Convert angle range from -180 180 to 0 360?


    Sep 11 2012 | 10:19 am
    Hi all,
    A silly problem which I ran into several times and always worked around but never quite solved. I have an angle in the range of -180 to 180 and want to convert it to a range from 0 to 360... Any pointers?

    • Sep 11 2012 | 10:42 am
      not sure if i get it - but how about addition? + 180?
      :?
    • Sep 11 2012 | 10:54 am
      scale object
      "scale -180 180 0 360"
    • Sep 11 2012 | 11:20 am
      The number is a rotation, a heading. Say 0 is in 'front', -180/180 is in the 'back'. After the conversion 0/360 should be in 'front', 180 in the 'back'. While both solutions will give a number between 0 and 360, the 'front' will be 180
    • Sep 11 2012 | 1:04 pm
      try [expr ($i1+360)%360]
      mathieu
    • Sep 11 2012 | 5:27 pm
      Assuming your input is always in the range [-180 .. 180], you could do [if $i1 >= 0 then $i1 else out2 $i1] and pass the rightmost outlet through a [+ 360] object. Leftmost of the [if] and the [+ 360] outlet both connect to the further processing.
      But there are a gazillion other ways to do this. Some are more robust for input values outside the specified range.
    • Sep 12 2012 | 1:12 pm
      Thanks Mathieu; that works like a charm!