The Origin Forum

File Exchange

Try Origin for Free

The Origin Forum

All Forums

Origin Forum for Programming

LabTalk Forum

X-error in NLSF

Note: You must be registered in order to post a reply.
To register, click here. Registration is FREE!

Screensize:

UserName:

Password:

Anti-Spam Code:

Format Mode:

Format:

Message:

* HTML is OFF
* Forum Code is ON

Smilies

[quote][i]Originally posted by Belsinga[/i]
[br]Origin Ver. and Service Release (Select Help-->About Origin): 8 SR 6
Operating System: Win XP

Dear all,

I need to know how I can fit a dataset with nlsf, where the error in x is situated in a column. When I dedicate this column as "X-error", the script delivers the following error:

"External call error"

If this column (with x errors) is used as regular Y values, I can fit the data, but it uses the column as "Y-error". Can someone help me?

Thanks in advance

(in the code, FT_Q2 is the name of the column where my values for x-error are.)

******************************************
code:

nlsf.cleanupfitdata(); 	
	nlsf.func$ = Allometric1; 
	a=1;							
	b=1;
		
	nlsf.numfitsets = 1;
	nlsf.numIndep = 1;
	
	nlsf.dataBegin = 1; 					
	nlsf.dataEnd =  vsA; 
	limit FT_Cell3;
	nlsf.fitdata1$ = FT_Cell3; 
	nlsf.funcx$ = FT_Transmit; 
	nlsf.w$ = FT_Q2;
	nlsf.wtype = 1;
		
	nlsf.xPoints = vsA;
	nlsf.fit(100);
	nlsf.makecurve(func); 
	nlsf.pasteParams(R); 
	nlsf.paramWks(Param_cell3);
[/quote]

Check here to include your profile signature.
Check here to subscribe to this topic.

T O P I C R E V I E W
Belsinga	Posted - 10/25/2010 : 08:17:32 AM Origin Ver. and Service Release (Select Help-->About Origin): 8 SR 6 Operating System: Win XP Dear all, I need to know how I can fit a dataset with nlsf, where the error in x is situated in a column. When I dedicate this column as "X-error", the script delivers the following error: "External call error" If this column (with x errors) is used as regular Y values, I can fit the data, but it uses the column as "Y-error". Can someone help me? Thanks in advance (in the code, FT_Q2 is the name of the column where my values for x-error are.) ****************************************** code: nlsf.cleanupfitdata(); nlsf.func$ = Allometric1; a=1; b=1; nlsf.numfitsets = 1; nlsf.numIndep = 1; nlsf.dataBegin = 1; nlsf.dataEnd = vsA; limit FT_Cell3; nlsf.fitdata1$ = FT_Cell3; nlsf.funcx$ = FT_Transmit; nlsf.w$ = FT_Q2; nlsf.wtype = 1; nlsf.xPoints = vsA; nlsf.fit(100); nlsf.makecurve(func); nlsf.pasteParams(R); nlsf.paramWks(Param_cell3);
2 L A T E S T R E P L I E S (Newest First)
Belsinga	Posted - 10/28/2010 : 09:01:45 AM Ok, But what about leaving the x-error column in the worksheet (still defined as "x-err"). Won't Origin pick this up automatically as an uncertainty? Thanks, Boudewijn
larry_lan	Posted - 10/26/2010 : 01:53:22 AM Hi: Origin neither supports fitting X-Error as weight, nor fitting dataset that set as X-Error. If you want to keep FT_Q2 as "X-Error" column type, maybe you can duplicate it as "Y" (or Y-Error) column type and use data in this new column as weights. Thanks Larry OriginLab

The Origin Forum

Snitz Forums 2000