Recent changes to feature-requests

(c#)There is any way to draw AbscissaData in the same order which in reading?

Munteanu Laura Loredana — Tue, 25 Sep 2018 16:46:33 -0000

Hello all,

Sorry if I did submit the ticket in the correct location or to the corect person but I'm a new member and I'm quite new using c#.
I'm wondering if there is any possibility to draw the AbscissaData in the same order which in reading in c#?
For IDrawable I'm using Grid and data which is coming for AbscissaData is a DateTime[] struct.
Ex: DateTime[] ={ 2018-09-25 11:25:35, 2018-09-26 11:26:35, 2018-09-24 11:25:35, 2018-09-23 11:27:35}

For the moment, the x-coordinates are displayed chronologically , meaning 2018-09-23 11:27:35, 2018-09-24 11:25:35, 2018-09-25 11:25:35, 2018-09-26 11:26:35 but I want it to be dispalyed in the same order which is reading.
Bellow you can find my method where I'm plotting the data.

Could please help me? I'm missing some method that I can use? Any hint would be very helpful
Many thanks,
Loreadana

GraphOneSerie(DateTime[] oDate, string[] variable, DateTime[] reboot, NPlot.Windows.PlotSurface2D npSurface, string text)
{
PointPlot npPlot1 = new PointPlot();
PointPlot npReboots = new PointPlot();

        //Font definitions:
        Font TitleFont = new Font("Arial", 12);
        Font AxisFont = new Font("Arial", 10);
        Font TickFont = new Font("Arial", 8);

        //Legend definition:
        Legend npLegend = new Legend();

        //Prepare PlotSurface:
        npSurface.Clear();
        npSurface.Title = "OBU";
        npSurface.PlotBackColor = Color.White;
        npSurface.DateTimeToolTip = true;

        //Left Y axis grid:

        Grid p = new Grid();
        npSurface.Add(p, PlotSurface2D.XAxisPosition.Bottom, PlotSurface2D.YAxisPosition.Left);
        npPlot1.AbscissaData = oDate;
        npPlot1.OrdinateData = variable;
        npPlot1.Label = text;
        npPlot1.Marker.Color = Color.Blue;
        npPlot1.Marker.Filled = true;

        // reboots series
        double[] vector = new double[reboot.Length];
        double[] thefirst = Array.ConvertAll(variable, double.Parse);

        for (int i = 0; i < reboot.Length; i++)
            vector[i] = thefirst.Max();

        npReboots.AbscissaData = reboot;
        npReboots.OrdinateData = vector;
        npReboots.Label = "Reboot";
        npReboots.Marker = new Marker(Marker.MarkerType.None, 0)
        {
            Pen = new Pen(Color.Red, 1),
            DropLine = true
        };

        npSurface.Add(npPlot1, PlotSurface2D.XAxisPosition.Bottom, PlotSurface2D.YAxisPosition.Left);
        npSurface.Add(npReboots, PlotSurface2D.XAxisPosition.Bottom, PlotSurface2D.YAxisPosition.Left);
        //X axis

        npSurface.XAxis1.Label = "Date";
        npSurface.XAxis1.NumberFormat = "yyyy-MM-dd" + "\n" + "hh:mm:ss";
        // npSurface.XAxis1.TicksLabelAngle = 40;
        npSurface.XAxis1.TickTextNextToAxis = true;
        npSurface.XAxis1.FlipTicksLabel = true;
        npSurface.XAxis1.LabelOffset = 40;
        npSurface.XAxis1.LabelOffsetAbsolute = true;
        npSurface.XAxis1.LabelFont = AxisFont;
        npSurface.XAxis1.TickTextFont = TickFont;

        //Y axis
        npSurface.YAxis1.Label = text;
        npSurface.YAxis1.NumberFormat = "{0:####0.0}";
        npSurface.YAxis1.LabelFont = AxisFont;
        npSurface.YAxis1.TickTextFont = TickFont;
        npSurface.YAxis1.AutoScaleTicks = true;

        //Add legend:
        npLegend.AttachTo(PlotSurface2D.XAxisPosition.Top, PlotSurface2D.YAxisPosition.Right);
        npLegend.VerticalEdgePlacement = Legend.Placement.Inside;
        npLegend.HorizontalEdgePlacement = Legend.Placement.Outside;
        npLegend.BorderStyle = LegendBase.BorderType.Line;
        npLegend.NumberItemsHorizontally = 4;
        npSurface.Legend = npLegend;

        //Update PlotSurface:
        npSurface.Refresh();
    }

Add SaveAs() to Windows.PlotSurface2D.cs to create a file

Michael Fitzpatrick — Sun, 29 Mar 2015 11:17:02 -0000

I am interested in contributing to this project.

