Add Data Points From Double() Array To Existing Chart Series?

Jun 21, 2012

I have an array of type Double() (1 x n) that I am trying to quickly plot on a graph I've already set up. The only thing I want/need to do is take my array and store it as data points (y-axis values) in the series I already have. What's the best way to do this? Also, will the data points that are plotted change as my array changes, and if not, how would I replot those new points and get rid of the old points?


ASP Chart Labels To Display At The Data Points On Multiple Series ASP.NET 4

Mar 9, 2011

I have an ASP Chart (v4) which displays the data I need perfectly. I want it to show labels at the top of the data points and I am having some difficulty with it. Here is my code that works for both series but does not display the labels:


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Aug 25, 2010

I'd like to get suggestion in both C# and VB.NET I created Chart like the following image:


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Mar 23, 2012

How do I dynamically add or remove a chart series on a WinForm.  To date all my MS Charting experience has been dealing with ASP.Net charts with static sql select statment to a SQL Database.  In the new project that I have been assigned I have different cities with different amounts of points that they want monitored.  One city might have 3 an another might have 5 or 7 so I can't hard code the amount of series that I need.  It needs to be set up so the amount of series can be flexible depending on the city selected and then display those points on the chart.

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Point Connections Through Series Of Points?

Nov 21, 2009

The below photo shows that point 4 is connected to point 1 while point 5 is not connected to point 1 according to the flow direction. How can I programme this?

The below code shows the connections between nodes where the row of the matrix represents "FromPoint" and the column represent the "ToPoint".Public Class Form1 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase .Load


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Instead Of Defining The Points In Series Collection Editor?

Apr 29, 2012

Instead of defining the Points in Series Collection Editor, can I define them from textboxes, numeric up down or something like that?

Example: Having a numeric up down, the number I put there appears as Y value for a X value that never changes, even when I change the numeric up down value.

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Offset The Points In A Polygon Without Having To Change Each One Individually The Points Are In An Array?

Apr 20, 2010

is there a way to offset the points in a polygon without having to change each one individually the points are in an array

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Jan 7, 2010

I am able to place a single series of chart data with my code but I cannot for the life of me figure out how to add a second series. I can add the Series ... I can Select the series but cannot with out errors figure out how to put data the the series' that I am creating ...

Ol' Mitch
xlApp.ActiveChart.SeriesCollection(1).Values = Rng1 <-- Error
xlApp.ActiveChart.SeriesCollection(2).Values = Rng2 <-- Error


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.net - Get The Databound Member From GUI Populated MS Chart Series

May 9, 2011

I have a set of charts in a form. These are "canned" charts and will only be updated when new data comes in (typically on a monthly basis). I have created each chart by binding (bounding?) a data source to it in VS2010 using the Properties slide out window. I set the DataSource to a data source table that I set up in the .XSD file. In the Series property GUI I have set up the XValueMember and YValueMembers from the available columns in the data table I set in the previous step. I have 6 tables in my DataSet. One table relates to one Chart (Chart1, Chart2, Chart3, etc) in my form.

What I would like to do is programmatically get the data table name from the Chart properties. I have tried doing something like:

ch1Table = Chart1.DataSource.DataMember.ToString

However this fails due to Option Strict disallowing late binding. I am probably missing something obvious here but I cannot see it.

So, how do I get the bound data table name from the set properties of the chart? I am using MSChart Control 4 and VS2010 and building a VB.NET WinForms app.

For each of the 6 charts there is an associated System.Windows.Forms.BindingSource. What I need to do is programmatically get that BindingSource, then get the DataMember (which is the table name I need) for each chart.

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Apply A Generic Template To Chart Series

May 17, 2011

Apply a generic template to chart series.[code]Note that the bars are unstyled while the chart seems to style just fine.The documentation regarding built-in .NET charting is woefully thin.Can anyone help me get my generic templates to work?

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Chart Control - Assign Each Series To A New Point?

Jul 18, 2011

Im starting to learn how to use the chart control in VB .how you create a "new" column because atm all the time i add series it puts them side by side.Ive looked at the documentation for the control and the examples but they dont seem to cover this , or i could find it .Now how would i assign each series to a new point?So item 1 would go above column 1 and item 2 above column 2 etc.The code i have at the moment is a test code .

Chart1.Dock = DockStyle.Fill
For i As Integer = 0 To 10
Dim newSeries1 As New Series[code]..........

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Mar 4, 2012

How do I plot multiple series (say about a thousand) on one chart at runtime?

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Jul 19, 2011

Is there is a way to remove the white box around the series label in a chart. I am using the built in chart from the toolbox in Visual Studio 2010. This is the last part I need to finish the appearance of the chart to make it look the way I want.

