plt pdfs in csharp

main.cs
using System.IO;
using PdfSharp.Drawing;
using PdfSharp.Pdf;
using PdfSharp.Pdf.Advanced;

namespace PdfPlotting
{
    class Program
    {
        static void Main(string[] args)
        {
            // Open the PDF file
            string pdfFilePath = "input.pdf";
            PdfDocument inputDocument = PdfReader.Open(pdfFilePath, PdfDocumentOpenMode.Import);

            // Get the first page of the PDF file
            PdfPage page = inputDocument.Pages[0];

            // Create a chart
            Chart chart = new Chart();
            chart.AddDataFromPdfPage(page);

            // Create a new PDF document and add a page to it
            PdfDocument outputDocument = new PdfDocument();
            PdfPage outputPage = outputDocument.AddPage();

            // Draw the chart on the PDF page
            XGraphics gfx = XGraphics.FromPdfPage(outputPage);
            chart.Draw(gfx);

            // Save the output PDF file
            string outputPdfFilePath = "output.pdf";
            outputDocument.Save(outputPdfFilePath);
        }
    }
}

// The Chart class
class Chart
{
    private List<double> xValues = new List<double>();
    private List<double> yValues = new List<double>();

    public void AddDataFromPdfPage(PdfPage page)
    {
        // TODO: Extract data from the PDF page and populate xValues and yValues lists
    }

    public void Draw(XGraphics gfx)
    {
        // TODO: Draw a chart using xValues and yValues lists
    }
}
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