Zoom in in the code

[blar58]

Hello,

I would like to know if there is a way to zoom in on a particular trading day but in the code.

For example I would like to programatically zoom the chart on today's trading.

Probably I would have to play with ChartControl and Y axis.

I know that it may be not supported but just a hint would be welcomed !


Thanks

[VTtrader]

I'm not sure exactly how you would want it to function, but I would start by looking at BarSpace, Time, LastBarPainted and FirstBarPainted.

Just a guess.

VT

[blar58]

I played a bit with LastBarPainted and firstbarPainted.
I was able to get only the day that I wanted to show. (which was 3 days ago)
So far so good. BUT putting the BarsSpace to 50 displayed only today or last day region.

The next step would be how to scroll to the day that I want to show (3 days ago).

I have somehow to move the XAxis to that day. How can I do that in code ?

Thanks

[NinjaTrader_Matthew]

Blar58,

While there is not a supported method to control the X Axis, I would suggest taking a look at this ChartScale indicator to get an idea of how this user was able to control the Y axis. Hopefully this will give you some ideas on how to proceed with your custom script:

http://www.ninjatrader.com/support/forum/local_links_search.php?action=show&s=&literal=1&search=axis&desc=1&keys=1&ents=1

[VTtrader]

Blar58,

Using this in OnStartUp, seems to set the LastBarPainted and scrolls the chart back.

ChartControl.LastBarPainted = 500;

So you would need to find the last bar for the day you want to go to.
Calculate the number of bars for the day, and set the bar spacing appropriately.

Something like that anyway.

VT

[blar58]

VTTrader

Thank you very much. You put me on the right track and I found the solution