LargeData example

[j2doll]

• The LargeData example demonstrates how to efficiently generate, write, and read large Excel .xlsx files using QXlsx.
• It showcases:
  • Writing a large dataset (hundreds of thousands of rows)
  • Optional cell formatting
  • Splitting data across multiple sheets
  • Time-stamped progress reporting (0.1% increments)
  • Verification of selected sample cells after writing
  • Command-line configurability (rows, columns, sheet size, etc.)