Horizontal Lines

[trdr_bust]

Hi,

I'm trying to plot Horizontal lines on the Primary.

I'm trying to use one of the demos, but I can't seem to get it to work. 

In onTrade, when I pass in the trade price, it works OK(green line):

Code: Select all

 
@Override
public void onTrade(double price, int size, TradeInfo tradeInfo) {
    level1.addPoint(price);
}

bm_works.PNG (183.17 KiB) Viewed 8637 times

But when I pass in my own value, I don't see the line on the chart and the widget shows a pretty big value:
 

Code: Select all

 
 @Override
public void onTrade(double price, int size, TradeInfo tradeInfo) {
    double test = 61000.0;
        //level1.addPoint(price);
    level1.addPoint(test);
}

bm_nogo.PNG (178.63 KiB) Viewed 8637 times

Has anyone done something like this?  An opening Range Indicator, Pivot Points, something like that?

I've read over the forums, found this link(which is what I'm attempting to do):
https://bookmap.com/forum/viewtopic.php ... ntal#p4547

Also found this, seems like the same suggestion that I'm trying:
https://bookmap.com/forum/viewtopic.php ... ontal#p571

Yes, drawing a line is in fact placing points using Level 1 API....

I must be missing something, thanks...

Whole thing:

Code: Select all

 
package com.bookmap.api.simple.demo.indicators;

import java.awt.Color;

import velox.api.layer1.annotations.Layer1ApiVersion;
import velox.api.layer1.annotations.Layer1ApiVersionValue;
import velox.api.layer1.annotations.Layer1SimpleAttachable;
import velox.api.layer1.annotations.Layer1StrategyName;
import velox.api.layer1.data.InstrumentInfo;
import velox.api.layer1.data.TradeInfo;
import velox.api.layer1.messages.indicators.Layer1ApiUserMessageModifyIndicator.GraphType;
import velox.api.layer1.simplified.Api;
import velox.api.layer1.simplified.CustomModule;
import velox.api.layer1.simplified.Indicator;
//import velox.api.layer1.simplified.IndicatorModifiable;
import velox.api.layer1.simplified.InitialState;
import velox.api.layer1.simplified.TradeDataListener;

@Layer1SimpleAttachable
@Layer1StrategyName("Last trade: livex46")
@Layer1ApiVersion(Layer1ApiVersionValue.VERSION2)
public class LastTradeDemoNoHistory implements CustomModule, TradeDataListener
{
    protected Indicator level1;
    //protected Indicator level2;
    

    @Override
    public void initialize(String alias, InstrumentInfo info, Api api, InitialState initialState) {
   
    level1 = api.registerIndicator("tag1", GraphType.PRIMARY);
    level1.setColor(Color.GREEN);
    //double test = 61000.0;
    //level1.addPoint(test);
    }
    
    @Override
    public void stop() 
    {
    }

    @Override
    public void onTrade(double price, int size, TradeInfo tradeInfo) {
    double test = 61000.0;
    level1.addPoint(test);
    //level1.addPoint(price);
    }
}

 

[Andry API support]

Hi,
Primary panel:
the price value must be in pips. You can get pips value from the InstrumentInfo info object you get in the #initialize method.
For example, if pips is 0.25 and you need to plot at 60_000 the price must be 60_000/0.25 = 240_000;
Bottom panel:
It plots at the price you are passing.

[trdr_bust]

Yep, pips, got it, thanks

Works now, seems a bit heavy, I'd like to just draw the lines at a price level without having to respond to bar updates. "Backfilling" to provide the level when viewing history takes a while(idk 30 seconds, depending on how much history of course).

I guess to speed it up, i'd need to look at ScreenPainter.  I had a look, but got a little confused at how to convert a price level(in pips yep) to a screen coordinate.  If anyone has a demo on how to do this that to share, that would be cool.  I might have another go at the samples to see if I can figure it out....

[Andry API support]

Hi, here is a small example with a screenSpacePainter drawing a single last trade line.