Plotting large volumes of data

[User (Legacy)]

Hi there,

I'm currently using the ChartFX control through C# to produce a scatter plot 

of a relatively large volume of data (approx 500,000 {x,y} pairs). I'm 

feeding the data to the chart through a ListProvider in the form of a 

collection of business objects, with each object of the general form:

class BusObj

{

    public int X

    {

         get { return m_x; }

    }

    public int Y;

    {

        get { return m_y; }

    }

}

The display is very slow (about 1min 40s for 500,000 points on a dual core 

3.2GHz machine with 2GB RAM). Can you offer any suggestions as to how I 

might plot this more efficiently?

[Software FX]

In such a large number of points, Chart FX defaults are not adequate.

There is a topic in the programmer's guide "Performance and Scalability" 

that talks about some of the issues. Most of the performance depends on GDI+ 

performance and the number of objects being painted.

The following properties significantly affect the performance when large 

number of points are used:

AntiAliasing

Gallery

MarkerShape: The default marker shape (marble) is the slowest. Rectangle is 

the fastest.

MarkerSize

Border

If you provide me with more details about your chart I can be more specific.

-- 

Francisco Padron

www.chartfx.com