SAS Enterprise Guide - Importing Data
Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I cannot quite figure out how to change the format of a column in my data file. I have the data set proc imported, and it guessed the format of a specific column as numeric, I would like to to be character-based.
However, you can write a data step to read in the file and then customize everything. You can copy that code, edit it, and run to get what you need. Granted, the grammar in this section is horrific!
Learn more. Asked 11 months ago. Active 11 months ago. Viewed times. Just write your own data step to read it. Active Oldest Votes. You could import the data and then format after using - I believe the following would work. I seem to still be having trouble with this: x left join y on put x. Did this part first, then joined later in a separate table.
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Sign up using Email and Password. Post as a guest Name.Specify SAS data set options. A fileref is a SAS name that is associated with the physical location of the output file. You can omit the quotation marks if the filename does not include certain characters such as these:.
If the name does not include special characters, such as question marks, lowercase characters, or spaces, you can omit the quotation marks. The DBMS table name might be case sensitive. If your site does not have a license, only delimited files and JMP files are supported. Microsoft Access versions, and share the same internal file formats.
Microsoft Excel 97, and share the same internal file formats. Access 97 cannot read this file. All rights reserved. Previous Page Next Page.
The use of a fileref is not supported. SAS supports numeric and character types of data but not for example, binary objects. In many cases, the procedure attempts to convert the data to the best of its ability. However, at times this is not possible.
Interaction: For some input data sources such as a Microsoft Excel spreadsheet, the first eight rows of data are scanned. The most prevalent data type numeric or character is used for a column. This is the default. If most of the data in the first eight rows is missing: SAS defaults to data type: character. Any subsequent numeric data for that column is set to missing. If most of the data in the first eight rows is character data: SAS assigns data type: character. Default: character Note: For information about how SAS converts data types, see the specific information for the data source file format that you are importing.
SAS does not support member names longer than 32 bytes. DB files. Restriction: The availability of a data source depends on: The operating environment and in some cases the platform. Feature: Access can open all formats. Featured in: All examples. For some input data sources such as a Microsoft Excel spreadsheet, the first eight rows of data are scanned. For information about how SAS converts data types, see the specific information for the data source file format that you are importing.
Supported Data Sources and Environments. Delimited file with comma-separated values. Delimited file default delimiter is a blank. Microsoft Excel 4. Lotus Release 2 spreadsheet.A fileref is a SAS name that is associated with the physical location of the output file.
If you specify a fileref or if the complete path and filename does not include special characters such as the backslash in a path, lowercase characters, or spaces, then you can omit the quotation marks.
To import a tab-delimited file, specify TAB as the identifier. To import any other delimited file that does not end in. For a comma-separated file with a. CSV as an extension for a comma-separated file. All rights reserved. Previous Page Next Page. SAS supports numeric and character types of data but not for example, binary objects.
In many cases, the procedure attempts to convert the data to the best of its ability. However, conversion is not possible for some types. Interaction: For delimited files, the first 20 rows are scanned to determine the variable attributes. For more information, see Data Source Statements. All values are read in as character strings. If a Date and Time format or numeric informat can be applied to the data value, the type will be declared as numeric.
Otherwise, the type remains character. Restriction: You cannot specify data set options when importing delimited, comma-separated, or tab-delimited external files. Featured in: Importing a Delimited External File. For delimited files, the first 20 rows are scanned to determine the variable attributes. You cannot specify data set options when importing delimited, comma-separated, or tab-delimited external files.
Importing a Delimited External File.These files are referred to collectively in this document as XLS files. Microsoft Excel workbook file formats are referred to as. Files that are created with Excel can create and work with all Excel file formats.
An Excel file represents an Excel workbook. An Excel workbook is a collection of worksheets. A worksheet that was created with a version before Excel can contain up to columns and 65, rows in an. A cell is the intersection of a column and a row.
It is referenced by a column number and a row number.
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For example, B5. A cell is the basic unit that saves data in the worksheet. A cell can contain a numeric value or a text value of up to 32, characters. A range is a subset of cells in a worksheet. Its address identifies it. It begins with the name of the top left cell and ends with the name of the bottom right cell, separated by two periods. For example, the range B E8 is the range address for a rectangular block of 12 cells, where the top left cell is B2 and the bottom right cell is E8 shown as shaded, below.
