Chart Object Infomation

[12tkram]

Hi NT-8,

I am looking to get some info on the objects rendered on one of my charts .. I can do the following .. but what other info is stored and how to list all stored data for each onject ?

protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{

  base.OnRender(chartControl, chartScale);
  IList<Gui.NinjaScript.IChartObject> myObjects = ChartPanel.ChartObjects;
  foreach (Gui.NinjaScript.IChartObject thisObject in myObjects)
  {
      if(thisObject.Name == "someobject name){
           Print(String.Format("name :{0} type: {1}", thisObject.Name, thisObject.GetType() ));
      }  
   }

}

thanks in advance!

[NinjaTrader_Jesse]

Hello 12tkram,

It would depend on what object you are looking at as to what info would be available. For drawing tools you can review the relevant help guide page for that tool to see what properties it may have, alternatively you can look at the public properties in the drawing tools code using the NinjaScript editor.

There are some examples of getting drawing tool properties in the following link: https://ninjatrader.com/support/help...ub=drawobjects

An example of Lines properties: https://ninjatrader.com/support/helpGuides/nt8/line.htm

There are other inherited properties from the drawing tool base class which can be accessed in a generic way using DrawingTool type.

Other items that show up in the general chart objects list may be more difficult to find help information about, for those types you can try to make a dummy variable to explore using intelleprompt.
An example would be like the following:

Line line;
then type: line.
The period after line variable will cause the intelleprompt for that type will appear.

In the code you provided all objects are Gui.NinjaScript.IChartObject so if you wanted specific properties from a specific type you would have to also cast from the Gui.NinjaScript.IChartObject to the correct type. The above linked drawing objects example shows some casts being used.



I look forward to being of further assistance.

[12tkram]

Thanks Jesse and I think thats the problem, the docs do not go into enough details on the trypes of objects or how to dump all the info for each specific object type, or even how to determine what the object type is or how it was drawn .. is there a trace facility I could use ? I could filter the specific objects by name ( they show using the loop code above, but they do not show up as a specific type of object i.e. line/text etc ) then dump all info for that object ?

Maybe if I explain what I am trying to achieve, I have an indicator that prints different objects on a chart, I would like to count each object to keep a tally or each type, but I don't know how to group them using the info I get out of the loop becauase they all show up with the same name and type, so dumping all the info for each object could give me a handle on how to group them so I can keep a count, then I can alert on specific types and counts etc .. does that make sense ?

thanks again for your response so far

[NinjaTrader_Jesse]

Hello 12tkram,

The docs really don't go into that type of detail. NinjaScript is just C# so having a good foundation of previous C# experience will help a lot for exploring objects. What you are asking about is exploring types which can be done in the NinjaScript editor or visual studio by using the intelleprompt/intellesense. In visual studio you can also use the class explorer.

To count each type of object you wouldn't need to know anything about the objects, just what type they are to categorize them in your loops conditions. If you mean drawing objects you could just use the loop sample that we have in the help guide for that specifically.

foreach (DrawingTool draw in DrawObjects.ToList())
{
    if (draw is DrawingTools.Line)
    {
    }
}

You can also see the following example which is how you would find objects if you exported your code as an assembly which requires you to not use casts. You can get the type as a string instead:

foreach (IDrawingTool line in DrawObjects.ToList())
{
    if (line.ToString().Equals("NinjaTrader.NinjaScript.D rawingTools.HorizontalLine"))
    {
          Print(String.Format("Horizontal Line {0} detected!", (line as dynamic).Tag));
    }
}

https://ninjatrader.com/support/helpGuides/nt8/considerations_for_compiled_assemblies.htm?zoom_highlightsub=consider

I look forward to being of further assistance.