Here's a prototype to what I've added so far:
/// <summary> /// Save as a picture file. /// </summary> /// <param name="FilePath">File name.</param> /// <param name="width">Image width.</param> /// <param name="height">Image height.</param> /// <param name="imageFormat">Image format.</param> /// <returns>True if file saved.</returns> public bool SaveAsFile(string FilePath, int width, int height, System.Drawing.Imaging.ImageFormat imageFormat) {}

Lines dissapear when zooming

Anonymous — Tue, 20 May 2008 14:23:16 -0000

Hi very nice tool,
found a problem though that I could not solve.
When plotting a line and zooming in the graph the
line will dissapear as soon as of the points
defining the line is no longer inside the axes limits.
Understand that it is probably an optimisation not
to draw lines outside the view, but the line should
still be visible if it intersects the window....

/NPlot fan

Unmanaged code wrapper

Anonymous — Thu, 03 Apr 2008 10:43:24 -0000

Great tool! Using it in a program to review historical futures market trading.

Does anyone have a wrapper to facilitate using NPlot in unmanaged C++? I'd love to use NPlot in our real time system, but I'm not very comfortable with interop yet.

Alternatively, if someone who is comfortable with interop could sketch it out for me, I could try to write some chunks.

Thanks.

- Mark

What is a DataSource?

Anonymous — Tue, 31 Jul 2007 12:21:54 -0000

Hi again ;-)

The PointPlot has a DataSource-property. Which requirements does the library have to objects that are used as data sources?

If I am to use - say a DataTable-object - how should this contain the coordinates in order to NPlot to understand it?

Thanks in advance.

/ Michael Banzon, mib@abc-tool.com

Interaction with the points in a PointPlot

Anonymous — Tue, 31 Jul 2007 12:17:50 -0000

Hi,

I'm writing an application that involves some charting using PointPlot, in NPlot.

I've written briefly about this issue in the past, but this process was somewhat stalled (mostly on my part).

I need a setup where I can click the plot surface of a PointPlot and then get the element that I have clicked. Ultimately the best solution would be to .Add() some kind of point-objects to the PointPlot and then having the PointPlot call some function whenever a Point is clicked.

Is it currently possible to do something like this is NPlot??

If this can be done with custom interaction handlers, can someone please point in the right direction about how to do this?

Thanks in advance

/ Michael Banzon, mib@abc-tool.com

Drill down

Anonymous — Fri, 27 Jul 2007 15:33:07 -0000

I came across the tool and wondering if I Can do some sort of drill down in charts created with NPLOT.
Thanks

LinePlot Editable interaction

Anonymous — Mon, 18 Jun 2007 12:24:09 -0000

This interaction allows to Select multiple points of a LinePlot, and allow the user to move in real-time the points of the graph. the idea is using a PointPlot to draw the selected points. At this moment, it works online setting OrdinateData and AbscissaData of the LinePlot.
I'm going to post a detailed information on CodeProject
Hope it is usefull
Marco Roello

Input parameter validation

Anonymous — Wed, 30 May 2007 22:17:29 -0000

This took way too long and it's obviously my fault, but some input parameter validation (and according error throwing capability) would be nice. I didn't set the height or width in the NPlot.Web.PlotSurface2D object I was using and kept getting a "Parameter is not valid" error. This error comes from the first line of the Render() method accessing the height and width members to render the bitmap:

System.Drawing.Bitmap b = new System.Drawing.Bitmap( (int)this.Width.Value, (int)this.Height.Value );

Once I set some required properties everything seemed to work pretty well. I like and I'm impressed. Thanks.

Custom Display of Coordinates

Anonymous — Wed, 30 May 2007 08:02:06 -0000

A user may want to display Co-ordinates in custome format ... say for example in a candle plot one may want to display the Open High Low Close points in the tool tip.

I tried in this way but not that good

in CandlePlot.CandleDataAdapter

public string GetCoordinateString(double x, uint stickwidth)
{
string s = "";
for (int i = 0; i < this.Count-1; i++)
{
PointOLHC pnt = this[i];
double x1 =this[i].X;
double x2 = this[i+1].X;
if (x>x1 && x< x2)
{
s = "Open\t" + pnt.Open.ToString("{0.00}") + "\nHigh\t" + pnt.High.ToString("{0.00}") + "\nLow\t" + pnt.Low.ToString("{0.00}") + "\nClose\t" + pnt.Close.ToString("{0.00}");
break;
}
}
return s;
}