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avoid sharp picks _convergence problem
Posted Jan 5, 2011, 5:51 a.m. EST Studies & Solvers 2 Replies
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Dear All,
Do you have any idea how I can smooth this expression?
B=1/A*(A!=0)+0*(A==0)
Many thanks in advance,
Elham
Do you have any idea how I can smooth this expression?
B=1/A*(A!=0)+0*(A==0)
Many thanks in advance,
Elham
2 Replies Last Post Jan 5, 2011, 12:31 p.m. EST
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Posted:
1 decade ago
Hi
have you tried
1/(A+eps)
if A is only >0 or only <0 it could work
or
if(A==0,0,1/A)
this might work
See the users Guide p81:
Use the if operator to avoid illegal operations. For example, if(x==0,1,sin(x)/x) is a valid and continuous expression for all values of x, including x = 0.
--
Good luck
Ivar
have you tried
1/(A+eps)
if A is only >0 or only <0 it could work
or
if(A==0,0,1/A)
this might work
See the users Guide p81:
Use the if operator to avoid illegal operations. For example, if(x==0,1,sin(x)/x) is a valid and continuous expression for all values of x, including x = 0.
--
Good luck
Ivar
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Posted:
1 decade ago
Thank you ivar. what I've written and you suggest seem to be equivalant. apparantly, this kind of if condition shouldn't make convergence problem. I need to look for other sources of problem.
regards,
Elham
regards,
Elham