Mathnet.Numerics C#（开发人员如何使用）

Install-Package MathNet.Numerics

Install-Package MathNet.Numerics -Version [version_number]

Install-Package MathNet.Numerics -Pre

using MathNet.Numerics.LinearAlgebra;
using System;

class Program
{
    static void Main(string[] args)
    {
        // Create a sample 2x2 matrix
        var matrix = Matrix<double>.Build.DenseOfArray(new double[,] 
        {
            { 1, 2 },
            { 3, 4 }
        });

        // Compute the eigenvalue decomposition of the matrix
        var evd = matrix.Evd();

        // Retrieve eigenvalues and eigenvectors
        var eigenvalues = evd.EigenValues;
        var eigenvectors = evd.EigenVectors;

        // Output results
        Console.WriteLine("Eigenvalues:");
        Console.WriteLine(eigenvalues);

        Console.WriteLine("\nEigenvectors:");
        Console.WriteLine(eigenvectors);
    }
}

Imports Microsoft.VisualBasic
Imports MathNet.Numerics.LinearAlgebra
Imports System

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Create a sample 2x2 matrix
		Dim matrix = Matrix(Of Double).Build.DenseOfArray(New Double(, ) {
			{ 1, 2 },
			{ 3, 4 }
		})

		' Compute the eigenvalue decomposition of the matrix
		Dim evd = matrix.Evd()

		' Retrieve eigenvalues and eigenvectors
		Dim eigenvalues = evd.EigenValues
		Dim eigenvectors = evd.EigenVectors

		' Output results
		Console.WriteLine("Eigenvalues:")
		Console.WriteLine(eigenvalues)

		Console.WriteLine(vbLf & "Eigenvectors:")
		Console.WriteLine(eigenvectors)
	End Sub
End Class

using IronPdf;

class Program
{
    static void Main(string[] args)
    {
        // Create a renderer for generating PDFs using Chrome
        var renderer = new ChromePdfRenderer();

        // 1. Convert HTML String to PDF
        var htmlContent = "<h1>Hello, IronPDF!</h1><p>This is a PDF from an HTML string.</p>";
        var pdfFromHtmlString = renderer.RenderHtmlAsPdf(htmlContent);
        pdfFromHtmlString.SaveAs("HTMLStringToPDF.pdf");

        // 2. Convert HTML File to PDF
        var htmlFilePath = "path_to_your_html_file.html"; // Specify the path to your HTML file
        var pdfFromHtmlFile = renderer.RenderHtmlFileAsPdf(htmlFilePath);
        pdfFromHtmlFile.SaveAs("HTMLFileToPDF.pdf");

        // 3. Convert URL to PDF
        var url = "http://ironpdf.com"; // Specify the URL
        var pdfFromUrl = renderer.RenderUrlAsPdf(url);
        pdfFromUrl.SaveAs("URLToPDF.pdf");
    }
}

Imports IronPdf

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Create a renderer for generating PDFs using Chrome
		Dim renderer = New ChromePdfRenderer()

		' 1. Convert HTML String to PDF
		Dim htmlContent = "<h1>Hello, IronPDF!</h1><p>This is a PDF from an HTML string.</p>"
		Dim pdfFromHtmlString = renderer.RenderHtmlAsPdf(htmlContent)
		pdfFromHtmlString.SaveAs("HTMLStringToPDF.pdf")

		' 2. Convert HTML File to PDF
		Dim htmlFilePath = "path_to_your_html_file.html" ' Specify the path to your HTML file
		Dim pdfFromHtmlFile = renderer.RenderHtmlFileAsPdf(htmlFilePath)
		pdfFromHtmlFile.SaveAs("HTMLFileToPDF.pdf")

		' 3. Convert URL to PDF
		Dim url = "http://ironpdf.com" ' Specify the URL
		Dim pdfFromUrl = renderer.RenderUrlAsPdf(url)
		pdfFromUrl.SaveAs("URLToPDF.pdf")
	End Sub
End Class

using IronPdf;
using MathNet.Numerics.LinearAlgebra;
using System;

class Program
{
    static void Main(string[] args)
    {
        // Perform mathematical computations
        var matrix = Matrix<double>.Build.DenseOfArray(new double[,] {
            { 1, 2 },
            { 3, 4 }
        });
        var evd = matrix.Evd();
        var eigenvalues = evd.EigenValues;
        var eigenvectors = evd.EigenVectors;

        // Render mathematical content as HTML
        var htmlContent = $@"
            <h2>Eigenvalues:</h2>
            <p>{eigenvalues}</p>
            <h2>Eigenvectors:</h2>
            <p>{eigenvectors}</p>";

        // Generate PDF document
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderHtmlAsPdf(htmlContent);

        // Save or stream the PDF document as needed
        pdf.SaveAs("MathematicalResults.pdf");
    }
}

Imports IronPdf
Imports MathNet.Numerics.LinearAlgebra
Imports System

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		' Perform mathematical computations
		Dim matrix = Matrix(Of Double).Build.DenseOfArray(New Double(, ) {
			{ 1, 2 },
			{ 3, 4 }
		})
		Dim evd = matrix.Evd()
		Dim eigenvalues = evd.EigenValues
		Dim eigenvectors = evd.EigenVectors

		' Render mathematical content as HTML
		Dim htmlContent = $"
            <h2>Eigenvalues:</h2>
            <p>{eigenvalues}</p>
            <h2>Eigenvectors:</h2>
            <p>{eigenvectors}</p>"

		' Generate PDF document
		Dim renderer = New ChromePdfRenderer()
		Dim pdf = renderer.RenderHtmlAsPdf(htmlContent)

		' Save or stream the PDF document as needed
		pdf.SaveAs("MathematicalResults.pdf")
	End Sub
End Class