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Recreate/redraw A Chart With Different Series At Runtime?

Mar 17, 2012

I am using a button on a form which creates a chart at runtime when the user clicks the button. it works ok for the first time but when I select the button the second time I get a square diagonal box  or indexoutofrange Exception.Note: I have another button that clears the series from the chart before reselecting the button that creates the chart.  

Below is the code segment 

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Static Dim counter As Integer = 0


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Apr 2, 2012

Im trying to plot the reading of 20 or more thermocouples in a single chart area.But it seems that the build in charting in can't handle that. My program just crashes when adding a series somwhere between the 14th or 18th series.Anyone know of any setting i can change or a better charting plugin?

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Change The Colour Of The Individual Bars Of A 3D Bar Chart - Not The Series?

Jan 7, 2011

imagine an array of data containing a gray scale image and you want the bar chart (say 20x20) to display  a section of that image as both the magnitude of the data and its shade of gray. if you were to look vertically down on the 3D barGraph you should see the section of the image. Is this at all possible? The projetc relates to clutter intensity in a radar image if this interests you.

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Generating Multiple Series For Chart From Same Data Source

Jul 6, 2011

I am importing data from an excel file, and it is stored in a dataset. The data is then filtered with a binding source, and that data is outputted into a datagridview. The filtered data in the datagridview contains data for 2 identification numbers. I want to graph each ID number in a chart on their own bar, in either a stacked bar graph, or a double bar graph.

I am having trouble assigning each series to an ID number: I have tried using multiple binding sources, but each seems to override the previous giving too much/too little data. I have tried using multiple datagridviews, however I cannot assign more than one datagridview as the datasource for the chart. The code I have pasted below outputs a double bar graph, however both bars graph the same ID number.

Private Sub dataButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles dataButton.Click
Dim cnRange As String = "provider=Microsoft.Jet.OLEDB.4.0; " & _
"data source='" & strFileName & "';" & _
"Extended Properties=""Excel 8.0; IMEX=1; HDR=No;"""
'moApp.Visible = True
[Code] .....

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Loop To Create Multiple Series In Chart Control

May 12, 2012

I am trying to build a function that returns a chart. I want to have a parameter to account for times where i may need more than one series. How does one loop through to create multiple series? I would think you would need a variable for each series. The function is below. I would think that if there were 5 series that each of the "Dataseries" variables should have their own name. Do I then refer to them by index only?


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Loop To Create Multiple Series In Chart Control?

Jan 15, 2009

I am trying to build a function that returns a chart. I want to have a parameter toaccount for times where i may need more than one series. How does one loop through to createmultiple series? I would think you would need a variable for each series. The function is below. I would think that if there were 5 series that each of the "Dataseries" variables should have their own name. Do I then refer to them by index only? Public Shared Function MakeChart(ByVal form As Form, Optional ByVal numseries As Integer = 0) As Chart

' Add any initialization after the InitializeComponent() call.
Dim SampleChart As Chart = New Chart()
Dim MainChartArea As ChartArea = New ChartArea()


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Jul 15, 2010

I have data in data table like below.

I am trying to make graph like below using chart control (made graph in excel with some test data)

points are X and Y values. lines are linear, exponential, logarithmic and power values.

So how can I make this chart in ( or c#)?

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Unable To Display More Than 500 Points In MS Chart?

Jan 7, 2012

I wrote the following program in I am reading 2000 data points XY points from csv file into oledb connection and displaying it into the MS cHART but it is displaying only first 500 points...

Dim cn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=C:;Extended Properties=""Text;HDR=No;FMT=Delimited""")
Dim da As New OleDbDataAdapter()
Dim ds As New DataSet()


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Chart Control - Bind Data To Different Series From Tables In DataSet?

Nov 30, 2011

I think my subject sums up what I am interested in knowing. I am looking to create a chart where Series1 is from Table1, Series2 is from Table2 in the given Dataset. My code below doesn't throw any errors, but it appears to be grabbing the data for each series from the first table.

Imports System.Windows.Forms.DataVisualization.Charting
Public Class Form1
Public Sub New(ByVal ChartData As DataSet)
' This call is required by the designer.
[Code] .....

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Create A .net Chart Object With A Series Based On A Data Subset?

Apr 8, 2012

I'm working in VS2010 on a visual basic application. It takes in serial port data, writes it to an access database, and then graphs the data.The data only comes in once every minute, so it's not like I'm building an oscilloscope. Right now, the chart is reading from the database using a table adapter and graphing just fine, so long as I keep the number of records in the database low.If I add too many records to the database, the chart shows a red "X" through it. I've played with changing the axes, but it is still a problem.I don't really need to graph the whole database.The twenty most recent records would suffice.How can I make a chart series with only a small subset of the database in it.Perhaps it cold be populated with a query?

