Changeset 5246

Timestamp:

Apr 28, 2008, 6:21:32 PM (15 years ago)

Author:

sexton

Message:

resolving ticket 269

File:

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

anuga_core/documentation/user_manual/anuga_user_manual.tex

@@ -4206 +4206 @@
 Read the doc string for more information.
 
+\subsubsection{How do I extract elevation and other quantities from a SWW file?}
+
+The function \code{sww2dem} can extract any quantity, or expression using 
+quantities, from a SWW file as used in 
+the Cairns example described earlier. This function is used in \code{ExportResults.py}
+in the Cairns demo folder where stage, absolute momentum, depth, speed and elevation 
+can be exported from the input sww file. Note that depth, absolute momentum and speed
+are expressions and stage and elevation are quantities. In addition to extracting a particular
+quantity or expression, the user can define a region to extract these values by
+defining the minimum and maximum of both the easting and northing coordinates. The function
+also calls for a grid resolution, or cell size, to extract these values at. It is 
+recommended to align this resolution with the mesh resolution in the desired region and to not 
+generate a fine grid where the model output cannot support that resolution.
+
+ 
+
 \chapter{Glossary}