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

Erik Kostson

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?

Erik Kostson

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]
reader = analysis.GetResultsData()
freqs=reader.ListTimeFreq
setmax=len(freqs)/2
expr=''
for i in range(1, setmax+1):
  res=ExtAPI.DataModel.Project.Model.Analyses[0].Solution.AddAcousticAWeightedSoundPressureLevel()
  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+')'
resur=ExtAPI.DataModel.Project.Model.Analyses[0].Solution.AddUserDefinedResult()
resur.Expression=fullexpr
resur.EvaluateAllResults()
reader.Dispose()