Arrow length and rotation statistics

[StevieBlueboat]

A very useful feature, to me, is how LibreDraw indicates the length and direction (rotation) when drawing arrow. (Illustration provided) This is very useful for calculating speed, course and headings for navigation plots. But one thing would be a stellar feature in this application.

As standard convention, rotation is positive in degrees from 0 being at the 3 o’clock position on the page, as you rotate counter-clockwise. However, is there any way at all to set 0 (North, in my case) at the top of the page (12 o’clock position)?

I could live without it, but in the same vein… can rotation be counted clockwise instead?

Thanks. Inquiring minds would like to know.

[EarnestAl]

AKAIK you can’t change those settings.
You could use a spreadsheet to do the calculations for you. Something like =360-MOD(A2-90;360) should work, where A2 contains the angle you want to convert and B2, with the formula, shows the angle you need to enter