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Graph - Chart Axes - Connect The Data From The Array And Use It On The Chart

Mar 7, 2011

My requirement is to graph (scatter graph) data from 2 arrays. I can now connect the data from the array and use it on the chart. My question is, how do I set the graph's X- and Y- axes to show consistency in their intervals?


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Forms :: Chart (Series Colors, Graph Refresh On Timer, Etc) Application That Ties Into A SQL Database On The Back End

Dec 29, 2011

I am working on an application that ties into a SQL database on the back end. Currently the main form contains a series of combo boxes (Graph type, data format, location, and customer), two date pickers, and a button to launch the selections in a new form. Everything works just fine except there are a couple of things I can't seem to accomplish.

Example Data:


Case Select (with commented out lines for variations attempted):


1) I would like to be able to use some sort of case statement to color the bars in my chart based on value. I have tried approaching this in a couple of different ways but neither of the options seem to work. First, I tried this (the If Not is used because depending on what values are passed to the stored procedure in SQL, different columns will be returned):


Only one series is created with this method, so I can see how/why a Select Case would set all bars the same color. I have also tried creating a series for each row in the returned dataset but it results in 22 bars of different colors, for each of the rows (484 bars):


So is there any way to modify the second set of code there to only select the value from the "Percent TMHB" cell that corresponds with Row(i), rather than ALL values from the "Percent TMHB" column for EACH Row(i)?

2) Since I am drawing/creating these graphs in a new window, is there any way to also create a new timer on the "newFrm" and have the tick refresh the data? I've struggled with this but I feel like it should be easy. Say someone chooses a "TMHB", "Percentage", "Chicago", "All" (Graph type, data format, location, customer) and launches the graph, which opens in a new window, then they want to do "TMHB", "Percentage", "LA", "All" and have both windows up, refreshing automatically throughout the day. Can I somehow store the SelectCommand.Parameters values in the new form/timer so that it will query the database again every 5 minutes?

Example code for the StoredProcedure and creating the new form:

If combo_GraphType.SelectedItem = "TMHB" Then
Dim newFrm As New Form
Dim newChart As New Chart


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How To Take 3 Or 4 Decimal Points Of A Double Variable Without Round Off

Apr 18, 2012

I have a double value like 3768.595863. if i round this value then i will get 3768.596 but i want can i get that?please reply.

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How To Modify An Existing Instance Of A Chart

Oct 24, 2011

In the same class I have
Dim WithEvents YMDChart As Chart
Dim WithEvents YMDChartArea As ChartArea
Public Sub PlotYMD() handles
YMDChart = New Chart


But here at line 5 I have an error saying that I am not refering to an existing instance whereas I am.If think it is because at this step the YMDChart is dead even if it is present on my form. I have tried with the declaration "Static" but it is only possible within a method and is incompatible with "with event".

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Reset / Clear An Existing Chart To Display New Data

Mar 26, 2012

I currently have a chart that plots lines of a changing value every time it is called via a timer.

Everything is running as I expected and I am happy, but now I want to be able to press a [STOP] button which will stop the timer and stop the graph from updating, (which I have coded and is now working OK), BUT I then want the code under this [STOP] button to clear everything from the graph, so when I re-start the timer, the graph is cleared and starts plotting fresh points on a clean graph.

The problem I currently have is that when I press the [STOP] button and then press the [START] button, the new lines that get plotted are "added" to the existing lines that are already on the chart, instead of having a new "blank" chart, with no data on it.

So what I am really asking is does anyone know if it is possible to reset a chart clearing everything off it so it is ready to start displaying fresh data?

I was hoping it was something like: "Chart1.Clear" or something simple like that, but I can't seem to find anything that will do it.

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VS 2008 Finding/Changing Range From Existing Excel Chart?

Aug 2, 2011

I have an Excel template that contains numerous pre-defined charts and a program that opens this template and collects data used to populate the charts. This works great but I now want to adjust the series length so that the charts only used the data collected (not a range of 32000). I'm trying to iterate through the charts and determine the range for each series of each chart but not having much luck. The snippet below allows me to see the xvalues but does not return any information as to where this data is located. Does anyone know how to extract the range for each series in a chart?


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VSTO - Excel Chart, Subtitle For Chart - Access Chart Text Box From Code?

Oct 14, 2011

I have a chart in Excel that I'd like to use a subtitle on. There is no SubTitle Property on the chart object, so I looked in the Excel User interface and found that you can only create a sub-title by using a text box. The text box looks like its associated with the chart, not the worksheet, so how would I access that text box from code?

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Oct 2, 2009

I'm trying to create an array of Points but can't seem to get it right.

