DataFrame.toCSV

Deprecated in v1.1.0: Use the dfd.toCSV function directly instead
DataFrame.toCSV(options)
Parameters
Type
Description
Default
options
object, optional
Configuration object:
filePath: Local file path to write the CSV file to. If not specified, the CSV will be returned as a string. Only needed in Nodejs version

fileName: The name of the file to download as. Only needed in browser environment.

download: Boolean indicating whether to automatically download the CSV file in the browser. Only needed in the browser environment.
header: Boolean indicating whether to include a header row in the CSV file.
sep: Character to be used as a separator in the CSV file.
{
sep: ","
}
The toCSV function can be used to write out a DataFrame or Series to CSV file. The output is configurable and will depend on the environment. In the following examples, we show you how to write/download a CSV file from Node and Browser environments.
​
Convert DataFrame to CSV string and return value
Node.js
Browser
const dfd = require("danfojs-node")
​
let data = {
  Abs: [20.2, 30, 47.3],
  Count: [34, 4, 5],
  "country code": ["NG", "FR", "GH"],
};
​
let df = new dfd.DataFrame(data);
​
const csv = df.toCSV();
console.log(csv);
​
//output
Abs,Count,country code
20.2,34,NG
30,4,FR
47.3,5,GH
<!DOCTYPE html>
<html lang="en">
​
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <script src="https://cdn.jsdelivr.net/npm/[email protected]/lib/bundle.min.js"></script>
    <title>Document</title>
</head>
​
<body>
​
    <script>
​
       let data = {
          Abs: [20.2, 30, 47.3],
          Count: [34, 4, 5],
          "country code": ["NG", "FR", "GH"],
        };
        
        let df = new dfd.DataFrame(data);
        
        const csv = df.to_csv({ download: false });
        console.log(csv);
    </script>
</body>
​
</html>
Convert DataFrame to CSV and write to local file path
Writing a CSV file to a local file path is only supported in the Nodejs environment
Node.js
const dfd = require("danfojs-node")
​
let data = {
    Abs: [20.2, 30, 47.3],
    Count: [34, 4, 5],
    "country code": ["NG", "FR", "GH"],
};
​
let df = new dfd.DataFrame(data);
 df.toCSV({ filePath: "testOut.csv"});
Convert DataFrame to CSV and download file in browser
You can automatically convert and download a CSV file in a browser environment, by specifying a fileName and setting download to true.
let data = {
    Abs: [20.2, 30, 47.3],
    Count: [34, 4, 5],
    "country code": ["NG", "FR", "GH"],
};
​
let df = new dfd.DataFrame(data);
​
df.toCSV({ fileName: "testOut.csv", download: true});

DataFrame.print

DataFrame.toJSON

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Convert DataFrame to CSV string and return value

Convert DataFrame to CSV and write to local file path

Convert DataFrame to CSV and download file in browser