http://www.fenics.org/cgi-bin/bugzilla/show_bug.cgi?id=41
Summary: Matrix class assignment option is not working
Product: DOLFIN
Version: development version
Platform: PC
OS/Version: Linux
Status: NEW
Severity: enhancement
Priority: P2
Component: features
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
Hi
Isn't this code supposed to work? It gives me "invalid lvalue in
assignment" error while compiling. How should I assign the elements of
a Matrix???
//-------------------------------
int main()
{
for(i=0; i<nens; i++)
.
.
.
real* values = new real[nstat];
u1.interpolate(values);
Matrix S(nstat,nens);
for(int j=0;j<nstat;j++)
{
S(j,i)=values[j];
}
}
answer from Anders logg:
Sorry, this doesn't work yet.
We can easily fix this in the GenericMatrix interface by adding an
auxiliary class MatrixEntry (which just holds (i, j) and a reference
to the matrix) and have operator() return that, then overload
operator= in MatrixEntry to assign to the matrix.
We had this in DOLFIN 2-3 years back but the linear algebra has gone
through several reimplementations since then...
Until this has been implemented, you can use the setitem() function.
And please file a bug report for this. Mark it as "enhancement".
--
Anders
--
Configure bugmail:
http://www.fenics.org/cgi-bin/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.
_______________________________________________
DOLFIN-dev mailing list
[email protected]
http://www.fenics.org/mailman/listinfo/dolfin-dev
