ONE Indicator which draws in two sub-windows

Hi Coders and programming experts

I have one simple question:
Is it possible to code an indicator that will open and draw output data in two subwindows when it is dragged onto a chart?

I have tried to find a solution in different MQL4 manuals and forums but with no luck.
If You know it is possible then let me know, and if You can link to a how-to-do-this-manual it's even better.

Cheers,
Tomas

Buffer values are always plotted to the main chart (if #property indicator_chart_window) or to the ONE AND ONLY indicator window they're assigned (if #property indicator_separate_window). There's no way to plot buffer values into another window. Of course you could make a 'draw-only' (slave) indicator and fill its buffers (for visible bars) via global variables stored by another (master) indicator.. but it would be slow (GVs are stored to disk) and doesn't really make any sense. Just make two or more indicators, let them calculate their respective stuff and only share key parameters (via GVs) to keep them in sync.

Objects (text, labels, lines, fibs, shapes, arrows etc etc) can be drawn to any window; in fact you have to specify a window in ObjectCreate() so you probably know that.

Hi MaryJane

Thanks for taking Your time to answer.
I was hoping that it was possible though, but the answer to may question will help me to be very specific when I order the indicator/EA that I'm planning on. First I have to do a little more thinking.

I wanted to get an indicator which will draw a tick based candlestick chart below a normal price chart (know that only tick bar 0 will correspond to price bar 0 time wise), and then have a custom indicator to reference the open/high/low/close values of the tick bar chart.

I know that this is easily obtained using LogTickData and PostTickData (with a regular price chart opened just above), but these two indicators draws the bars as a offline chart which excludes the possibility to utilize an EA.
I wanted to get around that by having an indicator to draw the price chart like on the screenshot below (it is not a tick chart in the indicator window - but You get the picture.

Thanks again...

Sorry I don't understand.. an EA running on a standard "online" chart should be able to access offline (updated) chart data. Or you can send simulated ticks to the offline chart or run the ea in loop mode and place it onto the offline chart.

If I understand anything at all ..you'd like to have a custom indicator displaying (some tick-based) bars and query it via iCustom() from within an EA to get some signals? That's a ridiculous way of doing what you probably need, imo. Why don't capture, log (via offline chart as repository) and process the ticks within the EA itself?

Thanks for sharing Your insight.

The end result I'm looking for is to have a custom indicator (slightly modified Complex_pairs1 - a MACD-like indicator) to draw with reference to open/high/low/close values of a tick based chart instead of a time based chart. And then ultimately run an EA using the output values from this indicator (drawing with reference to the tick based bars).

What I figured myself was to construct the tick bar chart below a normal price chart, and integrate this tick bar indicator with Complex_pairs1 in a single new indicator. Then let the EA reference this indicator.
But it's good to know that there are easier and more obvious ways to solve the problem.

So just to verify:
You suggest that it's better to use LogTickData/PostTickData to draw an offline chart with tick based bars. Then let the EA reference these bars and let the EA calculate the indicator output values, or can the EA be coded to reference the offline chart onto which the indicator is attached?

Cheers

Create an offline tick chart. Then you can simply add your MACD-like indicator and your EA directly to that offline tick chart.

Cool - Thanks.
Just read Your reply in another thread regarding offline charts and EAs.

Cheers
- T