drawing on tick charts

[td_910]

Hi,

I thought this would be easy task. But not so. I like to draw a text object on chart a certain time before news report.
I'd do it by hand, but you can't draw objects, e.g. vertical lines on tick charts ahead of time, like on time based charts.

            int news1 = 143000; string newsS1 = @"news 1";
            int news2 = 150000; string newsS2 = @"news 2";
            int news3 = 160000; string newsS3 = @"news 3";

            if (ToTime(Time[0]) >= news1-2000 && ToTime(Time[0]) <= news1)
                BackColorSeries[0] = Color.Gainsboro;
            //    DrawText("News1", false, newsS1, -4, Close[0]-0*TickSize, 0, Color.Orange, new Font ("Arial", 8), StringAlignment.Center, Color.Empty, Color.Empty, 0);
            //else RemoveDrawObject("News1");
            
            if (ToTime(Time[0]) >= news2-2000 && ToTime(Time[0]) <= news2)
                BackColorSeries[0] = Color.Gainsboro;
            //    DrawText("News2", false, newsS2, -4, Close[0]-0*TickSize, 0, Color.Orange, new Font ("Arial", 8), StringAlignment.Center, Color.Empty, Color.Empty, 0);
            //else RemoveDrawObject("News2");
            
            if (ToTime(Time[0]) >= news3-2000 && ToTime(Time[0]) <= news3)
                BackColorSeries[0] = Color.Gainsboro;
            //    DrawText("News3", false, newsS3, -4, Close[0]-0*TickSize, 0, Color.Orange, new Font ("Arial", 8), StringAlignment.Center, Color.Empty, Color.Empty, 0);
            //else RemoveDrawObject("News3");

This is my code (I changed the text object for colored background) and this is result. I marked the bars, that have close times greater than news time with blue dots.

http://screencast.com/t/cK9c8Dp3EW

1st news drawn ok, 2nd completely disappeared, 3rd only one bar in advance

Am I missing something?

This is June ES 2000t chart

Cheers

Thomas

[NinjaTrader_Bertrand]

Hi Thomas, the issue is very likely found in the timestamp resolution provided by the 2000T chart - as the charts would not depend on a time component for the bars creation. So the time point you intent would be only approximate by using a tick series - the bars could close whenever the tick count would be up, not at a certain time.

What you could do is add a minute series for example into this study and then access those minute based timestamps for your checks via Times -

http://www.ninjatrader.com/support/helpGuides/nt7/times.htm?zoom_highlightsub=Times

[td_910]

Hi Bertrand,

Thanks. Yes, right, there are no certain time intervals for the closing times of tick generated bars.

That's why I was using a range condition to check for bar close time.

if (ToTime(Time[0]) >= news1-2000 && ToTime(Time[0]) <= news1)

But still no success.

[NinjaTrader_Bertrand]

Well, you got success with this condition according to the resolution offered in the data. There's only so far you could go with non time based bars as to hitting the time exactly as desired.

[td_910]

Well, I know about the resolution of the data, that's why I'm using range condition. 20 min before news to news time.

I marked the bars, that should fit that condition on 2nd and 3rd news event.

http://screencast.com/t/bK8yppTXT

1st news time and bars are displayed correctly - isn't that strange?

Thomas

[NinjaTrader_Bertrand]

Thomas, apologies - I see the issue now for your 2 other time conditions - if you substract 200 from the 1500 or 1600 Int's you do not arrive at valid times. Try substracting 6000 instead...and it should work then.

[td_910]

Hi Bertrand,

Thank you. I think you figured it out. Its a bit complicated it depends, what time one is subtracting the 20min from. If from full hour one has to subtract 6000, if from lower (like 17:59 one needs to subtract 2000 only, and when subtracting from 17:19 one has to use 6000 again. Tricky.