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 Merging Channels from ADC measurement		  New Topic  Reply to Topic
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RaphBilder

4 Posts
Posted - 06/01/2022 :  04:28:37 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hi,
I am trying to use Origin to display the data I measured in a column plot.
I want to merge some channels of my ADC measurement (meaning that I want to add up the values for a certain number of channels and display them as one column).
How can I do that?
I also uploaded the data.

Origin Ver. and Service Release: 9.9.5.167
Operating System: Windows 10
Edited by - RaphBilder on 06/01/2022 04:33:05 AM

Shirley_GZ

China
Posts
Posted - 06/02/2022 :  01:55:30 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi RaphBilder,

We didn't see any data in this post. Please upload it again and give us the download link.

Generally, if you just want to add up multiple dataset, you can import them into different columns and then use Set Column Values tool.
https://www.originlab.com/doc/Origin-Help/Wks-SetColVal-QuickStart

Thanks,
Shirley

Originlab Technical Service Team
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RaphBilder

4 Posts
Posted - 06/02/2022 :  2:26:35 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,
I've uploaded it in Google Drive now. Here's the link: https://drive.google.com/file/d/1A3JTIW7qxBQVv6haP9J3VoDsB1fk22BS/view?usp=sharing

I found that tool but I couldn't get it to do what I want.

I basically want to have sum of the first 5 values of the data in the first cell, the sum of the second 5 values in the second cell and so on.
In the data provided that would work out to
0
0
0
0
0
0
1
1
8
12
and so on.

But not with only with 5 but with an odd variable x.
Then I can calculate the middle of each data point with:
z = (x+1)/2 + (y-1) * x
with y as the current cell.

So then the sum needs to reach from z-(x+1)/2 to z+(x+1)/2.

I also found the total function for calculating a sum, but I total(B[z-(x+1)/2 : z+(x+1)/2]) (with the data in Column B) didn't seem to work.

Edit: Changed column to cell
Edited by - RaphBilder on 06/03/2022 04:26:51 AM
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cpyang

USA
1406 Posts
Posted - 06/02/2022 :  4:11:25 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
You said second 5 values in second column? But looks like you want to use column A as source and put result into column B with sum of each 5 values right?

CP
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YimingChen

1649 Posts
Posted - 06/02/2022 :  4:26:11 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
You can use Python function in Origin to calculate group sum in col(B). See below:

import numpy as np

def group_sum(x, win):
    '''F:Fi'''
    return np.add.reduceat(x, np.arange(0, len(x), win))





James
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RaphBilder

4 Posts
Posted - 06/03/2022 :  04:30:38 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,
thank you very much for your help.
I tried using your code but my results are different. It just puts a -- in every cell. What could be the reason for that?
In addition Origin changes the , in py.group_sum(A, 5) to a . (py.group_sum(A. 5)) when I close the window and reopen it.
Could that be connected?
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cpyang

USA
1406 Posts
Posted - 06/03/2022 :  11:43:43 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
use ; instead,

py.group_sum(A;5)


Looks like your PC is using "," as decimal separator. The Python or Labtalk part will still use comma, but the formula part we need to allow for comma as decimal so must use ; to separator function arguments.

CP
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RaphBilder

4 Posts
Posted - 06/03/2022 :  11:56:58 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
That works!
Thank you very much!
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snowli

USA
1417 Posts
Posted - 06/23/2022 :  4:49:58 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hello,

We just released Origin 2022b sr1 which will auto convert , to ; for this case so u don't need to manually change it to ;

Please feel free to download sr1 installer and choose Repair to upgrade your Origin.
https://www.originlab.com/restricted/demo_download/DLRequest.aspx?rq=dl&d=1&s=E

Thanks, Snow
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