Hello,
the only thing I found to fit a sin/cos is s.th like lm(a~cos+sin) But
this is not what I want.
I have a magnitude which is sinusoidal with offset and it doesn't start
at phi=0.
The data is:
angle-c(0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,170,180)
Voltage-c(-45.07,
Good morning Markus,
Perhaps ?nls might be useful in this case.
HTH,
Jorge
On Mon, Nov 30, 2009 at 7:19 AM, Markus Häge wrote:
Hello,
the only thing I found to fit a sin/cos is s.th like lm(a~cos+sin) But
this is not what I want.
I have a magnitude which is sinusoidal with offset and it
Jorge Ivan Velez wrote:
Good morning Markus,
Perhaps ?nls might be useful in this case.
Or consult a compendium and realize that both formulas actually fit the
same class of shifted sinusoidals... It holds that
cos(v+phi) = cos phi cos v - sin phi sin v
so you can fairly easily find A and
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