p5.TableRow getString() Method

The getString() method of p5.TableRow in p5.js is used to retrieve a String value from the given column of the table row. The column can be specified by its column ID or column name.

Syntax:

getString( column )

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

column: It is a String or Number that denotes the column name or ID of the column.

Return Value: This method returns a String which is the value retrieved from the given column of the table.

The examples below illustrate the getString() method in p5.js:

Example 1:

JavaScript

function setup() {
  createCanvas(600, 300);
  textSize(18);

  text("Click on the button to get all " + 
       "the values of the table", 20, 20);

  setBtn =
    createButton("Get all table values");
  setBtn.position(30, 40);
  setBtn.mouseClicked(showTable);

  // Create the table
  table = new p5.Table();

  // Add two columns
  table.addColumn("name");
  table.addColumn("id");

  // Add some rows to the table
  let newRow = table.addRow();
  newRow.setString("name", "Mary");
  newRow.setString("id", "id-1");

  newRow = table.addRow();
  newRow.setString("name", "Nezuko");
  newRow.setString("id", "id-12");

  newRow = table.addRow();
  newRow.setString("name", "Ishigaki");
  newRow.setString("id", "id-121");

  newRow = table.addRow();
  newRow.setString("name", "Sam");
  newRow.setString("id", "id-23");

  newRow = table.addRow();
  newRow.setString("name", "Max");
  newRow.setString("id", "id-45");

  newRow = table.addRow();
  newRow.setString("name", "Mikasa");
  newRow.setString("id", "id-132");
}

function showTable() {
  clear();
  text("The values each tableRow is " +
       "retrieved using the getString() method",
     20, 20);

  // Show all the columns present
  for (let c = 0; c < table.getColumnCount(); c++) {
    text(table.columns[c], 20 + 160 * c, 80);
  }

  // Show all the rows currently
  // present in the table
  for (let r = 0; r < table.getRowCount(); r++) {
    
    // Get the table row from the table
    let table_row = table.rows[r];

    // Getting the name column from
    // the table row
    text(table_row.getString("name"),
      20, 120 + 20 * r);

    // Getting the id column from
    // the table row
    text(table_row.getString("id"),
      180, 120 + 20 * r);
  }
}

Output:

Example 2:

JavaScript

function setup() {
  createCanvas(500, 300);
  textSize(18);

  text("Click on the button to get " +
       "that value in the table", 20, 20);
  
  text("Enter row and column", 20, 60);

  rowInp = createInput();
  rowInp.position(30, 80);
  rowInp.size(30, 20);

  colInp = createInput();
  colInp.position(70, 80);
  colInp.size(30, 20);

  setBtn =
    createButton("Get value at row and column");
  setBtn.position(30, 110);
  setBtn.mouseClicked(getValueAt);

  // Create the table
  table = new p5.Table();

  setTableData()
}

function setTableData() {

  // Add 5 columns and rows to the table
  for (let i = 0; i < 5; i++) {
    table.addColumn("Column " + i);
    table.addRow();
  }

  for (let r = 0; r < 5; r++) {
    for (let c = 0; c < 5; c++) {

      // Set the value at the given
      // column and row of the table
      table.set(r, c, r + " : " + c);
    }
  }
}

function getValueAt() {
  clear();
  let rowToGet = int(rowInp.value());
  let colToGet = int(colInp.value());

  if (rowToGet < table.getRowCount() &&
      colToGet < table.getColumnCount()) {
    text("The value at row " + rowToGet +
         " and column " + colToGet +
         " is:", 20, 160);

    // Get the table row from the table
    let table_row = table.rows[rowToGet];
    
    // Print the column from the table row
    text(table_row.getString(colToGet),
         20, 180);
  }
  else
    text("Please enter correct row " + 
         "and column values", 20, 160);

  text("Click on the button to get " + 
       "that value in the table", 20, 20);
  text("Enter row and column", 20, 60);
}

Output:

Online editor: https://editor.p5js.org/

Environment Setup: https://www.geeksforgeeks.org/javascript/p5-js-soundfile-object-installation-and-methods/

Reference: https://p5js.org/reference/#/p5.TableRow/getString

p5.TableRow getString() Method

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