Trendlines

[yeshujbp]

if (DrawTrendlines)
{
double y = anchor2Price - ((CurrentBar - anchor2Index) * ((anchor1Price - anchor2Price) / (anchor2Index - anchor1Index)));

if (Close[1] < y && Close[0] > y)
{

Draw.ArrowUp(this, "TrendBreakUp", true, 0, Low[0] - TickSize, Brushes.Green);
}
}

that code work properly but some time that not draw arrow .
what is wrong

[NinjaTrader_ChelseaB]

Hello yeshujbp,

Use prints to understand the behavior.

Below is a link to a forum post on using prints to understand the behavior.

https://ninjatrader.com/support/forum/forum/ninjatrader-7/strategy-development-aa/99209-date-conditions-not-working?p=791121#post791121

Are both conditions evaluating as true?

If you print the Time[0] along with the Low[0] - TickSize within the action block of the condition that triggers the drawing object call, do you see a print for the bar in question?

I am happy to assist with analyzing the output if you would like to include this along with the code of the print, and the time of the bar in question.


One note, the tag name of the arrow is not unique on each bar. This means that the object will be updated on a new bar instead of a new object being created.
From the help guide:
"2.Set unique tag values for each draw object, unless you intend for new draw objects to replace existing objects with the same tag. A common trick is to incorporate the bar number as part of the unique tag identifier. For example, if you wanted to draw a dot that indicated a buying condition above a bar, you could express it:
Draw.Dot(this, CurrentBar.ToString() + "Buy", false, 0, High[0] + TickSize, Brushes.ForestGreen);"

https://ninjatrader.com/support/helpGuides/nt8/en-us/drawing.htm

[yeshujbp]

THANKS FOR REPLY

Actualy I want to get a point where Trendlines cross any BAR.

[NinjaTrader_ChelseaB]

Hello yeshujbp,

Finding if a point intersects a line between two points would require custom logic.

The LineAlert indicator for NinjaTrader 7 demonstrated similar logic for finding when the close price intersected a manually drawn line. You can read the logic for this.

https://ninjatraderecosystem.com/user-app-share-download/alert-for-manually-drawn-lines/

This script does not exist for NinjaTrader 8 as the Alerts window provides this functionality internally in NT8.


This thread will remain open for any community members that would like to assist you with writing this custom logic.

You can also contact a professional NinjaScript Consultant who would be eager to create or modify this script at your request or assist you with your script. The NinjaTrader Ecosystem has affiliate contacts who provide educational as well as consulting services. Please let me know if you would like our business development follow up with you with a list of affiliate consultants who would be happy to create this script or any others at your request.


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