.NET class that provides extension methods to do interop into Matlab (name the file MyMatlab.cs).
using System;
using System.Collections.Generic;
using MathWorks.MATLAB.NET.Arrays;
namespace MyHelper
{
/// <summary>
/// Collection of chained classes to make Matlab access easier.
/// </summary>
public static class MyMatlab
{
/// <summary>
/// Returns a double in a format that can be passed into Matlab.
/// </summary>
/// <param name="toMatlab">Double to convert into a form we can pass into Matlab.</param>
/// <returns>A double in Matlab format.</returns>
public static MWNumericArray MyToMatlab(this double toMatlab)
{
return new MWNumericArray(toMatlab);
}
/// <summary>
/// Converts an array that contains a single Matlab return parameter back into a .NET double.
/// </summary>
/// <param name="toDouble">MWArray variable, returned from Matlab code.</param>
/// <returns>.NET double.</returns>
public static double MyToDouble(this MWArray toDouble)
{
var matNumericArray = (MWNumericArray)toDouble;
return matNumericArray.ToScalarDouble();
}
/// <summary>
/// Converts an array that contains multiple Matlab return parameters back into a list of .NET doubles.
/// </summary>
/// <param name="toList">MWArray variable, returned from Matlab code.</param>
/// <returns>List of .NET doubles.</returns>
public static List<double> MyToDoubleList(this MWArray toList)
{
var matNumericArray = toList;
var netArray = (MWNumericArray)matNumericArray.ToArray();
var result = new List<double>();
// Console.Write("{0}", netArray[1]);
for (int i = 1; i <= netArray.NumberOfElements; i++) // Matlab arrays are 1-based, thus the odd indexing.
{
result.Add(netArray[i].ToScalarDouble());
}
return result;
}
/// <summary>
/// Converts an array that contains multiple Matlab return parameters back into a list of .NET ints.
/// </summary>
/// <param name="toList">MWArray variable, returned from Matlab code.</param>
/// <returns>List of .NET ints.</returns>
public static List<int> MyToMWNumericArray(this MWArray toList)
{
var matNumericArray = toList;
var netArray = (MWNumericArray)matNumericArray.ToArray();
var result = new List<int>();
// Console.Write("{0}", netArray[1]);
for (int i = 1; i <= netArray.NumberOfElements; i++) // Matlab arrays are 1-based, thus the odd indexing.
{
result.Add(netArray[i].ToScalarInteger());
}
return result;
}
/// <summary>
/// Converts an int[] array into a Matlab parameters.
/// </summary>
/// <param name="intArray">MWArray variable, returned from Matlab code.</param>
/// <returns>List of .NET ints.</returns>
public static MWNumericArray MyToMWNumericArray(this int[] intArray)
{
return new MWNumericArray(1, intArray.Length, intArray); // rows, columns int[] realData
}
/// <summary>
/// Converts an double[] array into parameter for a Matlab call.
/// </summary>
/// <param name="arrayOfDoubles">Array of doubles.</param>
/// <returns>MWNumericArray suitable for passing into a Matlab call.</returns>
public static MWNumericArray MyToMWNumericArray(this double[] arrayOfDoubles)
{
return new MWNumericArray(1, arrayOfDoubles.Length, arrayOfDoubles); // rows, columns int[] realData
}
/// <summary>
/// Converts an List of doubles into a parameter for a Matlab call.
/// </summary>
/// <param name="listOfDoubles">List of doubles.</param>
/// <returns>MWNumericArray suitable for passing into a Matlab call.</returns>
public static MWNumericArray MyToMWNumericArray(this List<double> listOfDoubles)
{
return new MWNumericArray(1, listOfDoubles.Count, listOfDoubles.ToArray()); // rows, columns int[] realData
}
/// <summary>
/// Converts a list of some type into an array of the same type.
/// </summary>
/// <param name="toArray">List of some type.</param>
/// <returns>Array of some type.</returns>
public static T[] MyToArray<T>(this List<T> toArray)
{
var copy = new T[toArray.Count];
for (int i = 0; i < toArray.Count; i++) {
copy[i] = toArray[i];
}
return copy;
}
static private readonly MatlabGraph.Graph MatlabInstance = new MatlabGraph.Graph();
/// <summary>
/// Plot a 2D graph.
/// </summary>
/// <param name="x">Array of doubles, x axis.</param>
/// <param name="y">Array of doubles, y axis.</param>
/// <param name="title">Title of plot.</param>
/// <param name="xaxis">X axis label.</param>
/// <param name="yaxis">Y axis label.</param>
static public void MyGraph2D(List<double> x, List<double> y, string title = "title", string xaxis = "xaxis", string yaxis = "yaxis")
{
MatlabInstance.Graph2D(x.MyToMWNumericArray(), y.MyToMWNumericArray(), title, xaxis, yaxis);
}
/// <summary>
/// Plot a 2D graph.
/// </summary>
/// <param name="x">Array of doubles, x axis.</param>
/// <param name="y">Array of doubles, y axis.</param>
/// <param name="title">Title of plot.</param>
/// <param name="xaxis">X axis label.</param>
/// <param name="yaxis">Y axis label.</param>
static public void MyGraph2D(double[] x, double[] y, string title = "title", string xaxis = "xaxis", string yaxis = "yaxis")
{
MatlabInstance.Graph2D(x.MyToMWNumericArray(), y.MyToMWNumericArray(), title, xaxis, yaxis);
}
/// <summary>
/// Unit test for this class. Displays a graph using Matlab.
/// </summary>
static public void Unit()
{
{
var x = new double[100];
var y = new double[100];
for (int i = 0; i < 100; i++) {
x[i] = i;
y[i] = Math.Sin(i);
}
MyGraph2D(x, y);
}
{
var x = new double[100];
var y = new double[100];
for (int i = 0; i < 100; i++) {
x[i] = i;
y[i] = 2 ^ i;
}
MyGraph2D(x, y);
}
}
}
}
