📄 m23 - reading free-format data - 38 of 40.mht
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Date: Tue, 9 Mar 2004 11:46:12 +0800
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<H2><STRONG><A name=3DText>Text Summary</A></STRONG> </H2>
<P><EM>To go to the page where a task, programming feature, or=20
concept was presented, select a=20
link.</EM></P></TD></TR></TBODY></TABLE><BR><!-- InstanceBeginEditable =
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<TD>
<P><STRONG>Free-Format Data </STRONG><BR>External files can =
contain raw=20
data that is <A=20
onmouseover=3D"window.status=3D'Display details on free-format =
data.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
=
href=3D"http://www.sas.com/apps/OLTRN/59080/m23/m23_2.htm">free-format</A=
>;=20
that is, the data is not arranged in fixed fields. The fields can =
be=20
separated by blanks, or by some other delimiter, such as commas. =
</P>
<P><STRONG>Using List Input</STRONG><BR>Free-format data can =
easily be=20
read with <A=20
onmouseover=3D"window.status=3D'Display details on list input.'; " =
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
href=3D"http://www.sas.com/apps/OLTRN/59080/m23/m23_3.htm">list =
input</A>=20
because you do not need to specify column locations of the data. =
You=20
simply list the variable names in the same order as the =
corresponding raw=20
data fields. You must distinguish character variables from numeric =
variables by using the dollar ($) sign.=20
<P>When characters other than blanks are used to separate the data =
values,=20
you can specify the field delimiter by using the <A=20
onmouseover=3D"window.status=3D'Display details on the DLM=3D =
option.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
href=3D"http://www.sas.com/apps/OLTRN/59080/m23/m23_8.htm">DLM=3D =
option</A>=20
in the INFILE statement.=20
<P>You can also specify a <A=20
onmouseover=3D"window.status=3D'Display details on reading a range =
of variables.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
href=3D"http://www.sas.com/apps/OLTRN/59080/m23/m23_9.htm">range =
of=20
variables</A> in the INPUT statement when the variable values in =
the raw=20
data file are sequential and are separated by blanks (or by some =
other=20
delimiter). This is especially useful if your data contains =
similar=20
variables, such as the answers to a questionnaire.=20
<P>In its simplest form, list input places several <A=20
onmouseover=3D"window.status=3D'Display details on the limitations =
of list input.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
=
href=3D"http://www.sas.com/apps/OLTRN/59080/m23/m23_10.htm">limitations</=
A>=20
on the types of data that can be read.=20
<P><STRONG>Reading Missing Values</STRONG> <BR>If your data =
contains <A=20
onmouseover=3D"window.status=3D'Display details on reading missing =
values at the end of a record.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
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