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dominik.mierzwa
Poland
118 Posts |
 Posted - 04/27/2015 : 08:41:14 AM
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Origin Ver. and Service Release (Select Help-->About Origin): 9.1 SR1
Operating System:WIndows 7 PRO
Hi,
I have 2 data sets (curve) to average. The problem is that some of single data are masked but "Average multiple curves" tool does not ignore them and use these data for calculation. Can someone explain me how to average these curves without masked data?
Kind regards,
Dominik |
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Hideo Fujii
USA
1582 Posts |
Posted - 04/27/2015 : 5:46:17 PM
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Hi Dominik,
If I understand correctly, the masked data were circumvented by interpolation when you run the
Average Multiple Curves tool; So, say, if you have 3 plots with some segments being masked, the tool
supplies missing parts, and the averaging are executed always with three Y values at any X coordinate.
So, you need to limited the averaged curve only outside of the masked regions. If your data is
organized as XYYY, you can use the Statistics on Rows to produce the mean values at each X coordinate
as shown below.
If your plots are from data being designated like XYXYXY, it may be more complicated - probably
you have to look at all overlapped segments, interpolate, and average only involved plots.
I hope I didn't overlook some easy solutions.
--Hideo Fujii
OriginLab |
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dominik.mierzwa
Poland
118 Posts |
Posted - 04/28/2015 : 02:31:12 AM
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Hi,
Thank you for your reply. Your idea is very good, but unfortunately I have separate XY series for each dataset. However I will try to standardize X for each dataset.
Once again thank you!
Kind regards,
Dominik |
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rumahasi
Indonesia
1 Posts |
Posted - 04/29/2015 : 05:48:40 AM
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almost similar to the problems I had . Awaits further instructions solutions 
Online Babyshop
http://rumahasix.com |
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Hideo Fujii
USA
1582 Posts |
Posted - 04/30/2015 : 2:23:04 PM
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Here is one possible procedure to make an averaged curve from XYXY data:
1) Make a consolidated X column (col(E) in the sample) by copy-and-append from all X columns (col(B) and col(D).
2) Sort this consolidated column.
3) Run "Analysis: Mathematics: Interpolate/Extrapolate Y from X" for the first XY pair based on the consolidated
X (to get col(F)). Do the same for the second XY pair (to get col(G)). (It seems better to turn OFF the recalculation mode.)
4) Mask the Y range corresponds to the original masked X range in the interpolated columns.
5) Run the Statistics on Rows to get the mean values of each row.
Hope this helps.
--Hideo Fujii
OriginLab
P.S. The similar request has already been reported at our issue database, ID=[ORG-11186], and I have added this thread to the request list. |
Edited by - Hideo Fujii on 05/01/2015 10:21:43 AM |
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Topic |
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Average multiple curves and masking.