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Sprenger
Germany
15 Posts |
 Posted - 02/20/2019 : 06:42:25 AM
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Origin Ver. and Service Release (Select Help-->About Origin): Orign2018 b9.5.1.195
Operating System:Windows 10
I am looking for the labtalk command to perform a curve fitting with weigthing
So far this works for the basic curve:
nlbegin iy:=(2,1) func:=boltzmann nltree:=tt;
now I want to add the following Weigths method (an option in the Dialog theme):
"Variance ~ y2"
how can I add this in a labtalk script?
Many thanks
Frank |
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yuki_wu
896 Posts |
Posted - 02/21/2019 : 9:53:44 PM
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Hi Frank,
Try to set weight:=5. As usual, we define No Weight= 0, Instrumental = 1, Statistical = 2…
Regards,
Yuki
OriginLab
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Sprenger
Germany
15 Posts |
Posted - 02/22/2019 : 05:39:04 AM
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OriginVer. 9.6.0.172
Operating System: Windows 10 (1803)
Dear Yuki, many thanks for your suggestion.
I have tried several weight settings, but they seem to be ignored totally, I am always getting the results as if no weight is selected.
With (manual) weight setting (by the interface in fitting window) the results are different. Here are my labtalk commands:
nlbegin iy:=(1,2) func:=boltzmann nltree:=tt weight:=stat;
nlfit;
tt.A1=3.1890203237919
tt.dx=618.24890090712
nlbegin iy:=(1,2) func:=boltzmann nltree:=tt weight:=5;
nlfit;
tt.A1=3.1890203237919
tt.dx=618.24890090712
nlbegin iy:=(1,2) func:=boltzmann nltree:=tt;
nlfit;
tt.A1=3.1890203237919
tt.dx=618.24890090712 |
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Sprenger
Germany
15 Posts |
Posted - 02/22/2019 : 07:24:57 AM
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Orign 2018 SR1
b9.5.1.195
Windows 10
Dear Yuki,
I tried the same commands on the older Orign 2018 version:
Now the weight is used, but (different results when weihgt:=stat is used) but the weight:=5 does not work and gives an error.
The Problem with Origin 2019 seems to be a but that does not recognize the weight et al.
Best
Frank
>>nlbegin iy:=(1,2) func:=boltzmann weight:=stat nltree:=tt;
nlfit;
>>tt.dx=
tt.dx=790.98729516533
>>nlbegin iy:=(1,2) func:=boltzmann nltree:=tt;
nlfit;
>>tt.dx=
tt.dx=618.24890090712
>>nlbegin iy:=(1,2) func:=boltzmann nltree:=tt weight:=5;
nlfit;
Variable value is not in predefined list, VarName = weight, VarValue = 5
#Command Error!
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yuki_wu
896 Posts |
Posted - 02/25/2019 : 02:44:55 AM
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Hi Frank,
I am sorry that it seems a bug. We have added this issue to our bug tracking database(ID: ORG-19744) and it is targeted to be fixed in the next version.
Sorry for the inconvenience.
Thanks,
Yuki
OriginLab
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LabTalk command curve fitting