如果我在C#中有一个二维数组,我如何在Matlab中绘制这个数组的内容,作为二维图?我正在使用扩展方法,即
my2DArray.PlotInMatlab();
答案 0 :(得分:9)
我最终搞定了这个。下面是一个示例图,由调用Matlab .m文件的.NET 4.0 C#控制台应用程序生成:
好消息是我们可以使用Matlab的所有功能绘制图形,只需几行.NET。
如何在.NET中执行此操作:
在Visual Studio 2010中为C#创建一个新的.NET控制台应用程序,并将其更改为.NET 4.0(右键单击该项目,选择“属性”)。
.NET Main():
using System;
using System.Diagnostics;
namespace MyPlotGraphUsingMatlabRuntimes
{
/// <summary>
/// Display a graph in Matlab, from a .NET console app.
/// </summary>
class Program
{
static void Main(string[] args)
{
var x = new double[100];
var y = new double[100];
for (int i = 0; i < 100; i++) {
x[i] = i;
y[i] = 2 ^ i;
}
MyHelper.MyMatlab.MyGraph2D(x,y);
Console.Write("[any key to exit]");
Console.ReadKey();
}
}
}
.NET类,提供扩展方法以在Matlab中进行互操作(将文件命名为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);
}
}
}
}
接下来,我们将.m文件导出到.NET程序集中。我使用了Matlab 2010a(这也适用于2010b)。使用Matlab,32位版本(当Matlab启动时,在启动画面中显示32位或64位)。
以下Matlab代码显示图表。将其另存为Graph2D.m
。
function Graph2D (x,y, titleTop, labelX, labelY)
% Create figure
myNewFigure = figure;
plot(x,y)
title({titleTop});
xlabel({labelX});
ylabel({labelY});
在Matlab中通过在控制台中键入以下内容进行测试(确保将Matlab工具栏中的Current Folder
更改为与Graph2D.m
相同的目录):
x = 0:.2:20;
y = sin(x)./sqrt(x+1);
Graph2D(x,y,'myTitle', 'my x-axis', 'my y-axis')
在Matlab部署工具中,添加一个类Graph
,然后添加文件Graph2D.m
,然后将其打包到MatlabGraph.dll
(将组件名称更改为MatlabGraph
在设置中,这确定了生成的.dll的名称。
在您的.NET项目中,添加对MatlabGraph.dll
的引用(我们刚从Graph2D.m
编译的.NET .dll)。如果使用Matlab的32-bit
版本编译,则为32-bit
。
MWArray.dll
的引用。您可以通过搜索Matlab安装目录找到它。 32-bit
或始终为64-bit
。
32-bit
,您的.NET应用必须针对x32
进行编译,您必须使用32-bit
版本的Matlab(它会在启动时显示32-bit
屏幕)导出.NET .dll,您必须将32-bit
版本的MWArray.dll
导入.NET项目。64-bit
,请将您的.NET应用程序编译为All CPU
,您必须使用64-bit
版本的Matlab(它将在初始屏幕中显示64-bit
)要导出.NET .dll,您必须将64-bit
版本的MWArray.dll
导入到.NET项目中。 File..New..Figure
在Matlab中创建一个新图,使用Insert
进行自定义,然后使用File..Generate M file
生成.m代码。新生成的.m文件中的行很明显,您可以将它们复制到原始Graph2D.m
文件中,然后重新生成MatlabGraph.dll
。例如,为图形添加标题会在自动生成的.m文件中添加一行title({'My new title});
。