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micaccael
Switzerland
2 Posts |
 Posted - 06/14/2013 : 09:52:30 AM
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Origin Ver. and Service Release (Select Help-->About Origin): 9.0.0 (64)
Operating System:windows 7
Hi everyone,
I want to make a perfect curve out of some points on a ternary diagram.
Initially i thought that "Analysis>mathematics>average multiple points" was the right path to do that, the problem is that the results is quite different from what i've expected (see link of the picture).
http://imageshack.us/photo/my-images/208/t2r5.jpg/
In the picture the curve skip a point...
Do you have any suggestion?
Thank you.
Daldini Michael |
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Shirley_GZ
China
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Posted - 06/17/2013 : 06:58:57 AM
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Hi Micaccael,
I can't understand you well. Do you want to interpolate or fit a ternary curve? Please tell us more details.
Originlab Technical Service Team |
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easwar
USA
1964 Posts |
Posted - 06/20/2013 : 12:24:42 PM
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Hi Michael,
Looks to me that you want to just create a smoothed-interpolated curve from the data points in your ternary plot, using say spline interpolation?
If this is what you want, then:
1> Go to the worksheet that has the XYZ data for your ternary plot
2> Select the Z column and invoke the menu item: Analysis->Mathematics->XYZ Trace Interpolation
3> In that dialog, specify number of points and the interpolation method
4> The result will be a new set of XYZ columns
5> Click and select the new Z column and drag and drop that column onto your ternary graph - you may need to change plot style to line, for this 2nd data plot
Easwar
OriginLab
P.S. A colleague pointed out that if are just looking for a smooth curve in the graph for display purposes, and don't need the interpolated numbers, you can do the following instead:
1> Change the original data plot to line+symbol
2> In Plot Details dialog, go to the Line tab and set the line connection style to spline for example.
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micaccael
Switzerland
2 Posts |
Posted - 06/21/2013 : 10:30:17 AM
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Easwar, Shirley_GZ,
First at all thank you very much for your attention.
I would like to fit a curve, between the points.
@Shirley_GZ: I tried your method but how you can see in the picture, the black curve is what results. I would like to have a curve like the red one (this is really approximative, it's made using paint).
http://imageshack.us/photo/my-images/507/nbix.png/
How can you see in the second picture, for this data the method mathematic>average multiple points worked well (black dots are the analyzed datas and the curve is the one created with the average points).
http://imageshack.us/photo/my-images/443/absr.png/
I think that if i will not find a solution i will draw it with paint ;)
Thank you again for responding me, I appreciate your help.
Best regards,
Daldini Michael |
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Perfect fitting of a curve ternary diagram