Color with less Opacity in a Data Series

[ij001]

Hi NT,

I had a quick question, as I could not find the answer in the forum.

I read how it is possible to add a custom color. That is, add in the R,G,B color. That works.

However for my purposes, I would like to use any color on the palette with a lower opacity for easier readability.

Since it is a Data Series, not an indicator, I do not have access to add in a line of code for opacity.

Any suggestions on how this can be achieved?

Here is a screenshot of my Data Series, attached.

Thanks Irv

[NinjaTrader_Kate]

Hello ij001,

Thank you for your post.

You could create an indicator that you could apply to the chart to automatically adjust the opacity of the bars.

You can find the color the user chose for the up and down brushes from ChartBars.Properties.ChartStyle.DownBrush.Clone(); and ChartBars.Properties.ChartStyle.UpBrush.Clone();, clone those to a temp brush, adjust the opacity, freeze the temp brush and then assign it to BarBrushes[0] for each bar. I'm attaching a simple example script that demonstrates.

Please let us know if we may be of further assistance to you.

[ij001]

Hello ij001,

Thank you for your post.

You could create an indicator that you could apply to the chart to automatically adjust the opacity of the bars.

You can find the color the user chose for the up and down brushes from ChartBars.Properties.ChartStyle.DownBrush.Clone(); and ChartBars.Properties.ChartStyle.UpBrush.Clone();, clone those to a temp brush, adjust the opacity, freeze the temp brush and then assign it to BarBrushes[0] for each bar. I'm attaching a simple example script that demonstrates.

Please let us know if we may be of further assistance to you.

Hi Kate,

I have been using the attached indicator since your post. It definitely is easier on the eyes.

Today, in the Log, it printed in orange:

"Brush series exceeds the maximum number (65535) of unique brushes"

How do I set the number of brushes and then it can restart once exceeded?

Please let me know, if there is a snippet in the NT8 guide.

Thx Irv

[eDanny]

The problem is that a new brush is created for every change of bar direction in OBU. Try using two custom brush names, one for the UpBrush and one for the DownBrush, and do the cloning, opacity and freezing in State.Configure. Then just use the two brushes in OBU.

[ij001]

I found a work around with opacity that fits my needs, instead of creating an indicator.
I wanted to share it, in case someone else finds it useful.

My example:

- SpringGreen is my color of choice
- I want 50% opacity, so it is easier on the eyes

1. Print screen and use MS Paint to get the RGB of SpringGreen. i.e. RGB ~ 4, 255, 129
2. Go to NT Color Picker and add % of opacity before the RGB

That is, 50, 4, 255, 129



See article below

ARGB (Alpha, Red, Green, Blue) Value

Transparent Brush

A comma-separated ARGB value (eg. "50, 255, 192, 203" for Pink with 50% Opacity)

https://ninjatrader.com/support/helpGuides/nt8/NT%20HelpGuide%20English.html?using_color_pickers.htm