关于vb.net实时曲线的信息

vb.net 绘制实时温度曲线

这个要用GDI+画.要看你.net版本.

Dim gr As Graphics '定义画布

Dim p As New Pen(Color.Black) '定义画笔

PictureBox1.Image = bp

gr = Graphics.FromImage(PictureBox1.Image)

gr.FillRectangle(Brushes.White, New Rectangle(0, 0, PictureBox1.Width, PictureBox1.Height))

gr.DrawLine(p, a, b, a, .Height - b) '绘制纵坐标

gr.DrawLine(p, a, .Height - b, .Width - a, .Height - b) '绘制横坐标

VB.NET 实时曲线

vb.net实现实时数据采集曲线,有什么方法,或是书籍呢?

简单说下思路吧,具体的代码可以查资料

首先要会画曲线图,有三种方法：

x轴为时间,y轴为数据

要实现实时数据刷新,只要用 定时器 定时刷新曲线图的数据就可以了（x、y的数据重写）

vb.net连续绘制曲线图不消失

您好,您是想问vb.net连续绘制曲线图不消失怎么办?b.net连续绘制曲线图不消失的解决办法如下：

①.、首先必须创建bitmap,关联到picturebox1.image上.

VB.NETsin曲线

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

Timer1.Enabled = True

Next

End Sub

Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick

Static j As Long

j = j + 1

PictureBox1.Image = x_y(PictureBox1, j)

Private Function x_y(ByVal pic As PictureBox, ByVal x As Long) As Bitmap

Dim b As New Bitmap(pic.Width, pic.Height)

Dim g As Graphics = Graphics.FromImage(b)

Dim c

Dim j

g.Clear(Color.YellowGreen)

Dim p As New Pen(Color.WhiteSmoke)

Dim i As Double

Dim bs As New SolidBrush(Color.Red)

Dim po As New Point

po.X = 0

g.DrawString(Math.Round(i, 1), Me.Font, bs, po.X, po.Y)

Dim p1 As New Pen(Color.Blue)

End If

For i = 0 To Points1.Count - 1

g.DrawCurve(Pens.Red, Points1)

'For i = 0 To Points1.Count - 1

'g.DrawString(Math.Sin(i), Me.Font, Brushes.Red, Points1(i))

'Next

Return b

End Function

请问怎么样用VB.net(C#)在Excel上绘制曲线图?

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