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 NLFW - Boltzmann		  New Topic  Reply to Topic
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shiuyeung.hui

Denmark
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Posted - 04/02/2007 :  10:20:52 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Version (Select Help-->About Origin): 7.5
Operating System: xp

Hello,

I am trying to do a Boltzmann fit on the data below, but the NLFW returns a flat line. I have tried it also with improved initial values for A1 and A2 and Xo as well. Your suggestions would be greatly appreciated.

Thank you!

X Y
-0.11 -3.7011E-11
-0.1 -4.2803E-11
-0.09 -4.5873E-11
-0.08 -4.2543E-11
-0.07 -5.4576E-11
-0.06 -7.9916E-11
-0.05 -3.8446E-10
-0.04 -2.7955E-9
-0.03 -2.3239E-8
-0.02 -3.0477E-8
-0.01 -2.1079E-8
0 -2.4876E-8
0.01 -2.4626E-8
0.02 -2.2184E-8
0.03 -3.5339E-8
0.04 -2.3292E-8

larry_lan

China
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Posted - 04/02/2007 :  10:43:27 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Friend:

You just need one more step: Change the initial value for dx to 0.001.

Larry
OriginLab Technical Services
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shiuyeung.hui

Denmark
Posts
Posted - 04/16/2007 :  03:37:13 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
ok thank you very much. once i have improved all 4 parameters (A1, A2, x0, dx), it seems to match our expected outcomes.
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