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How to do "if---else" in comsol GUI?
Posted 2011年1月22日 GMT-5 11:28 Parameters, Variables, & Functions Version 4.0 1 Reply
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How to write the equivalent "phi" expression in GUI according to the codes below ?
if x==0
if y>0
phi=0.5*pi
else
phi=-0.5*pi
else if x>0
if y>0
phi=atan(y/x)
else
phi=2*pi+atan(y/x)
else
phi=pi+atan(y/x)
ps: x, y are the space independent variables, phi is a user-defined variable
my ways is: phi=(x==0&&y>0)*(0.5*pi)+(x==0&&y<=0)*(-0.5*pi)+(x>0&&y>0)*(atan(y/x))+(x>0&&y<=0)*(2*pi+atan(y/x))+(pi+atan(y/x)). Is it right? or are there better ones?
if x==0
if y>0
phi=0.5*pi
else
phi=-0.5*pi
else if x>0
if y>0
phi=atan(y/x)
else
phi=2*pi+atan(y/x)
else
phi=pi+atan(y/x)
ps: x, y are the space independent variables, phi is a user-defined variable
my ways is: phi=(x==0&&y>0)*(0.5*pi)+(x==0&&y<=0)*(-0.5*pi)+(x>0&&y>0)*(atan(y/x))+(x>0&&y<=0)*(2*pi+atan(y/x))+(pi+atan(y/x)). Is it right? or are there better ones?
1 Reply Last Post 2011年1月22日 GMT-5 12:34
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Posted:
1 decade ago
Hi
I have seen the "if()" way, your way and the one replacing the && and ¦¦ by */+ i believe all work, but have newer tested the issue w.r.t speed, have you tried these variants as "functions" and used COMSOL to plot them ? That's my way to test the equations.
--
Good luck
Ivar
I have seen the "if()" way, your way and the one replacing the && and ¦¦ by */+ i believe all work, but have newer tested the issue w.r.t speed, have you tried these variants as "functions" and used COMSOL to plot them ? That's my way to test the equations.
--
Good luck
Ivar