How to prevent re-calculation?

[bicou]

Hello
I have developed an indicator which, when placed on the chart, is displayed correctly but as soon as a new bar appears, it is erased and only the new bar is displayed.
I imagine this is due to the condition if ( BarsInProgress != 0 )...
I'd like to know how to remedy this problem.
Thanks for your help.

[bltdavid]

Your code has a bug.

I doubt BarsInProgess has anything to do with your problem.

As far as preventing re-calculation, that sounds very nonsensical,
since re-calculating as new bar data arrives is usually what an
indicator is supposed to do.

Sounds like you have some kind of problem which occurs when
calculating during State.Realtime -- since you say calculating and
rendering works during State.Historical just fine.

So, you need to add some Prints to figure out what your code is
doing. Add them to key areas to prove your assumptions are true,
and use them generously to prove expected code paths are, in fact,
being taken.

Without more information (aka, your code) it's difficult for anyone
to offer any serious guidance.

You could post some or all of your code, but you'd learn much more
by devoting your time to studying the execution of your code by using
some well-placed Print statements.

[NinjaTrader_ChelseaB]

Hello bicou,

What is being erased?

Is this a plot added with AddPlot()? (Are you unsetting previous bar plot values?)

Is this a drawing object? (Are you using unique tag names for each new object?)

[c2injacator]

As Chelsea B said, use a unique tag. I don't know if this will help, but if your indicator includes a draw object, and that draw object's tag is not unique, the draw object keeps getting overwritten and is always at the last bar. In the draw object's parameters, set the tag using a prefix, like "triangle1", and then append a string which is unique to the current bar. The easiest way to do that would look something like this: "triangle1" + CurrentBar.ToString().

[bicou]

thank you for your answers.
I'll see as soon as I get back.