id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
2088	Mat results get corrupted with variable filters	Teemu Lempinen	Lennart Ochel	"Mat file is corrupted with ""A = B"" equations, if B is filtered out.

To reproduce the problem, simulate the example model below with
{{{
variableFilter="".*[^X]""
}}}

{{{
model Model
    Real Var3;
    parameter Real Var1 = 1;
    Real Var2X( start=0,  fixed=true);
equation
    Var3 = Var2X;
    der(Var2X) =
        + Var1;
end Model;
}}}

The resulting mat file dataInfo block becomes as follows:

{{{
int dataInfo(4,4)
2 1 0 -1
2 2 0 -1
1 2 0 0
0 0 0 0
}}}

If there are more ""A=B"" equations, there are more ""0 0 0 0"" lines. 

What I would like is as follows, but I do not know if it is possible:

If there are equations ""A=C"" and ""B=C"" and the variable C is filtered out, A or B should become the ""primary"" variable for .mat file, store the values of C and the other should refer to those values.

The easy way would be to filter A and B out too. At least that way the results would not be distorted. It took me quite a few hours to realize why my relatively large model was giving wrong results for certain parameter variables.
"	defect	closed	high	1.9.0	Run-time	trunk	fixed