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AKazak
Russia
1205 Posts |
 Posted - 05/19/2022 : 09:28:28 AM
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OriginPro 2022b (64-bit) SR1 9.9.5.167
Windows 7 Pro SP1 x64
Greetings!
I want to linearly interpolate the gaps by using only the end points, but not the whole XY range?
Is there a nice GUI function for doing this?
Or LT is the only solution?
Thank you.
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Andrey |
Edited by - AKazak on 05/19/2022 09:28:48 AM |
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ChaoC
USA
165 Posts |
Posted - 05/19/2022 : 09:51:17 AM
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Hi Andrey,
Can you try Analysis|Mathematics|Interpolate/Extrapolate Y from X?
Chao |
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AKazak
Russia
1205 Posts |
Posted - 05/19/2022 : 10:15:16 AM
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quote:
Originally posted by ChaoC
Hi Andrey,
Can you try Analysis|Mathematics|Interpolate/Extrapolate Y from X?
Chao
Dear Chao,
Thank you for the suggestion.
This seems as a semi-manual solution and doesn't work if a column contains several gaps.
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Andrey |
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snowli
USA
1379 Posts |
Posted - 05/19/2022 : 12:16:28 PM
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Hi Andrey,
When doing Analysis: Mathematics: Interpolate/Extrapolate using Linear method, it does use two neighbouring points to do linear interpolate for many X with that segment.
So u should be able to directly select whole B and to interpolateion. U can set output to be input xy so those empty cells in B will be filled.
Thanks, Snow |
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AKazak
Russia
1205 Posts |
Posted - 05/19/2022 : 12:56:27 PM
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quote:
Originally posted by snowli
Hi Andrey,
When doing Analysis: Mathematics: Interpolate/Extrapolate using Linear method, it does use two neighbouring points to do linear interpolate for many X with that segment.
So u should be able to directly select whole B and to interpolateion. U can set output to be input xy so those empty cells in B will be filled.
Thanks, Snow
Dear Snow,
This was exactly that I was looking for!
Can you add this valuable information to the Analysis:Mathematics:Interpolate/Extrapolate help page, please?
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Andrey |
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snowli
USA
1379 Posts |
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AKazak
Russia
1205 Posts |
Posted - 05/19/2022 : 2:37:23 PM
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quote:
Originally posted by snowli
Hi Andrey,
Could you let me know what to improve in doc?
On Help page of it https://www.originlab.com/doc/Origin-Help/Math-Inter-Extrapolate?f=dl, it does say "Linear interpolation is a fast method of estimating a data point by constructing a line between two neighboring data points"
Thanks, Snow
Dear Snow,
It is currently very clear.
I see nothing to improve.
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Andrey |
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AKazak
Russia
1205 Posts |
Posted - 05/20/2022 : 02:45:48 AM
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I tried to use Analysis:Mathematics:Interpolate/Extrapolate, but it turned out that the function works well if X has fixed positive step (that is proportionaly growing).
The following example shows that the function does not give the correct results:
Is there any workaround?
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Andrey |
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snowli
USA
1379 Posts |
Posted - 05/20/2022 : 10:18:15 AM
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Hi Andrey,
We have Analysis: Mathematics: Trace Interpolation for this but it will evenly space the x values.
Thanks, Snow |
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AKazak
Russia
1205 Posts |
Posted - 05/20/2022 : 11:04:50 AM
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quote:
Originally posted by snowli
Hi Andrey,
We have Analysis: Mathematics: Trace Interpolation for this but it will evenly space the x values.
Thanks, Snow
Dear Snow,
Analysis: Mathematics: Trace Interpolation seems to be a nice tool, but it still doesn't help me doing my task.
For now I made an LT script to do the desired interpolation.
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Andrey |
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snowli
USA
1379 Posts |
Posted - 05/20/2022 : 11:59:29 AM
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I created ORG-25270 for this to see if we should improve it.
Thanks, Snow |
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AKazak
Russia
1205 Posts |
Posted - 05/21/2022 : 01:51:46 AM
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quote:
Originally posted by snowli
I created ORG-25270 for this to see if we should improve it.
Thanks, Snow
I would find the effort to test the improvement in the upcoming beta version.
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Andrey |
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Topic |
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Interpolating gaps in the data