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ungat

Belgium
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Posted - 05/23/2006 :  07:34:34 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:Win XP MCE 2005

Hello everybody,

I would like smoothing curve using S-G method; I tried this:

//Open a new worksheet
win -t data Origin;
//Import sample file
open -w %YSamples\Data\Data with noise.dat;
//Create a column for results
wks.addcol(Result);
//Assign datasets
curve.data$ = DataWithNoise_Signal;
curve.result$ = DataWithNoise_Result;
curve.polyDeg=3;
curve.smoothLeftPts=3;
curve.smoothRightPts=3;
curve.SGSmooth();

But it doesn't work;

could someone help me please?

Thank you very much,

B.R.

Mike Buess

USA
3037 Posts
Posted - 05/23/2006 :  09:08:53 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
You must also use curve.smoothPts=7 or that property will default to 5 and curve.smoothLeft(Right)Pts will revert to 2.

Mike Buess
Origin WebRing Member
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ungat

Belgium
Posts
Posted - 05/23/2006 :  09:21:01 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
quote:

You must also use curve.smoothPts=7 or that property will default to 5 and curve.smoothLeft(Right)Pts will revert to 2.

Mike Buess
Origin WebRing Member


Thank you, but why curve.smoothPts=7 (why 7 ?) and why curve.smoothLeft(Right)Pts=2 ? I would like curve.smoothLeft(Right)Pts=3 or 5, is it possible ?
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Mike Buess

USA
3037 Posts
Posted - 05/23/2006 :  10:34:08 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
curve.smoothLeftPts=3;
curve.smoothRightPts=3;
curve.smoothPts=7; // 3 on left + 3 on right + center pt

The curve object does not do the math on its own so you must set all three properties.

Mike Buess
Origin WebRing Member
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ungat

Belgium
Posts
Posted - 05/23/2006 :  11:28:35 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
quote:

curve.smoothLeftPts=3;
curve.smoothRightPts=3;
curve.smoothPts=7; // 3 on left + 3 on right + center pt

The curve object does not do the math on its own so you must set all three properties.

Mike Buess
Origin WebRing Member


Ok thank you, and for Polynomial Order? I want 3, is curve.polyDeg=3 good ?
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Mike Buess

USA
3037 Posts
Posted - 05/23/2006 :  12:39:50 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
quote:
Ok thank you, and for Polynomial Order? I want 3, is curve.polyDeg=3 good ?
Yes... according the programming guide its values can range from 1 to 9.

Mike Buess
Origin WebRing Member
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