Excel file reading and writing in MATLAB - Cheat Sheet & Quick Revision

Recall & Review

beginner

What MATLAB function is used to read data from an Excel file?

The readtable function is commonly used to read data from an Excel file into a table format.

beginner

How do you write a MATLAB table to an Excel file?

Use the writetable function to write a table to an Excel file.

intermediate

What argument do you use with readtable to specify a sheet name?

Use the 'Sheet' name-value pair argument, for example: readtable('file.xlsx', 'Sheet', 'Sheet2').

intermediate

How can you read only a specific range of cells from an Excel file in MATLAB?

Use the 'Range' argument with readtable, for example: readtable('file.xlsx', 'Range', 'A1:C10').

intermediate

What happens if you use writetable on an existing Excel file?

The default sheet ('Sheet1') is overwritten (other sheets preserved) unless you specify a different sheet or file name.

Which MATLAB function reads data from an Excel file into a table?

A readtable

B xlswrite

C csvread

D writetable

readtable reads Excel data into a table. xlswrite writes data, csvread reads CSV files, and writetable writes tables.

How do you specify which sheet to read from in an Excel file using MATLAB?

A Using the 'Sheet' argument in readtable

B Using the 'Range' argument in writetable

C Using the 'Sheet' argument in writetable

D Using the 'Range' argument in readtable

The 'Sheet' argument in readtable lets you choose the sheet to read.

What does the 'Range' argument do in readtable?

A Specifies the delimiter

B Specifies the sheet name

C Specifies the output file name

D Specifies the cells to read from the Excel sheet

The 'Range' argument limits reading to a specific cell range like 'A1:C10'.

Which function writes a MATLAB table to an Excel file?

A xlsread

B readtable

C writetable

D csvwrite

writetable writes tables to Excel files. readtable reads tables.

What happens if you write to an existing Excel file with writetable without specifying a sheet?

A The data is appended

B The default sheet ('Sheet1') is overwritten

C An error occurs

D The file is renamed automatically

By default, writetable overwrites the default sheet ('Sheet1') in the existing Excel file (other sheets are preserved).

Explain how to read data from a specific sheet and range in an Excel file using MATLAB.

Think about how to tell MATLAB which part of the Excel file to read.

Describe the process to write a MATLAB table to an Excel file and what happens if the file already exists.

Consider what happens by default and how to avoid overwriting.