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I’m trying to make a model with inhomogeneous properties, using cell builder. But found that I could not use inhomogeneous Ra (axial resistance) with this approach. How can I solve this problem? On the other hand if there is no way solving this problem using GUI can I export my project and solve this problem using SubsetDomainIterator class? And also if answer is negative how can I solve this problem at hoc level (simplest way)? I've done

Ps: On the other hand I’ve done rest of my project with SubsetDomainIterator class, if I'm compelled to usu hoc level method how can I adjust hoc level method with SubsetDomainIterator class's method because it is possible that different p (i.e. ex distance from soma in cell builder) resulted from different methods?)

Cordially
Keivan

Ra is a section variable, not a range variable. That is, Ra has the same value along the
entire length of a section. You could write your own code to do something similar. The first
step would be to create a new class similar to the SubsetDomainIterator in all respects
except for two:
1. (trivial) it would have a different name
and
2. (essential but easy to do) in its iterator loop() change to Some other changes may also be necessary, e.g. how you call this modified iterator,
because Ra(x) produces an error message (since Ra is not a range variable).

Thank you very much, your answer was very helpful for me. I Also changed the code a litle bit more to this in order to adjust the p value to x value.