Degrees to Radians

Replies to This Discussion

Permalink Reply by Danny Boyes on March 15, 2011 at 1:49pm

Hi Monique,

 

Thank you for sharing. Also be aware that there is a function that you can use in the expressions that allows you to do this as well. rad() will convert degrees to radians and deg() will convert radians to degrees.

Below I've shown the example using the Fx component but it can be put into any input's expression where you might want to have degrees as the input but GH needs radians.

Permalink Reply by Monique on March 15, 2011 at 2:12pm

Thanks for the reply. I was aware of numerous ways of converting degrees to radians. I  just wanted to provide a shorter-shortcut. ;)

Permalink Reply by David Rutten on March 15, 2011 at 4:37pm

You can even use the degree symbol to convert a number from degrees to radians. So:

 

45º

 

becomes

 

1.7671458676442586966352369030947

 

I find it more readable that way.

 

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by ghotio on March 15, 2011 at 4:40pm

cool

Permalink Reply by Mårten Nettelbladt on March 15, 2011 at 4:45pm

Hi David, how can I do this in a component? When I press Alt (to type Alt+0176) the dialog closes. Is there another way to enter it? Thanks.

Permalink Reply by David Rutten on March 16, 2011 at 5:54am

Darn, I forgot to add the level-1 expression parsing to those input boxes when I rewrote the system a few months ago. You're supposed to be able to use placeholder codes for weird characters like the degree symbol or the pi symbol, but they don't work. I'm fixing it now.

 

Here's the total list of placeholders and what they convert into:

 

'Operators      

code.Replace("**", "┴")      

code.Replace("<cross>", "┴")      

code.Replace("<crossproduct>", "┴")      

code.Replace("<outer>", "┴")

code.Replace("<d>", "°")      

code.Replace("<deg>", "°")      

code.Replace("<degrees>", "°")

code.Replace("<2>", "²")      

code.Replace("<square>", "²")      

code.Replace("<3>", "³")      

code.Replace("<cube>", "³")

code.Replace("<project>", "↓")      

code.Replace("<pull>", "↓")      

code.Replace("<push>", "↑")    

code.Replace("<dist>", "↔")      

code.Replace("<distance>", "↔")

code.Replace("!=", "≠")      

code.Replace("<>", "≠")      

code.Replace("<=", "≤")      

code.Replace("=<", "≤")      

code.Replace(">=", "≥")      

code.Replace("=>", "≥")

code.Replace("<almost>", "≈")      

code.Replace("<almostequal>", "≈")      

code.Replace("<approx>", "≈", )      

code.Replace("<approximately>", "≈")      

code.Replace("<similar>", "≈")      

code.Replace("~", "≈")

'Functions      

code.Replace("<sum>", "∑")      

code.Replace("<sumtotal>", "∑")      

code.Replace("<summate>", "∑")

code.Replace("<prod>", "∏")      

code.Replace("<product>", "∏")

code.Replace("<average>", "Ā")      

code.Replace("<mean>", "Ā")

code.Replace("<hmean>", "Ū")      

code.Replace("<harmonic>", "Ū")      

code.Replace("<harmonicmean>", "Ū")

code.Replace("<gmean>", "Ġ")      

code.Replace("<geometric>", "Ġ")      

code.Replace("<geometricmean>", "Ġ")

'constants      

code.Replace("<pi>", "π")      

code.Replace("<phi>", "φ")      

code.Replace("<inf>", "∞")      

code.Replace("<infinity>", "∞")

code.Replace("<1/2>", "½")      

code.Replace("<0.5>", "½")      

code.Replace("<half>", "½")

code.Replace("<1/4>", "¼")      

code.Replace("<0.25>", "¼")      

code.Replace("<quarter>", "¼")

code.Replace("<3/4>", "¾")      

code.Replace("<0.75>", "¾")      

code.Replace("<threequarters>", "¾")

code.Replace("<1/3>", "⅓")      

code.Replace("<third>", "⅓")

code.Replace("<2/3>", "⅔")      

code.Replace("<twothirds>", "⅔")

 

So you should be able to write:

 

45<deg>

 

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Mårten Nettelbladt on March 16, 2011 at 1:58pm

Ok, thanks!