Bar with dash

[moti]

Hello,

I like to create a bar with a colored dash in it. I can not get it to work. I want the dash to be the width of the bar and have a line size that scales with the graph.

I tried the following (and lots more):

• a not continuous line, still draws a continuous line (do not understand what continuous intends, manual: Sets the continuous option for the path)

PathDescriptor pathDescriptor1 = new PathDescriptor(Inputs.DASH_ON_BAR, "A dash on a bar", Color.RED, 3, null);
pathDescriptor.setContinuous(false);

• a line of dashes, which draws a line of dashes, however the size does not follow the Enums.Size argument (the dash looks always small) and the dash not scale with the graph (tried to set width to 0 with setFixedWidth for auto sizing, manual: Sets the fixed width for displaying bars (null for dynamic width). As a result with a few bars on the screen a very small dash is shown.

PathDescriptor pathDescriptor1 = new PathDescriptor(Inputs.DASH_ON_BAR, "A dash on a bar", Color.RED, Enums.PointType.DASH, Enums.Size.LARGE, true, false, true);
pathDescriptor.setContinuous(false);
pathDescriptor.setFixedWidth(0);

Code used to fill the line:

rd.declarePath(Values.DASH_ON_BAR, Inputs.POC_BAR);

dataContext.getDataSeries().setPathColor(index, Values.DASH_ON_BAR, color);
dataContext.getDataSeries().setDouble(index, Values.DASH_ON_BAR, price);
dataContext.getDataSeries().setComplete(index);

I do not like to use markers as it will just create a marker per bar and these do not scale. I have a working solution in a figure, that just draws dashes in all visible bars, I want to get rid of that as it is a special. It should be possible with the descriptors somehow, I think.

How to do this with a descriptor (dash has width of bar and dash line size that scales with the size of the chart) ?
Moti.

 

[moti]

like this, as I made in a Figure (with drawContext.getBarWidth and drawContext.getTckheight), but want to have in the regular drawing mechanism with the descriptors (for scroll smoothness)

 

[sunnywalia]

Maybe I'm not fully understanding what you are trying to accomplish but I would use Line:

https://www.motivewave.com/sdk/javadoc/com/motivewave/platform/sdk/draw/Line.html<init>(long,double,long,double,com.motivewave.platform.sdk.common.PathInfo)

Basic idea below. Where I have getSetting...BOTTOM_GUIDE you would put in your path info.

        int index = series.size()-1;
        
        if (index >= 0)
        {
            
            for (int i = 0; i <= index; i++)
            {
                double mid = (series.getHigh(i) / series.getLow(i));
                var line = new Line(series.getStartTime(i), mid, series.getEndTime(i), mid, getSettings().getPath(Inputs.BOTTOM_GUIDE));
                addFigure(line);
            }
        }

 

[moti]

Thank you for the answer, I already posted my own answer in this thread but the answer is removed (like other answers of me in other threads from three weeks ago), so again:

In the end I released it by using a PriceBarDescriptor with as priceBarTtype Enums.PriceBarType.FLATSTICK and setting the value for the dataSeries to a PriceData object.

Something like this:

// initialize
pocBarGroup.addRow(new PriceBarDescriptor(Inputs.LINE, "A dash on a bar", Enums.PriceBarType.FLATSTICK, Enums.BarInput.CLOSE, true, true));
rd.declarePriceBar(Values.LINE, Inputs.LINE);

// set price
dataContext.getDataSeries().setValue(index, Values.LINE, new PriceData(price + halfTickSize, price + halfTickSize, price - halfTickSize, price - halfTickSize, barColor));
dataContext.getDataSeries().setComplete(index, Values.LINE);

The height and witdth of the dash (priceBar) are scaled by Motivewave.