topic Re: Script in DIAdem

Script

say12 — Tue, 18 Apr 2017 09:11:12 GMT

Hello,

i'm triyng to write a script that call tha channels which are in the internal data in order to calculate the mean of them. what can i write please ?

Re: Script

Christian-P — Tue, 18 Apr 2017 11:16:55 GMT

Hi say,

Where's the difference to your questions here?

http://forums.ni.com/t5/DIAdem/Macro-script/td-p/3610527

http://forums.ni.com/t5/DIAdem/Mean/td-p/3613342

http://forums.ni.com/t5/DIAdem/script-Mean/td-p/3614017

It does not help to open multiple threads for the same question and it will not be faster.

You will also find lots of documentation and examples in the internet and installed with DIAdem to do a calculation of mean values.

Here are some examples:

http://zone.ni.com/reference/en-XX/help/370858M-01/dlgmaths/calc_statistics_dlg/dlgstatblockcalc_dialog/

http://zone.ni.com/reference/de-XX/help/370858M-0113/comoff/chnaverage/

http://forums.ni.com/t5/DIAdem/How-do-you-do-an-average-of-only-ONE-channel-in-analysis/td-p/1498638

If this does not help, please provide detailed information first, so we can help you to solve the problem.

Regards

Re: Script

say12 — Wed, 19 Apr 2017 06:35:20 GMT

Hello christian,

Thank you for your message .To better explain what i mean , attached the script that i wrote to have the mean of three test, i want. i want to have the same script but that allows to have this mean whatever the number of test i have. i thought to run it in a loop but i did not know how to write it !

Regards

Re: Script

Christian-P — Wed, 19 Apr 2017 09:24:45 GMT

You can do it like this and you will not need a loop at all:

dim ForceChnList
set ForceChnList = Data.GetChannels("*/force")
call Data.Root.ChannelGroups.Add("Results").Activate()
call ChnAverage(ForceChnList, "/Mean")

The GetChannels command searches for all channels with name "force" in all groups and will return an ElementList that can be used with ChnAverage command.

http://zone.ni.com/reference/en-XX/help/370858M-01/inavidata/objects/diacmpnt_objects_idiademelementlist/

Re: Script

say12 — Wed, 19 Apr 2017 11:46:00 GMT

hello christian,

Thank you so much for your answer, i understand that this syntax allows to call all the elements named 'force' and calculate the mean , i wrote this syntax for the three element that i treat( attached). However, it does not display curves on the report , any ideas ?

Regards

Re: Script

Christian-P — Wed, 19 Apr 2017 11:54:52 GMT

Your script creates a new group for every result channel.

If you try to create a group that already exists, DIAdem will create a new group with an index at the end.

Only create and activate the group once at the beginning.

I don't know if this solves your report problem as well.

You have to provide more information to describe your problem.

Re: Script

say12 — Wed, 19 Apr 2017 13:11:22 GMT

hello christian

Thank you for your help , well, i'm doing currently some test, which give me data(energy, force...) that i pos treats by diadem, i must for each number of test calculate the mean, i wrote a script for three and five test ( as you can see in the pictures attachd) , and now i have to write a script that allow me to calculate this mean whatever the number of test i do. i'm really desperate , any help please ? 😞

Re: Script

Brad_Turpin — Wed, 19 Apr 2017 13:25:29 GMT

Hi say,

Christian gave you the important tip to use the Channel List approach-- this enables you to have the same code respond to any number of input channels, so long as their channel names are the same. You just need to loop that code over your 3 channel names, like this:

dim ChanList, ChnNames, ChnName, ResultGroup, ResultChannel
ChnNames = Array("force", "force_xyz", "Energy")
set ResultGroup = Data.Root.ChannelGroups.Add("Results")
Call ResultGroup.Activate()
FOR Each ChnName In ChnNames
  set ResultChannel = ResultGroup.Channels.Add("Mean_" & ChnName, DataTypeChnFloat64)
  set ChanList = Data.GetChannels(ChnName)
  call ChnAverage(ChanList, ResultChannel)
NEXT ' ChnName

Brad Turpin

DIAdem Product Support Engineer

National Instruments

Re: Script

say12 — Wed, 19 Apr 2017 13:28:46 GMT

thank you so much for your help , i'm going to think about all thoses solutions!

Regards

Re: Script

say12 — Wed, 19 Apr 2017 13:48:08 GMT

Oops, i have an error in the line 23 , Error : No channel or only one channel selected==> cannot calculate mean , any ideas ? :'( :'( :'(

Re: Script

Brad_Turpin — Wed, 19 Apr 2017 20:49:53 GMT

Hi say,

I get the same error you report when the ChanName string can not be found at least 2 times in the Data Portal. Here's a version that checks for that and logs the issues in the log file (below the script in the SCRIPT editor).

dim ChanList, ChanNames, ChanName, ResultGroup, ResultChannel
ChanNames = Array("force", "force_xyz", "Energy")
set ResultGroup = Data.Root.ChannelGroups.Add("Results")
Call ResultGroup.Activate()
FOR Each ChanName In ChanNames
  set ChanList = Data.GetChannels(ChanName)
  IF ChanList.Count > 1 THEN
    set ResultChannel = ResultGroup.Channels.Add("Mean_" & ChanName, DataTypeChnFloat64)
    call ChnAverage(ChanList, ResultChannel)
  ELSE
    LogFileWrite "Couldn't find enough channels of type: " & ChanName
  END IF
NEXT ' ChnName

Brad Turpin

DIAdem Product Support Engineer

National Instruments

Re: Script

say12 — Thu, 20 Apr 2017 07:33:07 GMT

Hello Brad,

Thank you for your answer , the script is now running , but i think that it doesn't calculate the mean, i only have one case named "result : as you can see in the figure attached : 'result')

However, i tried another script ( attached in the other figure named : another script') provided by Dia 791, what do you think about it? i think that it works

Re: Script

Brad_Turpin — Mon, 24 Apr 2017 19:38:20 GMT

Hi say,

Your original request was for "the mean of three test[s]". I understood you to want to calculate the mean of N channels that all shared the same channel name but were stored in N different groups. That's what the script I sent you does-- you get one result channel for each original channel name.

If this is not what you're after, please try again to explain what you want.

Brad Turpin

DIAdem Product Support Engineer

National Instruments