[dune-pdelab] Computing Maximum and Average solution with DG

[Jared Okiro]

Dear PDELab Members,

I am using DG method to solve a reaction diffusion system in 2D.
When computing the maximum solution, the value printed is at variance 
with the value
given by the subSamplingVTKWriter. The vtk files give the correct 
results while the printed values are low and not correct. I have 
attached a test case on how I am computing the maximum and average 
solution using polynomial degree 1. In this test case, maximum solution 
should be 10, but it prints 9.14.
I am inquiring if this is the correct way to compute maximum and average 
of solution in DG method.
I will appreciate any advice.
Thank you.

Jared Ouma Okiro,
Institute for Analysis and Numerics,
Otto-von- Guericke Universität,
Universitätsplatz 02, Gebaude 02 / 115
39106 Magdeburg, Germany
Office Tel: +493916712660
Fax:         +493916718073
Mobile:     +4917657479787
Home Tel: +4939155917376
Email:jared.okiro at st.ovgu.de <mailto:Email%3Ajared.okiro at st.ovgu.de>


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