CSV file handling in MATLAB - Cheat Sheet & Quick Revision

Recall & Review

beginner

What MATLAB function is commonly used to read data from a CSV file?

The readtable function is commonly used to read data from a CSV file into a table in MATLAB.

beginner

How do you write a MATLAB table to a CSV file?

You use the writetable function to save a MATLAB table to a CSV file.

intermediate

What is the difference between readtable and csvread in MATLAB?

readtable reads CSV files into tables and handles mixed data types and headers, while csvread reads numeric data only and does not handle headers.

intermediate

How can you specify a delimiter other than a comma when reading a CSV file in MATLAB?

You can specify the delimiter using the 'Delimiter' name-value pair argument in readtable, for example: readtable('file.txt', 'Delimiter', ';').

beginner

What MATLAB function would you use to read a CSV file if you want the data as a numeric matrix?

You can use csvread or readmatrix to read CSV files as numeric matrices. readmatrix is recommended for newer MATLAB versions.

Which MATLAB function reads CSV files into a table including headers?

A readtable

B csvread

C load

D fopen

readtable reads CSV files into tables and includes headers automatically.

Which function is best to write a table to a CSV file in MATLAB?

A csvwrite

B fprintf

C writetable

D readtable

writetable writes tables to CSV files, preserving headers and data types.

If your CSV file has semicolons as separators, how do you read it in MATLAB?

A load('file.csv')

B readtable('file.csv')

C csvread('file.csv')

D readtable('file.csv', 'Delimiter', ';')

Use the 'Delimiter' option in readtable to specify semicolon separators.

Which MATLAB function reads only numeric data from a CSV file?

A csvread

B readtable

C writetable

D textscan

csvread reads numeric data only and ignores headers.

What is the recommended function to read numeric data from CSV files in recent MATLAB versions?

A csvread

B readmatrix

C readtable

D load

readmatrix is recommended for reading numeric data from CSV files in newer MATLAB versions.

Explain how to read a CSV file with headers and mixed data types in MATLAB.

Think about the function that returns a table and handles text and numbers.

Describe the steps to save a MATLAB table to a CSV file.

Focus on the function that writes tables to files.