To apply an
op.eq operation, N parameters are on top of the stack: N-1 Geo Time Series™ lists and one labels List. According to those labels, it produces multiple equivalence classes from the GTS inside those N-1 lists (if they match the same labels as the equivalence class). Then op.eq is applyied to the GTS in those classes, building only one result GTS for each class.
op.eq operation will check for equality at each tick all the values of all the GTS belonging to the same class (if they do have a value for this current tick). If one GTS doesn’t have a value for the current tick the result for this tick is false.
The elevation and location are cleared.
The name of the resulting GTS is the one of the last GTS of the equivalence class. The labels kept are the one of the equivalence class.