A range name identifies a range. Excel has been enhanced to support 16, columns and 1, rows in a worksheet. Files that are created with Excel can have an.
A range name must be defined in the Excel file before SAS can use it. A worksheet is treated as a special range. For example, Sheet1 is a sheet name in an Excel file. You need to use SAS n-literal when referring to the sheet name. The first row of data in a range is usually treated as a column heading and used to create a SAS variables name. Excel, and files with an. Character data can be labels or formula strings. Character data is generally considered text and can include character type dates and numbers.
A cell can save up to 32, characters. Numeric data can be numbers, formulas, or error values. Numeric data can include numbers 0 through 9formulas, or error values such as NULL! Numeric data can also include date and time values.
The conversion of date and time values between SAS data sets and Microsoft Excel spreadsheets is transparent to users.In SAS, there are various data sources as showin in the following figure. If you have a data set generated in other software packages e. Let us take the following example first. The above example reads four observations with missing.
Note that "english" of the second observation is missing since consecutive blanks are interpreted as a delimiter. Since the version 8. So an additional DATA step is not necessary unless the data set needs to be manipulated.
Personally, I prefer the IMPORT Wazard to the procedure, since the former provides a user-frendly interface, high flexibility, and other useful features. It depends. If your data file is messy and ill-organized, the wizard will be a good solution. You can directly input data in a Data Step. The following example reads a numeric variable ida string variable departand a numeric variable price.
Note that data items are delimited separated by a space. What if a comma is used as a delimiter and there is a missing value in the second data line? The DSD option is the answer. DSD reads a value as missing between two consecutive delimiters. Without this option, the above program reads only first observation. If you want to export a data set into an external file, use PUT statement. PUT allows you to control the output format flexibly, but it is a bit difficult, especially for beginners, to use this statement correctly.
The following example exports a data set to an Excel file. A dBase III file has ony one table that has a well defined data structure. Thus, you have to provide database, table, account identificationand password to access a database file.
This network functionality provides high flexibility and convenience in the information era. The following example uses FTP to access the data resource. Note that the period. You may import a worksheet of an Excel file. First highlight the part of worksheet in Excel and copy it into the Windows Clipboard. Suppose you choose 5 variables. Accordingly, you have to export a data set in the software into a general file format e.
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It has the following variable types: dates, time, numeric variables, and what should be numeric variables that incorrectly have characters attached to a number - e. There are also blank lines between every record, and it is not realistic to delete all of these as I have hundreds of files to manage.
Please don't comment on this issue as it is out of my control and at this point all I can do is manage the data until the error is fixed and character values stop being written into the files.
This is NOT okay in the case of the asterisks, because I want to maintain the numeric portion of the value and remove the asterisk in a later data step. However, it very strangely no longer determines the variables with parentheses as character as it would have done when importing an Excel file as long as the parenthesis was in the first 20 linesbut instead removes the character and additionally rounds the value to the nearest whole number 0. This is way too coarse of rounding - I need to maintain the decimal places.
And, on top of that, the parentheses are now gone so I can't make the appropriate cells missing. To me, this is inconsistent behavior - why is the asterisk but not a parenthesis considered a character in this case?
SAS actually by default uses the first 8 rows. For a CSV file, you can write a data step import to control the formats of each variable. Then just modify the informats as needed. You say you have too much trouble with Infile method, so perhaps this won't work for you, but typically you can work around any inconsistencies - and if your files are THAT inconsistent it sounds like you'll be doing a ton of manual work anyway.
One additional option you have is to clean out the characters before it's read in from the CSV. This is pretty simple, if it's truly just numerics and commas and decimals and negative signs :. Then read that new file in using proc import. I am splitting it into two datasteps so you can see it, but you could combine them into one for ease of running - look up "updating a file in place" in SAS documentation.
You could also accomplish this cleaning using OS specific tools; on Unix for example a short awk script could easily remove the misbehaving characters. Learn more.R5 1100m Class: BM60, Handicap 2:40PM Selections 7. R6 1550m Class: BM64, Handicap 3:20PM Selections 1.
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