![]() ![]() The pointer control moves the input pointer a specific column number n.There are two pointer controls that we'll learn about here: In practice, the brackets () should not appear in the INPUT statements in your program. For example, you need not tell SAS to go to column 1 if that's where you want to start reading data values, because that's where SAS starts by default. For example, the pointer-control appears in brackets () only to indicate that it is optional, or rather, not necessary for every variable you create. The above INPUT statement is written using standard SAS Help notation. informat is a special instruction that tells SAS how to read the raw data valuesĪ couple of things here.variable is the name of the variable being created.pointer-control tells SAS at what column to start reading the data value.Here's the general form of the INPUT statement when using formatted input: INPUT variable informat. data in fraction, integer binary, real binary, and hexadecimal formsĮxamples of nonstandard numeric values include: 23.3%, $1.26, and 03/07/47.values that contain special characters, such as dollar signs ($), percent signs (%), and commas (,).On the other hand, nonstandard numeric data values include: negative (minus) and positive (plus) signsĮxamples of standard numeric values include: 26, 3.9, -13, +3.14, 314E-2, and 2.193E3.Recall that standard numeric data values can contain only: That is, formatted input combines the features of column input with the ability to read nonstandard data values. The fundamental difference between column input, which we studied in the previous lesson, and formatted input, which we'll explore now, is that column input is only appropriate for reading standard numeric data, while formatted input allows us to read both standard and nonstandard numeric data. Data must be in standard character or numeric format.A longer value is truncated when it is written to the data set NOTE! 1 byte = 1 character The default length of character values is 8 bytes.Character values can't contain embedded blanks.(A blank field causes the matching of variable names and values to get out of sync.) Missing values must be represented by a place holder such as a period.Fields must be read in order from left to right.Fields must be separated by at least one blank (or other delimiters).Because you do not have to tell SAS the columns in which the data values appear, you must take note of the following restrictions: The ease comes with a bit of a price, however. List input might be the easiest input style to use because, as shown in the examples that follow, you simply list the variable names in the same order as the corresponding raw data fields. Here, we'll investigate how to use list input to read in free-format data looking like this, say: Smith 8145551354 3.89 In the previous lesson, we investigated how to use column input to read data values that appear in neatly define columns looking like this, say: Smith 8145551354 3.89 Okay, now let's spend some time on a subject that is a little more fitting for the title of this lesson. Now, to view the descriptor information for any of the files that appear in the sashelp library, we need to modify our CONTENTS procedure a little bit. Upon doing so, you should see output that looks something like this: You may also opt to store your own files there. Sasuser is a permanent library that contains SAS files in the Profile catalog that store your personal settings.You can download these sample data for practicing or illustrating purpose. Sashelp is a permanent library that contains more than 200 sample data and other files that control how SAS works at your site.As you know, Work is a temporary library for files that do not need to be saved from session to session. ![]() You should see, at least, three libraries that SAS defines for you by default: Then you should see a listing of your libraries, that is, something that looks like this: If the Explorer Window is not active, then click on the Explorer tab that appears among the bottom tabs.ĭouble click Libraries, which contains all available libraries. The following SAS code requests a listing of the contents of the library called sashelp: PROC CONTENTS data = sashelp._ALL_ nods įirst, what are SAS Libraries all about? Let's have you launch your SAS application. ![]()
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