Lecture Notes: WriteCell in MATLAB

Overview

• Continuation of introduction to WriteCell from the previous video.
• Focus on adding information about capacitors to a parts list in an Excel workbook using MATLAB.

Previous Video Recap

• Creation of a new workbook.
• Writing resistor information from cell arrays to the workbook.

Current Lecture

Writing Capacitor Information

• Objective: Add capacitors to a separate sheet in the existing component list.xlss file.
• Method: Demonstrating a different method to write information using MATLAB.

Cell Arrays and Syntax

• Combine C-value, C-volt, and C-quant into a single three-row cell array.
• Use of concatenation operator (square brackets) and curly braces.

Curly Braces vs. Parentheses

• Mnemonic: Curly for contents.
• Curly braces pull contents out of cell arrays, while parentheses retain the variable type.

Demonstration and Common Pitfalls

• Without Outer Curly Braces:
  • Results in a single value when enclosed in command syntax.
  • Issue with semicolons indicating the end of a command rather than continuing to next row.
• With Outer Curly Braces:
  • Contains all cell arrays but in a nested format which is unsupported by WriteCell for writing to spreadsheets.

Correct Approach

• Original form for creating a 3x4 cell array:
  • Inner curly braces with colons extract contents.
  • Enclose in outer curly braces to form a complete cell array.

Writing to Spreadsheet

• Successful write operation without errors.
• New sheet labeled 'capacitors' with correct information.
• Error encountered with nested cell arrays.

Conclusion

• Successfully created and filled a 'capacitors' sheet in the Excel workbook.
• Next video will cover reading information from spreadsheets, modification in MATLAB, and writing back to Excel.

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