I can create an array of Integers just fine.

Dim MyArray() as Integer = {1,2,3,4,5}

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Mar 23, 2012

how can i sort an array of points...? elements added out of sequence causing wrong shapes with

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Feb 1, 2011

As per this illustration, I'm trying to increase the size of an existing array from 111 to 114 to be consistent with existing code.  I need topreserve the existing values and add 3 new items to the end of the existing array of booleans,

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Mar 2, 2009

I'm trying to generate a list of random points of a 2d array.


I need to process each array location, but I would like it to be in a random order.

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Apr 20, 2011

I'm creating a simple programming assignment in Visual Basic 2010.(Don't know if it matters, but I'm working in MS Visual Studio.The program consists of two windows forms and a module.Everything works fine except for this one loop I'm trying to use to display whether the answers were "correct" or "incorrect".[code]

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Jan 31, 2010

how can i inflate an array of points which describe a polygon?

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May 9, 2011

I have an global array of points that i want to plot in VB. say X and Y points, and typically they have values of +/-12000. Now I've not done graphics work for a long time and when I did, I used OpenGL with C. Now I need a GUI i'm using VB 2008. Firstly, what's the best method of rendering the array of points? should I use some port of OpenGL? GDI? or what?

Secondly, can I simply print to perhaps a Panel on hit of a button? Thirdly, do I have to place any line drwing code in an "OnPaint" event handler? Finally (for now) if my array represents points in a space much larger than the painting surface, how would I scale and scroll the final image within the the proposed Panel? I look forward to your advice.

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Apr 30, 2010

I've rewritten my program so it would be more .net friendly (meaning I try to draw in picturebox.Paint event).

I try to use DrawLines using array of points, which are added by user one by one, but I can't figure out how to force my program to only use points that have been set by user and not the whole array.

When I call DrawLines pointing at my array of eg. 10 points and only 5 had been set, I end up with a nice set of lines with the last going to the upper left corner (0,0) and supposedly staying there for 4 more points, which is unacceptable.

I think of using ReDim Preserve each time, but I am not sure if it is the most efficient way to do this.

Anyone can think of something more elegant before I implement this redim monstrosity?

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Jun 12, 2012

just hoping that someone may be able to assist me to convert system.array to double() array.

Declarations are as follows:

Private f_Data As System.Array

Private f_Measures() As Double

Private  f_NumberOfObservations As Integer

I then 'fill' f_Data from a range in an Excel worksheet as follows:

f_Data = wsXLSData.Range(wsXLSData.Cells(1,1), wsXLSData.Cells(8, 1)).Value

This seems to work OK. Upon checking f_Data is indeed filled with 8 double type numbers.

I then try to convert this system.array to a double array as follows:

For i As Integer = 0 To f_NumberOfObservations - 1

f_Measures(i) = f_Data(i + 1, 1).value
I then get an error pointing to the line ' f_Measures(i) = f_Data(i + 1, 1).value' of type MissingMemberException was unhandled by user code'

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Dec 9, 2010

I am using VB express 2010 and I have the following problem: I would like to make a line chart of an array.For example: the daily mean temperatures (Temp(365)) and in the x-axis the date.Do I use the chart option of the toolbox? And how do I link this to my data? Or is it better to program everything myself? How do I start?

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Feb 21, 2012

I have Date and Time available in xaxis() array format. I would like to assign this to x axis of the MS Chart. My all other data is in datatable format and already have assigned series to this values.Chart1.Series(0).Points.DataBindXY(xaxis, yaxis).. but it gives me error as i do not have valid values for y axis.

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May 17, 2012

So I have a 2D array of data, specifically, one "Cv" value for every 10% increment. I have been able to get the Cv's plotted vs % open with the following method:

Private Sub btnPlot_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPlot.Click
Dim tempString As String


I haven't yet looked into this, but if there's any way to also export this graph as an image into an excel spreadsheet, We will be creating several spec sheets as excel workbooks and we will need to be outputting standardized sheets, which is why I'm trying to make this an application instead of directly implementing the code in Excel with VBA.

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Apr 13, 2009

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Mar 2, 2009

I have an associative arry with key,value pair. I want to set the value of an existing key to some variable that is ok. I can even check whether the value is null or not. But how to check whether the key itself exists or not?

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Aug 30, 2011

I have just started to work with Webservices and the vendor have provided me with a wsdl reference file.I have added the file to my project.The examples the vendor provide is written in C# (which I wish I was programming in) but I'm a old school VB programmer so I'm trying to map it over. In the examples they seem to initate a new array in an existing object but I can't figure out how to do this in VB?The example shows the following (C#)

Security_Authenticate sec_auth = new Security_Authenticate();
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