How do I remove the dots in LineChartView iOS charts
<p>I'm learning <a href="https://github.com/danielgindi/Charts" rel="noreferrer">ios-charts</a>. I was using the tutorial found <a href="http://www.appcoda.com/ios-charts-api-tutorial/" rel="noreferrer">here</a>. The first picture shows the result I am getting. How do you remove the blue circle dots so that it only shows a smooth line like what is shown in the second picture? 
<a href="https://i.stack.imgur.com/735vQ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/735vQ.png" alt="This is the result I am getting"></a></p>

<p><a href="https://i.stack.imgur.com/UqWHq.png" rel="noreferrer"><img src="https://i.stack.imgur.com/UqWHq.png" alt="This is what I am trying to get"></a></p>

<p>Here is snippet of the code</p>

<pre><code>import UIKit
import Charts

class ChartsViewController: UIViewController {

@IBOutlet weak var lineChartView: LineChartView!

override func viewDidLoad() {
    super.viewDidLoad()

    // Do any additional setup after loading the view.

    let months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"]
    let unitsSold = [20.0, 4.0, 6.0, 3.0, 12.0, 16.0]

    setChart(months, values: unitsSold)

}

func setChart(dataPoints: [String], values: [Double]) {

    var dataEntries: [ChartDataEntry] = []

    for i in 0..&lt;dataPoints.count {
        let dataEntry = ChartDataEntry(value: values[i], xIndex: i)
        dataEntries.append(dataEntry)
    }

    let lineChartDataSet = LineChartDataSet(yVals: dataEntries, label: "Units Sold")
    let lineChartData = LineChartData(xVals: dataPoints, dataSet: lineChartDataSet)
    lineChartView.data = lineChartData

}

}
</code></pre>