# How do I create a specific acoustic results and a log. sum of these acoustic results

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Member, Employee Posts: 164
edited June 2023

So if we have 10 result sets, and want to automatically create 10 SPL dbA plots (identifier A1-A10) and then finally add a user defined result with their sum as shown below:

(10*log(10^(A1/10)+10^(A2/10)+10^(A3/10)+10^(A4/10)+10^(A5/10)+10^(A6/10)+10^(A7/10)+10^(A8/10)+10^(A9/10)+10^(A10/10)))

how is that done?

• Member, Employee Posts: 164
edited May 2023 Answer ✓
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Below is a ACT python script that one can run inside mechanical (Scripting facility). It generates automatically all the results we want. So if we have 10 result sets it will create 10 SPL dbA plots and add a user defined result with their sum as shown below:

(10*log(10^(A1/10)+10^(A2/10)+10^(A3/10)+10^(A4/10)+10^(A5/10)+10^(A6/10)+10^(A7/10)+10^(A8/10)+10^(A9/10)+10^(A10/10)))

(A1-A10 are the identifiers)

The script is:

```analysis = ExtAPI.DataModel.Project.Model.Analyses[0]
setmax=len(freqs)/2
expr=''
for i in range(1, setmax+1):
idtext='A'+str(i)
res.Identifier=idtext
res.By=SetDriverStyle.ResultSet
res.SetNumber=i
if i>1:
expr=expr+ '+10^('+idtext+'/'+ str(setmax) +')'
else:
expr='10^('+idtext+'/' + str(setmax) + ')'
ExtAPI.DataModel.Tree.Refresh()
fullexpr='10*log10('+expr+')'