📄 m26 - creating multiple observations from a single record - 31 of 33.mht
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Date: Tue, 9 Mar 2004 11:50:15 +0800
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<H2><STRONG><A name=3DText>Text Summary</A></STRONG> </H2>
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<P><STRONG>File Formats</STRONG><BR>One raw data record can =
contain enough=20
information to produce several observations. Data is stored in =
this manner=20
in order to reduce the size of the entire file. The data can be =
organized=20
into </P>
<UL>
<LI><A=20
onmouseover=3D"window.status=3D'Display details on reading =
repeating blocks of data.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
=
href=3D"http://www.sas.com/apps/OLTRN/59080/m26/m26_2.htm">repeating=20
blocks of data</A>=20
<LI><A=20
onmouseover=3D"window.status=3D'Display details on reading an id =
field followed by the same number of repeating fields.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
href=3D"http://www.sas.com/apps/OLTRN/59080/m26/m26_12.htm">an =
ID field=20
followed by the same number of repeating fields</A>=20
<LI><A=20
onmouseover=3D"window.status=3D'Display details on reading an id =
field followed by a varying number of repeating fields.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
href=3D"http://www.sas.com/apps/OLTRN/59080/m26/m26_22.htm">an =
ID field=20
followed by a varying number of repeating fields.</A>=20
</LI></UL><STRONG>Reading Repeating Blocks of Data</STRONG><BR>To =
create=20
multiple observations from a record that contains repeating blocks =
of=20
data, the DATA step needs to hold the current record until each =
block of=20
data has been read and written to the data set as an observation. =
The DATA=20
step should include statements that=20
<OL>
<LI>read the first block of values and <A=20
onmouseover=3D"window.status=3D'Display details on holding the =
current record.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
href=3D"http://www.sas.com/apps/OLTRN/59080/m26/m26_3.htm">hold =
the=20
current record</A> with the <A=20
onmouseover=3D"window.status=3D'Display details on the @@ =
line-hold specifier.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
=
href=3D"http://www.sas.com/apps/OLTRN/59080/m26/m26_4.htm">http://www.sas=
.com/apps/OLTRN/59080/m26/m26_4.htm</A>=20
line-hold specifier=20
<LI>optionally add a FORMAT statement to display date or time =
values=20
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