search

ARudik / feelpp

Automatically exported from code.google.com/p/feelpp
0 stars 0 forks source link

Implement L_infinity norm #29

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
the max norm for vectors is implemented but now we need to have
the L_infinity norms for functions (of function spaces).

The implementation will require evaluating the functions at quadrature nodes
(set automatically but that the user can actually change himself/herself).
and then compute the max of the evaluation. 
We need not only to return the max absolute value but also the point 
coordinates in space at which it occurs  

A boost.parameter interface is needed so that it is blends in nicely in the 
Feel++ language.

It is particularly useful for the EIM.

Original issue reported on code.google.com by christop...@feelpp.org on 27 May 2012 at 1:14

GoogleCodeExporter commented 9 years ago 
a nice interface would handle something like

LInf( _range=<range of elements on which evaluation occurs>, _points=<set of 
points in the reference elements where the function are evaluated>, _arg=<point 
coordinates at which the maximum absolute value occurs>, _expr=<expression to 
be evaluated> )

Original comment by christop...@feelpp.org on 27 May 2012 at 1:18

GoogleCodeExporter commented 9 years ago

Original comment by christop...@feelpp.org on 27 May 2012 at 9:49

GoogleCodeExporter commented 9 years ago 
This issue was closed by revision 0e4186c874ed.

Original comment by christop...@feelpp.org on 28 May 2012 at 10:24