Changeset 3467

Timestamp:

Aug 8, 2006, 5:06:54 PM (18 years ago)

Author:

ole

Message:

Added in requirements from pyvolution wiki

File:

• documentation/requirements/anuga_API_requirements.tex (modified) (1 diff)

documentation/requirements/anuga_API_requirements.tex

@@ -235 +235 @@
 
 
+\chapter{Old stuff from pyvolution/wiki}
+
+
+\begin{itemize} 
+  \item Make origins instances of a georeference class 
+        (like class point from GPScape).
+         It would conatin multiple representation, projections and code for adding itself to e.g. NetCDF files.
+  \item Tagged regions, edges etc should be done in terms of set-theory,
+so that each tag maps e.g. to a list of indices.
+
+
+  \item The information from a .tsh file shall be converted to a data
+structure that pyvolution understands.
+  \item The vertex attribute information will be converted to field values
+ and they shall be accessable using the attribute tag.
+  \item Volumes will have a region tag. This shall be implemented using the
+  principals of set theory.
+  \item For a given region and a given field value/conserved quantity apply
+  a supplied function with parameters (x,y and the old value
+  of the field value/conserved quantity).  
+  \item Also need a flag specifying if the vertex or centroid values are
+  being set.(Rational - will can be used to avoid discontinuites/ or
+  create them, depending on what is required.)
+  Example calls: domain.set_field_values('bed_elevation', 
+                                         f, location='vertices')
+                                         
+  Example calls: domain.set_conserved_quantities('stage', f, 
+                                                 location='centroid')
+                                                                         
+                                        
+                                        
+  where f has the form
+  def f(x, y, old_value):
+      ...
+      return z                                                                           
+\end{itemize} 
+
+
 \end{document}