minor fixes

pydemo/shallowWater/main.py

@@ -7,7 +7,14 @@ parameter.append({"fem.verboserank": -1})
 parameter.append("parameter")
 
 primitive=lambda Model,uh: {"freesurface":Model.toPrim(uh)[0]}
-
+parameters = {"fem.ode.odesolver": "EX",
+              "fem.timeprovider.factor": 0.45/2.,
+              "dgadvectionflux.method": "LLF",
+              "femdg.limiter.limiteps": 1,
+              "femdg.limiter.admissiblefunctions": 1,
+              "femdg.limiter.tolerance": 1}
 run(*problem(1),
         startLevel=0, polOrder=2, limiter="default",
-        primitive=primitive, saveStep=0.1, subsamp=0)
+        primitive=primitive, saveStep=0.1, subsamp=0,
+        dt=None,threading=True, grid="alucube",
+        parameters=parameters)

python/dune/femdg/testing.py

@@ -86,12 +86,12 @@ def run(Model, initial, x0,x1,N, endTime, name, exact,
         except:
             pass
         vtk.write(name, count, outputType=OutputType.appendedraw)
-    else:
-        if exact is not None:
-            grid.writeVTK(name, subsampling=subsamp, celldata=[u_h, exact(t)])
-        else:
-            grid.writeVTK(name, subsampling=subsamp, celldata=[u_h])
 
+    # output the final result and compute error (if exact is available)
     if exact is not None:
+        grid.writeVTK(name, subsampling=subsamp,
+                celldata={"solution":u_h, "exact":exact(t)})
         error = integrate( grid, dot(u_h-exact(t),u_h-exact(t)), order=5 )
         print("error:", math.sqrt(error),flush=True )
+    else:
+        grid.writeVTK(name, subsampling=subsamp, celldata=[u_h])