# How do i rotate 90 degrees **URL:** \ **Category:** Geometry\ **Tags:** civil3d\ **Created:** [June 2, 2020, 10:38pm UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343 "2020-06-02T22:38:30Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![richsurveyor](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/richsurveyor/32/97230_2.png) [@richsurveyor](https://forum.dynamobim.com/u/richsurveyor)\ **Post date:** [June 2, 2020, 10:38pm UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/1 "2020-06-02T22:38:30Z")
I need to create line at 60 ft interval along a polyline. line need to be at 90 degrees to the polyline. I have tried various rotate nodes. to no avail. ![rotate](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/5/f/5f06de6de7d22936fb30b15a2deb7a3e52f0339e.png) ![rotate_dwg](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/4/e/4e714bcea4e03ba29e408a2907c796a7fe26bd4e.jpeg) ---
**Author:** ![SeanP](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/seanp/32/42560_2.png) [@SeanP](https://forum.dynamobim.com/u/SeanP)\ **Post date:** [June 3, 2020, 1:38am UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/2 "2020-06-03T01:38:29Z")
Why not just translate the end point and create the line in the correct direction rather than rotation? ---
**Author:** ![richsurveyor](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/richsurveyor/32/97230_2.png) [@richsurveyor](https://forum.dynamobim.com/u/richsurveyor)\ **Post date:** [June 3, 2020, 1:48am UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/3 "2020-06-03T01:48:47Z")
Can you show me an example of that. Sorry I am very new at Dynamo Thank you for your reply ---
**Author:** ![richsurveyor](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/richsurveyor/32/97230_2.png) [@richsurveyor](https://forum.dynamobim.com/u/richsurveyor)\ **Post date:** [June 3, 2020, 1:58am UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/4 "2020-06-03T01:58:11Z")
[working.dyn](https://forum.dynamobim.com/uploads/short-url/Ajcj1zYTOKxofM15yWECYfTqwGk.dyn) (35.0 KB) here is the dyn file for your review ---
**Author:** ![jacob.small](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jacob.small/32/161030_2.png) [@jacob.small](https://forum.dynamobim.com/u/jacob.small)\ **Post date:** [June 3, 2020, 2:38am UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/5 "2020-06-03T02:38:52Z")
Perhaps those nodes would help: Curve.CoordinateSystemAtParameter Geometry.Transform ---
**Author:** ![richsurveyor](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/richsurveyor/32/97230_2.png) [@richsurveyor](https://forum.dynamobim.com/u/richsurveyor)\ **Post date:** [June 3, 2020, 4:15am UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/6 "2020-06-03T04:15:00Z")
Thank you Jacob I’m going to try a math function ---
**Author:** ![Kulkul](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/kulkul/32/49801_2.png) [@Kulkul](https://forum.dynamobim.com/u/Kulkul)\ **Post date:** [June 3, 2020, 5:42am UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/7 "2020-06-03T05:42:02Z")
> [@richsurveyor](#): > > I’m going to try a math function Why do you need math function for simple task? > [@richsurveyor](#): > > I need to create line at 60 ft interval along a polyline. > line need to be at 90 degrees to the polyline. Image which you posted looks like you already done that. 90 degree to polyline. ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/9/1/91a0474284cc79a56a8632c23fc37b65008e893e.png) What is your end goal? ---
**Author:** ![richsurveyor](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/richsurveyor/32/97230_2.png) [@richsurveyor](https://forum.dynamobim.com/u/richsurveyor)\ **Post date:** [June 3, 2020, 5:52am UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/8 "2020-06-03T05:52:30Z")
That image is the end goal But I did it in civil 3d. If you run the attached dyn you will see the lines at 60 ft intervals are in the direction of the polyline. I need the vector to be rotated ---
**Author:** ![Ge0rges](https://avatars.discourse-cdn.com/v4/letter/g/278dde/32.png) [@Ge0rges](https://forum.dynamobim.com/u/Ge0rges)\ **Post date:** [June 4, 2020, 12:02am UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/9 "2020-06-04T00:02:37Z")
Hi! Here’s a try. But it only works for simple polylines (no arcs). ![working_2020-06-03_07-51-18](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/3/c/3c7332161eba26e610dceb49de323e49d7f53d5c.png) ---
**Author:** ![richsurveyor](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/richsurveyor/32/97230_2.png) [@richsurveyor](https://forum.dynamobim.com/u/richsurveyor)\ **Post date:** [June 4, 2020, 12:16am UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/10 "2020-06-04T00:16:26Z")
Thank you for taking the time to look at it I’ll give it a try ---
**Author:** ![richsurveyor](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/richsurveyor/32/97230_2.png) [@richsurveyor](https://forum.dynamobim.com/u/richsurveyor)\ **Post date:** [June 4, 2020, 1:58am UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/11 "2020-06-04T01:58:00Z")
does not work. ill keep trying ---
**Author:** ![Kulkul](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/kulkul/32/49801_2.png) [@Kulkul](https://forum.dynamobim.com/u/Kulkul)\ **Post date:** [June 4, 2020, 3:30am UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/12 "2020-06-04T03:30:38Z")
> [@richsurveyor](#): > > does not work. Why it doesn’t work for you? I just tried @Ge0rges method it does work for me : ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/c/2/c2dfeb67359f08205baaf297da403b1a3cf94313.png) ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/1/6/16c8b238bb2337b10684bccd8d101fa4815dee09.png) [working\_.dyn](https://forum.dynamobim.com/uploads/short-url/zzFmTQzrBcDZ8UpZb3iXZqqpS7a.dyn) (49.3 KB) ---
**Author:** ![richsurveyor](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/richsurveyor/32/97230_2.png) [@richsurveyor](https://forum.dynamobim.com/u/richsurveyor)\ **Post date:** [June 4, 2020, 4:06am UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/13 "2020-06-04T04:06:21Z")
Thank you I’ll try again. I was getting lines that were not 90 degrees from polyline ---
**Author:** ![richsurveyor](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/richsurveyor/32/97230_2.png) [@richsurveyor](https://forum.dynamobim.com/u/richsurveyor)\ **Post date:** [June 4, 2020, 2:25pm UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/14 "2020-06-04T14:25:21Z")
Ge0rges This is the solution Thanks again for taking the time ---
**Author:** ![richsurveyor](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/richsurveyor/32/97230_2.png) [@richsurveyor](https://forum.dynamobim.com/u/richsurveyor)\ **Post date:** [June 4, 2020, 2:26pm UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/15 "2020-06-04T14:26:22Z")
Thank you Kulkul for your input it sure does work ---
**Author:** ![Kulkul](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/kulkul/32/49801_2.png) [@Kulkul](https://forum.dynamobim.com/u/Kulkul)\ **Post date:** [June 4, 2020, 2:30pm UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/16 "2020-06-04T14:30:54Z")
> [@richsurveyor](#): > > it sure does work Then mark the post as solved. ---
**Author:** ![richsurveyor](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/richsurveyor/32/97230_2.png) [@richsurveyor](https://forum.dynamobim.com/u/richsurveyor)\ **Post date:** [June 4, 2020, 2:35pm UTC](https://forum.dynamobim.com/t/how-do-i-rotate-90-degrees/51343/17 "2020-06-04T14:35:00Z")
done