Keeping rectangles

[eDanny]

I am drawing a rectangle in an area and after a certain number of bars the beginning of the rectangle disappears and starts moving forward. I want the rectangle to stay from the days opening till the close and also want it to stay and have a new rectangle plotted the next day with new parameters. I should be able to scroll back through the days and see the different rectangles still plotted.

Sample here:

Add(new Plot(Color.FromKnownColor(KnownColor.OrangeRed), "Zone"));


{
{
if (CurrentBar == 0)
return;
}

Zone.Set(0);

daystart = Bars.BarsSinceSession;

DrawRectangle("Zone", false, daystart, Zone, 0 , Zone + 3, Color.OrangeRed, Color.OrangeRed, 2);
}

[NinjaTrader_Dierk]

This might help: http://www.ninjatrader-support.com/v...ead.php?t=3419

[eDanny]

No help at all, and have read it before. If you refer to my code you can see I do plot a rectangle but it doesn't behave as I would like. I tried this and had bad results:

DrawRectangle("Zone" + CurrentBar, false, daystart, Zone, 0 , Zone + 3, Color.OrangeRed, Color.OrangeRed, 2);

It turned my rectangle solid until about the last 10 price bars, and then gradually lightened up. Also a rectangle was plotted for the previous day at the same level. I need one long rectangle plotted throughout the day, from beginning till close, and stay on chart even when the next days rectangle is starting to plot at a different level.

[NinjaTrader_Dierk]

The key factor is the
"Zone" + CurrentBar
which you figured out already by the link I provided. This makes your rectangle unique. You now would need to figure out the startBar and endBar. As soon as CurrentBar==endBar you can issue the DrawRectangle function.

[eDanny]

That makes sense but I can't see how to define "endbar".

Add(new Plot(Color.FromKnownColor(KnownColor.OrangeRed), "Zone"));


{
{
if (CurrentBar == ???) << endbar?
{
if (CurrentBar == 0)
return;
}

Zone.Set(0);

daystart = Bars.BarsSinceSession;

DrawRectangle("Zone" + CurrentBar, false, daystart, Zone, 0 , Zone + 3, Color.OrangeRed, Color.OrangeRed, 2);
}
}

[NinjaTrader_Dierk]

Sorry, I don't know by what logic your rectangle would get "closed" (which is the endBar).

[eDanny]

Exactly. I don't know if it would, looks like not. Just using this for the first time today and trying to debug.
Look at edited post above yours.

[NinjaTrader_Dierk]

You need to define and code the logic on when the "endBar" would get reached.

[eDanny]

You need to define and code the logic on when the "endBar" would get reached.

I see that but don't know how to define the end of day.

[NinjaTrader_JoshP]

You can try checking DateTime.Now against the bar's timestamps to determine if the day is over.

[SteveB]

It would be nice to be able to provide a StartDateTime/EndDateTime (instead of BarsAgo) & let DrawXXX do the rest...

(with EndDateTime being able to draw into the future)

[eDanny]

I still have resolved this issue. I have no idea how to stop the rectangle and start a new one the next day while keeping the old.

[SteveB]

Each Rectangle is identified by its Tag.

To start a new Rect; change the Tag.

The hard part (and undesireable use of resources) is to redraw the Rect with every OnBarUpdate event, having to calc the BarsAgo field.

It would be nice to draw it once...and use DateTime to define the left & right sides.

[NinjaTrader_Ray]

You could use the GetBar() method which accepts a time parameter and retuns n bars ago.

http://www.ninjatrader-support.com/HelpGuideV6/GetBar.html

[eDanny]

Why doesn't something like this work? Doesn't the tag effectively change every day and begin a new rectangle?


daystart = Bars.BarsSinceSession;


DrawRectangle("Test" + Time[0].DayOfWeek, false, daystart, TestLow, 0 , TestLow + 2, Color.Orchid, Color.Orchid, 1);