📄 m30 - transforming data with sas functions - 93 of 95.mht
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<H2><STRONG><A name=3DText>Text Summary</A></STRONG> </H2>
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<P><STRONG>Using SAS Functions</STRONG><BR><A=20
onmouseover=3D"window.status=3D'Display details on the use of SAS =
functions.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
href=3D"http://www.sas.com/apps/OLTRN/59080/m30/m30_2.htm">SAS =
functions</A>=20
can be used to convert data and to manipulate the values of =
character=20
variables. Functions are written by specifying the function name, =
then its=20
<A onmouseover=3D"window.status=3D'Display details on function =
arguments.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
=
href=3D"http://www.sas.com/apps/OLTRN/59080/m30/m30_4.htm">arguments</A> =
in=20
parentheses. Arguments can include variables, constants, or =
expressions.=20
Although arguments are typically separated by commas, they can =
also be=20
specified as variable lists or arrays. =
</P></TD></TR></TBODY></TABLE><BR>
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<TD align=3Dleft><STRONG>Automatic Character-to-Numeric=20
Conversion</STRONG><BR>When character variables are used in a =
numeric=20
context, SAS tries to <A=20
onmouseover=3D"window.status=3D'Display details on automatic =
character conversion.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
href=3D"http://www.sas.com/apps/OLTRN/59080/m30/m30_9.htm">convert =
the=20
character values</A> to numeric values. Numeric context includes=20
arithmetic operations, comparisons with numeric values, and =
assignment to=20
previously defined numeric variables. The original character =
values are=20
not changed. The conversion creates temporary numeric values and =
places a=20
note in the SAS log.</TD></TR></TBODY></TABLE></CENTER>
<P align=3Dcenter>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"85%" border=3D0>
<TBODY>
<TR>
<TD align=3Dleft><STRONG>Explicit Character-to-Numeric=20
Conversion</STRONG><BR>The <A=20
onmouseover=3D"window.status=3D'Display details on the INPUT =
function.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
href=3D"http://www.sas.com/apps/OLTRN/59080/m30/m30_11.htm">INPUT=20
function</A> provides direct, controlled conversion of character =
values to=20
numeric values. When a character variable is specified in a =
numeric=20
informat, the INPUT function generates numeric values without =
placing a=20
note in the SAS log.</TD></TR></TBODY></TABLE></CENTER>
<P align=3Dcenter>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"85%" border=3D0>
<TBODY>
<TR>
<TD align=3Dleft><STRONG>Automatic Numeric-to-Character=20
Conversion</STRONG><BR>When numeric variables are used in a =
character=20
context, SAS tries to <A=20
onmouseover=3D"window.status=3D'Display details on automatic =
numeric conversion.'; "=20
onclick=3DsuggestBack() onmouseout=3D"window.status=3D''"=20
=
href=3D"http://www.sas.com/apps/OLTRN/59080/m30/m30_17.htm">convert the=20
numeric values</A> to character values. Character context includes =
concatenation operations, use in functions that require character=20
arguments, and assignment to previously defined character =
variables. The=20
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