MATLAB - File I/O
When reading a CSV file with duplicate column names using
readtable, what happens to the duplicate columns?When reading a CSV file with duplicate column names using readtable, what happens to the duplicate columns?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand readtable behavior with duplicate names
When duplicate column names exist, MATLAB automatically appends suffixes like '_1', '_2' to make them unique.Step 2: Confirm no error or merging occurs
readtable does not throw error or merge columns; all columns are read with unique names.Final Answer:
MATLAB appends suffixes to duplicate names to make them unique -> Option AQuick Check:
Duplicate column names get unique suffixes in readtable [OK]
Quick Trick: MATLAB auto-renames duplicate columns with suffixes [OK]
Common Mistakes:
- Expecting error on duplicates
- Thinking columns merge
- Assuming duplicates ignored
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