On Mon, Mar 31, 2008 at 02:26:45PM +0200, Kristen Kaasbjerg wrote:
Hi,
I would like to plot a function that is the difference between a
DiscreteFunction and a UserFunction. Can this be done in any smart ways ?
The only way I can think of is to create a new user defined function
that contains the two Functions above, which does the subtraction in the
eval function, and then save this function to vtk format.
This, however, will call the eval method of the DiscreteFunction which
includes cell searching etc. Just sounds a bit cumbersome to me when the
mesh contains say 500.000 elements.
Kristen
I would recommend to project the difference to an appropriate finite
element space and then plot the projection.
