Changeset 4782

Timestamp:

Nov 5, 2007, 1:50:57 PM (17 years ago)

Author:

ole

Message:

Updates to user manual on uniquely stored vertices triggered by posting by Rajaraman.

File:

• anuga_core/documentation/user_manual/anuga_user_manual.tex (modified) (1 diff)

anuga_core/documentation/user_manual/anuga_user_manual.tex

@@ -1810 +1810 @@
 computed in the model or whether they should be reduced to one
 value per vertex using averaging.
+
+Triangles stored in the sww file can be discontinuous reflecting 
+the internal representation of the finite-volume scheme 
+(this is a feature allowing for arbitrary steepness). 
+However, for visual purposes and also for use with \code{Field\_boundary} 
+(and \code{File\_boundary}) it is often desirable to store triangles 
+with values at each vertex point as the average of the potentially 
+discontinuous numbers found at vertices of different triangles sharing the 
+same vertex location.  
+ 
+Storing one way or the other is controlled in ANUGA through the method 
+\code{domain.store\_vertices\_uniquely}. Options are
+\begin{itemize} 
+  \item \code{domain.store\_vertices\_uniquely(True)}: Allow discontinuities in the sww file 
+  \item \code{domain.store\_vertices\_uniquely(False)}: (Default). 
+  Average values 
+  to ensure continuity in sww file. The latter also makes for smaller 
+  sww files.
+\end{itemize}   
+
 \end{methoddesc}