Dear all,
I am trying to plot graph for CSV file. My file saved as current.csv andwhen open it look like this
Now i wanted to import graph and plot intially time Vs watt-hourCode:Date TIME Watt-Hour Current
26-09-2014 10:09:55 AM 0.003933333 0.13
26-09-2014 10:10:10 AM 0.007866667 0.1
26-09-2014 10:10:25 AM 0.0114 0.07
26-09-2014 10:10:40 AM 0.014533333 0.1
26-09-2014 10:10:55 AM 0.018266667 0.1
26-09-2014 10:11:10 AM 0.021 0.1
26-09-2014 10:11:25 AM 0.024333333 0.07
26-09-2014 10:11:40 AM 0.028266667 0.13
2) if i select time intervals hours then i should able to get grapgh betwen start and stop time
3) similarly with date.
TO get started with I need simple example where i can import and plot graph time Vs watt-hour
Here i got simple example but . All are giving error . is any library need to be added
But here he his taking first column data , I need second column data and 3rd cloumn data. How to change column data point here.
Code:Private Sub OK_Pressed_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK_Pressed.Click
Using MyReader As New Microsoft.VisualBasic.FileIO.TextFieldParser("Current.csv")
MyReader.TextFieldType = Microsoft.VisualBasic.FileIO.FieldType.Delimited
MyReader.Delimiters = New String() {","}
Dim currentRow As String()
Dim CurrentPoint As Integer = 0
Chart2.Series(0).Points.Clear()
While Not MyReader.EndOfData
Try
currentRow = MyReader.ReadFields()
Dim D As String = currentRow(0)
Try
Dim Y As Double = CDbl(currentRow(2))
Chart2.Series(0).Points.AddY(Y)
Chart2.Series(0).Points(CurrentPoint).AxisLabel = D
CurrentPoint += 1
Catch ex As InvalidCastException
If CurrentPoint <> 0 Then
MsgBox("Item " & currentRow(2) & " is invalid. Skipping")
End If
End Try
Catch ex As Microsoft.VisualBasic.FileIO.MalformedLineException
If CurrentPoint <> 0 Then
MsgBox("Line " & ex.Message & " is invalid. Skipping")
End If
End Try
End While
End Using
End Sub
End Class
