vb繪制趨勢圖

方法一：Excel中就可以實現(xiàn)；

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方法二：通過VB.net將數(shù)據(jù)寫入到Excel中生成趨勢圖；

方法三:直接通過VB.net寫出這種趨勢圖。

具體方法可以參考VB.net操作Excel方法:

可用代碼：

For i = 0 To iRow - 1

pointXY(i) = "'這里你可以直接放上你的數(shù)據(jù)點值在X線上

"

pointYY(i) = "'這里你可以直接放上你的數(shù)據(jù)點值在Y線上

Next

Private Sub DrawRectangle()

Try

Dim oV2Bar As New Graphing.V3.Bar.BarChart()

Dim renderer As New Graphing.V3.Render

PictureBox1.Image = renderer.DrawChart(oV2Bar, Xline,Yline iRow, pointXY, pointYY)

End If

Catch ex As Exception

MsgBox(ex.Message)

Public Class BarChart : Inherits Base.BaseGraph

'This will hold the Bar pieces.

Public BarSliceCollection As New Bar.BarPieceCollection()

Private _Alignment As Base.b_BarTypes = Base.b_BarTypes.HorizontalLeft

Public Property Alignment() As Base.b_BarTypes

Get

Return _Alignment

End Get

Set(ByVal Value As Base.b_BarTypes)

_Alignment = Value

End Set

End Property

'Private _ChartType As Base.b_ChartType = Base.b_ChartType.Bar

Public Shadows ReadOnly Property ChartType() As Base.b_ChartType

Get

Return MyBase.ChartType

End Get

End Property

Sub New()

MyBase.new()

MyBase.ChartType = Base.b_ChartType.Bar

End Sub

Sub New(ByVal BarPieceCollection As BarPieceCollection)

MyBase.new()

MyBase.ChartType = Base.b_ChartType.Bar

BarSliceCollection = BarPieceCollection

End Sub

End Class

End Try

End Sub

vb.net繪制曲線圖

。net ?其實還是很好繪制圖形的

你可以看下?Graphics ?類

Dim d As New Bitmap(Me.Width, Me.Height) ?‘一個圖片吧

? Dim g As Graphics = Graphics.FromImage(d)’繪制 ?準備在這個圖片是進行

然后 ?就是你繪制的東西了

線 就是 ??g.DrawLine()

圓 弧度 ?就用 ?g.DrawArc(Pens.Black, New Rectangle(0, 0, 400, 200), 0, 360)

復(fù)雜的就是 ? ? ?g.DrawBezier()

等 ?如果你用的是 VS的 ?編譯 ?上面都有詳細的參數(shù)說明

Dim?d?As?New?Bitmap(Me.Width,?Me.Height)

Dim?g?As?Graphics?=?Graphics.FromImage(d)

g.DrawArc(Pens.Black,?New?Rectangle(0,?0,?200,?200),?0,?360)

g.DrawLine(Pens.Red,?New?Point(0,?0),?New?Point(200,?200))

g.DrawLines(Pens.Green,?New?Point()?{New?Point(0,?0),?New?Point(50,?40),?New?Point(50,?80),?New?Point(90,?70),?New?Point(100,?400)})

g.DrawBezier(Pens.Yellow,?New?Point(0,?100),?New?Point(0,?0),?New?Point(200,?0），?New?Point(200,?200))

g.Dispose()

Me.BackgroundImage?=?d

請問怎么樣用VB.net(C#)在Excel上繪制曲線圖？

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VB繪制參數(shù)曲線走勢圖

vb.net:先計算好坐標，再用GDI+里封裝的drawline方法畫出短線（模擬數(shù)據(jù)點），傳來一個數(shù)據(jù)就畫一條短線，最后看起來就像曲線了。

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