matlab画array,c#实现matlab的数组plot功能
新建一个Form1，写入下面代码，并在Form1添加一个print事件，Form1_Paint。Form1_Paint中有一个随机数二维数组 twoDim，把他改成你想要输出的数组。即可在Form1像matlab plot一样画出二维数组。
原理：
通过调用
e.Graphics.DrawLine作图
并通过Color MapRainbowColor方法定义不同数值对应的颜色
对数组遍历后画出数组的彩色图
但是注意，在c#中这样做需要执行遍历语句多次，作图的效率很低！！
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace COLORMAP
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
// Draw rainbow colors on the form.
private void Form1_Paint(object sender, PaintEventArgs e)
{
Random r = new Random();
float[,] twoDim = new float[100, 100];
for (int i = twoDim.GetLowerBound(0); i <= twoDim.GetUpperBound(0); i++)
{
for (int j = twoDim.GetLowerBound(1); j <= twoDim.GetUpperBound(1); j++)
{
twoDim[i, j] = r.Next(1, 100);
}
}
int Panel_Width = this.panel1.Width;
int Panel_height = this.panel1.Height;
double Pixel_Width = Panel_Width / (twoDim.GetUpperBound(0) - twoDim.GetLowerBound(0) + 1);
double Pixel_height = Panel_height / (twoDim.GetUpperBound(1) - twoDim.GetLowerBound(1) + 1);
int Pixel_Wid = Convert.ToInt32(Math.Floor(Pixel_Width));
int Pixel_heig = Convert.ToInt32(Math.Floor(Pixel_height));
for (int i = twoDim.GetLowerBound(0); i <= twoDim.GetUpperBound(0); i++)
{
for (int j = twoDim.GetLowerBound(1); j <= twoDim.GetUpperBound(1); j++)
{
using (Pen the_pen = new Pen(MapRainbowColor(twoDim[i, j], 0, 100)))
{
for (int x = i*Pixel_Wid; x <= (i + 1) * Pixel_Wid; x++)
{
e.Graphics.DrawLine(the_pen, x, j * Pixel_heig, x, (j + 1) * Pixel_heig);
}
}
}
}
}
// Map a value to a rainbow color.
private Color MapRainbowColor(
float value, float red_value, float blue_value)
{
// Convert into a value between 0 and 1023.
int int_value = (int)(1023 * (value - red_value) /
(blue_value - red_value));
// Map different color bands.
if (int_value < 256)
{
// Red to yellow. (255, 0, 0) to (255, 255, 0).
return Color.FromArgb(255, int_value, 0);
}
else if (int_value < 512)
{
// Yellow to green. (255, 255, 0) to (0, 255, 0).
int_value -= 256;
return Color.FromArgb(255 - int_value, 255, 0);
}
else if (int_value < 768)
{
// Green to aqua. (0, 255, 0) to (0, 255, 255).
int_value -= 512;
return Color.FromArgb(0, 255, int_value);
}
else
{
// Aqua to blue. (0, 255, 255) to (0, 0, 255).
int_value -= 768;
return Color.FromArgb(0, 255 - int_value, 255);
}
}
}
}
标签：plot,twoDim,c#,System,Paint,Form1,matlab,数组,using
来源： https://blog.csdn.net/weixin_44216944/article/details/112852962