Transferring a Strategy from 6.5 to 7

[laocoon]

Hello

I've been using a custom strategy in NT 6.5 for quite some time and never had a problem.
When I transferred it to NT 7, (following all the guidelines published here) I could compile it without a problem but when I applied it to a chart the indicator panel stayed empty (should have displayed a line) and the labels that should be drawn next to the candles didn't show either.

What can I do about that?

Thanks

[NinjaTrader_Bertrand]

Are you sure you enabled the strategy? Disabled would show a little 'D' next to the strategy name in your chart...just go for example to the strategies tab and click on the 'Enable' checkmark to start it...

[laocoon]

I'm sorry I meant to say a custom indicator, not a strategy...

The Log says: Failed to call method "Initialize" for indicator XYZ: "BarsInProgress" property can not be accessed from within "Initialize" method.

[NinjaTrader_Bertrand]

Thanks laocoon, certain properties can't be accessed in the Initialize(), could you please post your Initialize() contents so we can take a look?

[laocoon]

Sure, here you go:

Thanks!

protected override void Initialize()
{
//canvas = new Canvas (ChartControl, Bars, TickSize);


Add(new Plot(new Pen(Color.Red, 3), PlotStyle.Line, "ERGDN")); // Values[0] Puts a Red line over the blue ERG line only when it is going down
Add(new Plot(new Pen(Color.Blue, 3), PlotStyle.Line, "ERG")); // Values[1] ERG Blue line
Add(new Plot(new Pen(Color.Transparent, 2), PlotStyle.Line, "HIST")); // Values[2] HIST line, default transparent.
Add(new Plot(new Pen(Color.Lime, 4), PlotStyle.Bar, "wERGhistRising")); // Values[3] HIST bars rising
Add(new Plot(new Pen(Color.Black, 4), PlotStyle.Bar, "wERGhistFalling"));// Values[4] HIST bars falling

Add(new Line(new Pen(Color.DarkGray, 1), 0, "ZERO"));
Lines[0].Pen.DashStyle = DashStyle.Dot;
Add(new Line(new Pen(Color.Red, 2), _thresholdERG, "PLUS10")); // References +10,-10, ZERO
Add(new Line(new Pen(Color.Red, 2), -_thresholdERG, "MINUS10"));


Overlay = false;
PriceTypeSupported = false;

// Init user data series
mtm = new DataSeries(this); // Momentum = C - C1
absmtm = new DataSeries(this); wTSI = new DataSeries(this); wERGhist = new DataSeries(this);
wERG = new DataSeries(this); dirERG = new IntSeries(this); // just tracks color changes 1=up, -1=down, 0=invalid
dirHIST = new IntSeries(this); // just tracks color changes 1=up, -1=down, 0=invalid
this.BarsRequired = 1;

if (cType==ERG1Type.Trending) cTrend = true;
else cTrend = false;
if (cTrend) { m1 = 1; m2 = 1; m3 = 72; } // set modifiers for longer chart
else { m1 = 7; m2 = 0.5; m3 = 0; } // set modifiers for faster Trade labeling chart
bool cTrade = !cTrend; // simply readability to have the inverse of cTrend

minBreach = _thresholdBreach * TickSize;
bcTrans = Math.Max((bcAlpha * 10/255) + 3, 10);
}
// end of Initialize method

[NinjaTrader_Dierk]

You likely tried to access the "TickSize" property in your Initialize() method which is not supported.

[laocoon]

I'm not sure I'm following you here. The only thing I found regarding Tick Sizes is this:

TickSize is no longer reflective of splits. For splits use this:
double tickSizeSplitAdjusted = TickSize /
Bars.Instrument.MasterInstrument.Splits.GetSplitFa ctor(Bars.GetSessionDate(Ti
me[0]));

Unfortunately I don't know how this relates to the problem at hand.

Thanks

[NinjaTrader_Dierk]

>> minBreach = _thresholdBreach * TickSize;

This is a limitation. You can't access TickSize in Initialize(). We will clarify that in one of the next version of our docs.

[laocoon]

OK, is there a workaround I can use in the meantime?

Thanks

[NinjaTrader_Dierk]

The same limitation was there with strategies in NT6.5. One option would be putting the offending code in OnBarUpdate.

[laocoon]

I'm sorry but I don't follow you again:

-the indicator is working fine in NT 6.5
-the TickSize command is already in the OnBarUpdate part of the code

Thanks again.

[NinjaTrader_Dierk]

This is a new limitation in indicators which already was there with strategies on NT6.5. Please move the offending code to OnBarUpdate and the issue will be resolved.

[laocoon]

Got it, it's working, thank you very much!