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cnalaka
USA
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 Posted - 02/18/2006 : 7:40:19 PM
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Origin Version (Select Help-->About Origin): 7.5 student
Operating System:Windowas XP
Hello,
I have two plots in one graph. I want to subtract one from the other. But i have a problem. The x coordinates of my plots are not the same. Also they are not exactly equally spaced(but close). But the x coordinates are in the same region (-10 to 40). One way of doing this is interpolating both x and y coordinates for each plot. But i am not sure how to do this on Origin.
Thanks,
nalaka |
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Mike Buess
USA
3037 Posts |
Posted - 02/19/2006 : 08:38:02 AM
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nalaka, try Analysis > Subtract > Reference Data.
Mike Buess
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cnalaka
USA
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Posted - 02/19/2006 : 5:40:24 PM
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Hello again,
the way you mentioned will work if the x coordinates are the same in both data set. In my case they are not.
Is there any way to solve this problem?
thanks,
nalaka
Edited by - cnalaka on 02/19/2006 5:41:44 PM |
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73659
USA
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Posted - 02/19/2006 : 5:54:22 PM
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I have tried the method. It works even if the x coordinates are different in the range, number of points and value.
quote:
Hello again,
the way you mentioned will work if the x coordinates are the same in both data set. In my case they are not.
Is there any way to solve this problem?
thanks,
nalaka
Edited by - cnalaka on 02/19/2006 5:41:44 PM
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Mike Buess
USA
3037 Posts |
Posted - 02/19/2006 : 6:40:49 PM
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quote:
I have tried the method. It works even if the x coordinates are different in the range, number of points and value.
Yes, it interpolates automatically if necessary.
Mike Buess
Origin WebRing Member |
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cnalaka
USA
Posts |
Posted - 02/24/2006 : 10:23:12 AM
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HI Guys,
Yes what you guys said is right it works. Does any one know how it calculate this interpolation and the new error?
Nalaka |
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Mike Buess
USA
3037 Posts |
Posted - 02/24/2006 : 10:56:38 AM
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There are several ways to interpolate in Origin. Look for "interpolation" or "Interpolating data" in the index of the Reference (Help>Origin) or Programming guide (Help>Programming).
Mike Buess
Origin WebRing Member |
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subtract plots