# Slip Function Liu Cosine

**URL:** <https://community.geodynamics.org/t/slip-function-liu-cosine/2624>\
**Category:** PyLith\
**Tags:** installation\
**Created:** [October 12, 2022, 9:20pm UTC](https://community.geodynamics.org/t/slip-function-liu-cosine/2624 "2022-10-12T21:20:34Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![DRCCGEO](https://yyz2.discourse-cdn.com/flex036/user_avatar/community.geodynamics.org/drccgeo/32/578_2.png) [@DRCCGEO](https://community.geodynamics.org/u/DRCCGEO)\
**Post date:** [October 12, 2022, 9:20pm UTC](https://community.geodynamics.org/t/slip-function-liu-cosine/2624/1 "2022-10-12T21:20:34Z")

</div>

Hello, when I try to run a script with pylith 3.3.0, for a 3D subduction zone with coseismic slip, I have the following error:

component ‘pylith.faults.KinSrcLiuCosine’ not found

Is the KinSrcLiuCosine implemented in this version?

Thanks, for your help.

---

<div class="post-metadata">

**Author:** ![baagaard](https://yyz2.discourse-cdn.com/flex036/user_avatar/community.geodynamics.org/baagaard/32/615_2.png) [@baagaard](https://community.geodynamics.org/u/baagaard)\
**Post date:** [October 12, 2022, 9:36pm UTC](https://community.geodynamics.org/t/slip-function-liu-cosine/2624/2 "2022-10-12T21:36:29Z")

</div>

[https://pylith.readthedocs.io/en/latest/user/physics/faults/prescribed-slip.html#liu-cosine-slip-time-function-kinsrcliucosine](https://pylith.readthedocs.io/en/latest/user/physics/faults/prescribed-slip.html#liu-cosine-slip-time-function-kinsrcliucosine)