Add the /BLANK subcommand to AUTORECODE

[pspp] / doc / transformation.texi

diff --git a/doc/transformation.texi b/doc/transformation.texi
index f1d1cbf2617b649c5393b10428325329c696447d..883584b91f794bb4ccd8091b5cbaf6ff17fdc8af 100644 (file)
--- a/doc/transformation.texi
+++ b/doc/transformation.texi
@@ -223,6 +223,7 @@ AUTORECODE VARIABLES=src_vars INTO dest_vars
         [ /DESCENDING ]
         [ /PRINT ]
         [ /GROUP ]
+        [ /BLANK = @{VALID, MISSING@} ]
 @end display
 
 The @cmd{AUTORECODE} procedure considers the @var{n} values that a variable
@@ -247,6 +248,11 @@ The GROUP subcommand is relevant only if more than one variable is to be
 recoded.   It causes a single mapping between source and target values to
 be used, instead of one map per variable.
 
+If /BLANK=MISSING is given, then string variables which contain only 
+whitespace are recoded as SYSMIS.  If /BLANK=VALID is given then they
+will be allocated a value like any other.  /BLANK is not relevant
+to numeric values. /BLANK=VALID is the default.
+
 @cmd{AUTORECODE} is a procedure.  It causes the data to be read.
 
 @node COMPUTE