# Direction of continuation

**URL:** <https://discourse.channelflow.ch/t/direction-of-continuation/71>\
**Category:** Usage\
**Created:** [August 1, 2019, 3:54pm UTC](https://discourse.channelflow.ch/t/direction-of-continuation/71 "2019-08-01T15:54:36Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![pavan](https://avatars.discourse-cdn.com/v4/letter/p/439d5e/32.png) [@pavan](https://discourse.channelflow.ch/u/pavan)\
**Post date:** [August 1, 2019, 3:54pm UTC](https://discourse.channelflow.ch/t/direction-of-continuation/71/1 "2019-08-01T15:54:36Z")

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Hello,

In continuesoln.cpp, the input parameter “up” that was present in the previous version of the code which could direct the continuation along the increasing parameter direction is not available in the newer version. Can anyone guide me towards what has been its replacement ?

I tried giving a negative value to the “-ds0” parameter, but that also did not change the direction.

Regards,

Pavan

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**Author:** ![florian.reetz](https://yyz1.discourse-cdn.com/flex027/user_avatar/discourse.channelflow.ch/florian.reetz/32/12_2.png) [@florian.reetz](https://discourse.channelflow.ch/u/florian.reetz)\
**Post date:** [August 2, 2019, 5:44am UTC](https://discourse.channelflow.ch/t/direction-of-continuation/71/2 "2019-08-02T05:44:32Z")

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Dear Pavan,

your idea was good. It is however not “-ds0” which works this way. You can choose the direction via the sign of “-dmu”. The default is positive. “mu” in channelflow is the alias for a natural parameter (system parameter, box size, etc).

Best wishes,  
Florian

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**Author:** ![pavan](https://avatars.discourse-cdn.com/v4/letter/p/439d5e/32.png) [@pavan](https://discourse.channelflow.ch/u/pavan)\
**Post date:** [August 2, 2019, 3:10pm UTC](https://discourse.channelflow.ch/t/direction-of-continuation/71/3 "2019-08-02T15:10:28Z")

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Hello Florian,

Thank you very much !!

Regards,

Pavan