Matlab API, ModifySettings error in POP

Question

Hi all,
I'm working with Matlab and trying to use the ModifySettings on a cfg file to update a Physical Optics Propagation analysis but continue to encounter an error. This is my setup so far:
 
TheSystem = TheApplication.PrimarySystem;
testFile = System.String.Concat('\...\','myFile.zmx'); %the '...' is my directory
TheSystem.LoadFile(testFile,false);
pop = TheSystem.Analyses.New_Analysis(ZOSAPI.Analysis.AnalysisIDM.PhysicalOpticsPropagation);
pop.Terminate();
pop.WaitForCompletion();
pop_setting = pop.GetSettings();
cfg = System.String.Concat('\...\','myCFG.cfg');
pop_setting.LoadFrom(cfg);
pop_setting.ModifySettings(cfg, 'POP_PARAM1', 0.010) %Beam Waist in X. 
 
This last line is where I get my error: 'No method 'ModifySettings' with matching signature found for class 'ZemaxUI.ZOSAPI.Analysis.AS_Default'.' The idea is to run a number of POP analyses for different beam waists, so being able to update the beam waist is necessary. Any help would be appreciated.
 
Thanks

Csilla Timar-Fulep · Accepted Answer

Hello Cesar,Thanks for your question here!As discussed in this knowledge base articleBasic method of performing system analysis in ZOS-API,there are in general 2 ways that analysis settings can be adjusted. Firstly, some commonly-used analyses have analysis-specific settings interfaces available. An example isIAS_FftMtf. In these cases, all the analysis settings interfaces are located in the ZOSAPI.Analysis.Settings Namespace. You can check if your analysis has a settings interface using the HasAnalysisSpecificSettings property:my_analysis.HasAnalysisSpecificSettingsUnfortunately, for POPthe command returns “0”, which means that the analysis does not have a fully-implemented settings interface available. Therefore the analysis settings cannot be edited via the API but have to be changed through the second option, which is via the IAS_ModifySettings command, which modifies the settings file for the analysis (.cfg file) directly:The ModifySettings command works very similarly to the ZPL MODIFYSETTINGS keyword, you may find more info in the Help file under:The Programming Tab > About the ZPL > KEYWORDS (about the zpl) > MODIFYSETTINGS (keywords)The ModifySettings function and keywordneedstring inputs, even the new value has to be a string. The problem with your code is that the entered new value is not a string variable. If you change the last line of your code as one of the followings, it will work fine:pop_setting.ModifySettings(cfg, 'POP_PARAM1', num2str(0.010)) %Beam Waist in X.orpop_setting.ModifySettings(cfg, 'POP_PARAM1', '0.010') %Beam Waist in X.If you have further questions, please let us know and we will be happy to help!Best,Csilla

Cesar Adrian.Cort · Answer

Hello Csilla,Thank you for your help, this worked perfectly! I must have missed the that the newValue was a string input in the documentation. I was also looking at the 'ZOS-API using Python' knowledgebase ('# 2.5 Modify Settings Method' section) and the post did not rely on string input for the newValue. Thanks again!

Matlab API, ModifySettings error in POP

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