Adds markers to the data. Handles duplicate timestamps automatically: If removeDuplicates is TRUE, it keeps only the first marker. Otherwise, it collapses duplicates (e.g., "Start+ConditionA") to preserve data integrity.
Adds markers to the data. Handles duplicate timestamps automatically: If removeDuplicates is TRUE, it keeps only the first marker. Otherwise, it collapses duplicates (e.g., "Start+ConditionA") to preserve data integrity.