Saturday, August 30, 2025
HomeLanguagesJavascriptp5.js | p5.Table getColumn() Method

p5.js | p5.Table getColumn() Method

The getColumn() method of p5.Table in p5.js is used to retrieve all values in the given column and return them in the form of an array. The column to be returned may be given in the form of its title or ID.
Syntax:
 

getColumn( column )

Parameters: This function accepts a single parameter as mentioned above and described below: 
 

  • column: It is a String or Number which denotes the title or the number of the column to return.

Return Value: It returns an array of column values as specified by the column parameter.
The example below illustrates the getColumn() function in p5.js:
Example:
 

javascript




function setup() {
  createCanvas(500, 200);
  textSize(16);
  
  getColBtn = createButton("Get Column Values");
  getColBtn.position(30, 50);
  getColBtn.mouseClicked(getCols);
  
  text("Click on the button to get column values", 20, 20);
  
  // Create the table
  table = new p5.Table();
  
  // Add two columns
  // using addColumn
  table.addColumn("author");
  table.addColumn("language");
  
  // Add two rows
  let newRow = table.addRow();
  newRow.setString("author", "Dennis Ritchie");
  newRow.setString("language", "C");
  
  newRow = table.addRow();
  newRow.setString("author", "Bjarne Stroustrup");
  newRow.setString("language", "C++");
}
  
function getCols() {
  
  // Array of values in the column "author"
  author_col = table.getColumn("author");
  
  text("Column author: ", 20, 100);
  // Loop through the array to display the values
  for (let i = 0; i < author_col.length; i++) {
    text(author_col[i], 170 + i * 120, 100);
  }
  
  // Array of values in the column "language"
  language_col = table.getColumn("language");
  
  text("Column language: ", 20, 120);
  // Loop through the array to display the values
  for (let i = 0; i < language_col.length; i++) {
    text(language_col[i], 170 + i * 120, 120);
  }
}


Output:
 

getCol-btn

Online editor: https://editor.p5js.org/
Environment Setup: https://www.geeksforgeeks.org/p5-js-soundfile-object-installation-and-methods/
Reference: https://p5js.org/reference/#/p5.Table/getColumn
 

Whether you’re preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape, neveropen Courses are your key to success. We provide top-quality content at affordable prices, all geared towards accelerating your growth in a time-bound manner. Join the millions we’ve already empowered, and we’re here to do the same for you. Don’t miss out – check it out now!
RELATED ARTICLES

Most Popular

Dominic
32249 POSTS0 COMMENTS
Milvus
81 POSTS0 COMMENTS
Nango Kala
6617 POSTS0 COMMENTS
Nicole Veronica
11792 POSTS0 COMMENTS
Nokonwaba Nkukhwana
11838 POSTS0 COMMENTS
Shaida Kate Naidoo
6731 POSTS0 COMMENTS
Ted Musemwa
7013 POSTS0 COMMENTS
Thapelo Manthata
6689 POSTS0 COMMENTS
Umr Jansen
6701 POSTS0 COMMENTS