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Dear PDElab developers,<br>
<br>
I implemented grid adaptivity into my module following example 7
from the PDElab-howto (src/course-examples/example07_adaptivity.hh),
and everything works fine so far. However, there are two
'strategies' mentioned in the code to choose from:<br>
<br>
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<div data-canvas-width="207.77894925298597" style="left: 260.371px;
top: 1023.52px; font-size: 13.2835px; font-family: serif;
transform: scale(1.39278, 1); transform-origin: 0% 0% 0px;">//<<<10>>>Adapt
the grid locally . . .</div>
<div data-canvas-width="158.36949166009092" style="left: 158.67px;
top: 1039.3px; font-size: 13.2835px; font-family: serif;
transform: scale(1.58634, 1); transform-origin: 0% 0% 0px;">//
with strategy 1:</div>
<div data-canvas-width="134.35411604864697" style="left: 706.962px;
top: 1055.08px; font-size: 13.2835px; font-family: sans-serif;
transform: scale(1.25643, 1); transform-origin: 0% 0% 0px;">Dune :
: PDELab : : element_fraction ( eta , alpha , beta , eta_alpha ,
eta_beta , verbose ) ;</div>
<div data-canvas-width="319.2606782371044" style="left: 158.67px;
top: 1070.85px; font-size: 13.2835px; font-family: serif;
transform: scale(1.56744, 1); transform-origin: 0% 0% 0px;">// or
, alternatively , with strategy 2:</div>
<div data-canvas-width="133.90480912064103" style="left: 707.683px;
top: 1086.63px; font-size: 13.2835px; font-family: serif;
transform: scale(1.46611, 1); transform-origin: 0% 0% 0px;">//Dune
: :PDELab: : error_fraction ( eta , alpha , beta , eta_alpha ,
eta_beta , verbose );</div>
<br>
So, I was wondering, how exactly the two strategies 'element
fraction' and 'error fraction' differed. A quick google search did
not yield any viable results, so I figured I would ask here, if
someone could roughly sketch the difference between the two methods
for me or recommend further literature, where the two strategies are
explained.<br>
<br>
Thank you in advance,<br>
Dion Häfner<br>
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