Tips and tricks

Updated at November 20th, 2020

Survey changes in multi-wave studies

Adding a new question or dropping an old one in new waves is fine. However, you should not re-use previously used question numbers and column names for different questions. See update project data for more info. 

Set your project to automatically turn [NA] values off

Our default is to show the [NA] values globally. You can show/not show [NA]s on a per-element basis. The attribute in JSON is "showMissing" : true or false. However, you can add a small snippet of code in pre-calculate to set "showMissing" to false globally on opening of the project. 

if (typeof protobi.viewModel !== 'undefined'){ 

protobi.viewModel.set({'showMissing': false})


return rows;

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