# How i include the ffmathlib Commnad on FreeFem++ data

**URL:** https://community.freefem.org/t/how-i-include-the-ffmathlib-commnad-on-freefem-data/3218
**Category:** General Discussion
**Created:** [May 5, 2024, 5:59am UTC](https://community.freefem.org/t/how-i-include-the-ffmathlib-commnad-on-freefem-data/3218 "2024-05-05T05:59:45Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Monirul25](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/monirul25/32/3287_2.png) [@Monirul25](https://community.freefem.org/u/Monirul25)
#### Post date: [May 5, 2024, 5:59am UTC](https://community.freefem.org/t/how-i-include-the-ffmathlib-commnad-on-freefem-data/3218/1 "2024-05-05T05:59:45Z")

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Can you tell me how i include ffmatlib command to FreeFem++ codes. According to the online doccumentation of FreeFem++, i have included it but it showing error. Whether i have to install some packages for it.  
[matlab\_octave\_2d\_examples.edp](https://community.freefem.org/uploads/short-url/moiqNTjuuQDiUbI5DApMxtTLU7g.edp) (1.3 KB)

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### Author: ![clthu](https://avatars.discourse-cdn.com/v4/letter/c/f04885/32.png) [@clthu](https://community.freefem.org/u/clthu)
#### Post date: [May 5, 2024, 6:27am UTC](https://community.freefem.org/t/how-i-include-the-ffmathlib-commnad-on-freefem-data/3218/2 "2024-05-05T06:27:41Z")

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Maybe you could look into the StabFem, which might give you some ideas how to use matlab or octave to postprocess the results.