# Accessing material properties at local matrices building stage

**URL:** <https://community.freefem.org/t/accessing-material-properties-at-local-matrices-building-stage/121>\
**Category:** General Discussion\
**Created:** [August 30, 2019, 4:32pm UTC](https://community.freefem.org/t/accessing-material-properties-at-local-matrices-building-stage/121 "2019-08-30T16:32:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![PavelOganesyan](https://avatars.discourse-cdn.com/v4/letter/p/ee7513/32.png) [@PavelOganesyan](https://community.freefem.org/u/PavelOganesyan)\
**Post date:** [August 30, 2019, 4:32pm UTC](https://community.freefem.org/t/accessing-material-properties-at-local-matrices-building-stage/121/1 "2019-08-30T16:32:02Z")

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Hi!

I’d like to make a fork of FreeFem and try to implement non-homogeneous materials support by changing material properties during local matrices computation process. I got a little confused about specific place where local matrices are build in the FreeFem source. Can anyone point me in the right direction?

Best Regards, Pavel Oganesyan.