed variables in a dataset using DROP and/or KEEP options.
Also, using LENGTH or ATTRIB statements to assign the minimum lengths that are required for the variables in a SAS dataset can reduce the size of a SAS data set..
What is an example of a data compression program?
WinZip is a popular Windows program that compresses files when it packages them in an archive.
Archive file formats that support compression include ZIP and RAR.
The BZIP2 and GZIP formats see widespread use for compressing individual files..
What is the compress function in SAS eg?
The COMPRESS function compiles a list of characters to keep or remove, comprising the characters in the second argument plus any types of characters that are specified by the modifiers.
All blanks have been removed.
If the argument is completely blank, then the result is a string with a length of zero..
- set string; comp = compress(text); run; The COMPRESS function compresses the character value and removes all of the blank spaces from the string.
- The COMPRESS function compiles a list of characters to keep or remove, comprising the characters in the second argument plus any types of characters that are specified by the modifiers.
All blanks have been removed.
If the argument is completely blank, then the result is a string with a length of zero.
May 23, 2023Compressing a file reduces the number of bytes that are required to represent each observation. Advantages of compressing a file include reduced
May 23, 2023Use the COMPRESS= data set option to compress an individual file. Specify the option for output data sets only. That is, specify data sets named
How do i compress a data set in SAS?
Use the COMPRESS= data set option to compress an individual file.
Specify the option for output data sets only--that is, data sets named in the DATA statement of a DATA step or in the OUT= option of a SAS procedure.
Use the COMPRESS= data set option only when you are creating a SAS data file (member type DATA).
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What is compressed_name in SAS?
Notice that all all numeric values have been removed from each string in the new column called compressed_name.
This tutorial explains how to use the COMPRESS function in SAS, including:
- several examples
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Why does SAS need more CPU time?
One of the main reasons is increase in CPU-time.
Additional CPU resources are required to both create a compressed data set and to apply SAS tasks to the compressed data set.
The SAS system must uncompress the data set every time it applies a data step or procedure step to it.
Example 2: Remove Specific Characters from String
The following code shows how to remove all question marks and exclamation points from each string in the namecolumn: Notice that all question marks and Example 3: Remove All Alphabetical Characters from String
The following code shows how to remove all alphabetical characters from each string in the namecolumn: Notice that all all alphabetical characters have Example 4: Remove All Numeric Values from String
The following code shows how to remove all numeric values from each string in the namecolumn: Notice that all all numeric values have been removed from each Additional Resources
The following tutorials explain how to perform other common tasks in SAS: How to Use the SUBSTR Function in SAS How to Use the FIND Function in SAS What is compressed_name in SAS?
Notice that all all numeric values have been removed from each string in the new column called compressed_name
This tutorial explains how to use the COMPRESS function in SAS, including several examples
data Convert; length ID $3 Weight $8; input ID Weight; Wt = input(compress(Weight,, 'kd'), 8.) ; /* The COMPRESS function uses two modifiers, 'k' and 'd'. This means keep the digits, remove anything else.
