Improve matrix error messages.

[pspp] / doc / matrices.texi

diff --git a/doc/matrices.texi b/doc/matrices.texi
index 83eccb8d62a7edde2361e2adbb3addb04d31b97c..113875a1f75bcf2d6c23a230e5da2e48b498b916 100644 (file)
--- a/doc/matrices.texi
+++ b/doc/matrices.texi
@@ -1420,14 +1420,14 @@ equivalent to @code{@{A(1,1)*B, A(1,2)*B; A(2,1)*B, A(2,2)*B@}}.
 @end deffn
 
 @deffn {Matrix Function} RANK (@var{M})
+Returns the rank of matrix @var{M}, a integer scalar whose value is
+the dimension of the vector space spanned by its columns or,
+equivalently, by its rows.
 @end deffn
 
-
-
-
 @deffn {Matrix Function} SOLVE (@var{Ma}, @var{Mb})
-@end deffn
 
+@end deffn
 
 @deffn {Matrix Function} SVAL (@var{M})
 @end deffn