Candlestick efs Problem

[TURLIES]

Hi,
I created a very simple Candlestick Study using the Formula Wizard, and it doesn't seem to be updating correctly.

Eg: The Image shows a green arrow on the last displayed candle, but no arrow should be displayed because only the > high and >= low criteria has been met, but not the close > open.

The candle met all of the criteria earlier on, but then the arrow was still displayed when the candle changed bearish and all of the criteria was not met.


Also, is there any way to have the arrows displayed on the presently forming candle only?


Many thanks,
Paul

[TURLIES]

Here is the efs file.

[waynecd]

Hi,

The conditions fluctuate from true to false intra-bar as the bar develops (bar changes from up-bar to down-bar as it forms) so once one of the conditions is true, the corresponding arrow is plotted and since there is no code to remove it if the condition reverses intra-bar, the arrow remains.

Hi,
I created a very simple Candlestick Study using the Formula Wizard, and it doesn't seem to be updating correctly.

Eg: The Image shows a green arrow on the last displayed candle, but no arrow should be displayed because only the > high and >= low criteria has been met, but not the close > open.

The candle met all of the criteria earlier on, but then the arrow was still displayed when the candle changed bearish and all of the criteria was not met.


Also, is there any way to have the arrows displayed on the presently forming candle only?

In the attached efs, the arrow will seem to blink as the bar develops and the condition changes from true to false and will disappear once the bar is complete and a new bar starts to form.

Important note: Because of the modifications I made, the Formula Wizard will no longer work with this efs.

Wayne

[TURLIES]

Hi Wayne,

The study works great. Thanks.

Paul

[waynecd]

Hi Paul,

Glad it worked.

Wayne

[TURLIES]

Hi wayne,

Is the following alteration possible for this study:

- At the moment, the "Arrow" is displayed when real-time data is being processed.

- When I look at my longer term charts over the weekend (or if I turn the Data Manager off...etc), no real-time data is available, so the "Arrow" is not displayed.

- Is it possible for the study to be shown even when no real-time data is being received - and - also work as it does now when real-time data is being processed?

Thanks,
Paul

[waynecd]

Hi Paul,

When the market is closed it should plot the arrow below the most current bar if the condition is true. Of course if the condition is false then no arrow will show.

If instead you intend for arrows to be shown for all candles when the market is closed (and not just the last bar) then in the menu of the attached file, select "true" for real time or "false" for when the market is closed (will show signals as appropriate for all loaded bars).

Wayne

[TURLIES]

Hi Wayne,

"When the market is closed it should plot the arrow below the most current bar if the condition is true. Of course if the condition is false then no arrow will show."

- I closed the Data Manager down & tested this on Daily and Interval Charts where the Study condition was "true", but I could not get it to display any Arrow.


"If instead you intend for arrows to be shown for all candles when the market is closed (and not just the last bar) then in the menu of the attached file, select "true" for real time or "false" for when the market is closed (will show signals as appropriate for all loaded bars)."

- This works fine. Thanks.

Paul

[waynecd]

Hi Paul,

When the market is closed it should plot the arrow below the most current bar if the condition is true. Of course if the condition is false then no arrow will show.

The comment I made (above) is wrong.

The -function main()- will only execute on a new tick. So if the market is closed and no trades are coming through, then the efs does not execute on the current bar but it will on previous bars as they are formed (as the bars are loaded into the chart).

If the Data Manager is not running then you don't get any ticks whatsoever, not even historical plots if the Data Manager is not running when the chart is trying to load.

That is my understanding. Maybe someone that has a firm grip on this issue can clarify this for both of us.

Wayne

[TURLIES]

Hi Wayne,

"The -function main()- will only execute on a new tick. So if the market is closed and no trades are coming through, then the efs does not execute on the current bar but it will on previous bars as they are formed (as the bars are loaded into the chart).

If the Data Manager is not running then you don't get any ticks whatsoever, not even historical plots if the Data Manager is not running when the chart is trying to load. "


- That's fine. I only required the alteration for chart analysis, and it would have made a nice addition to the study.

- I can simply use the Menu option you produced for chart analysis.

- The most important study feature is the real-time one you created for me in this thread, so thanks a lot for your assistance Wayne.

Paul

[ACM]

Re: Candlestick efs Problem

Paul
FWIW you can accomplish what you initially asked by using just the Formula Wizard.
Starting with your original formula you first modify the drawShape…() command in Set1 by adding a TagName (see yellow highlight in the following screenshot)



If this condition is true the formula will draw a green up arrow [the tagName of which is “arrow”] and will stop evaluating any subsequent conditions (this is because the Formula Wizard sets the conditions “in series” – for lack of a better term – by using if..else if…else if…etc which means that once any condition in the series is true this will stop the formula from evaluating the following conditions). Also since the tagName is not unique ie it is the same for all the green arrows drawn by this command only the last one will be drawn as there can only be one graphic object for each tagName.
Then you apply the same modification to Set2 as shown in the following image. Notice that the tagName is the same as that of Set1
If this condition is true the efs will draw a red down arrow and will stop evaluating any subsequent conditions
Because the tagName of this shape is the same as that of the green arrow it will remove the green arrow [if present] because as indicated also above there can only be one graphic object for each tagName



You then add a third condition that is by definition always true (eg 1 equal to 1) as shown in the next image.



This condition will be evaluated only if the prior two conditions are false ie when no arrow should be drawn. At that point the condition executes the removeShape() command to which you pass the tagName "arrow". Since this condition is always true it will remove whatever graphic object called "arrow" is drawn on the chart
So any time that neither condition in Set1 or Set2 is true this condition will execute the command to remove any drawn arrow
While the Formula Wizard may have limitations it is worthwhile to learn to use it because it can still provide you with some solutions.
Alex

Originally posted by TURLIES
Hi,
I created a very simple Candlestick Study using the Formula Wizard, and it doesn't seem to be updating correctly.

Eg: The Image shows a green arrow on the last displayed candle, but no arrow should be displayed because only the > high and >= low criteria has been met, but not the close > open.

The candle met all of the criteria earlier on, but then the arrow was still displayed when the candle changed bearish and all of the criteria was not met.


Also, is there any way to have the arrows displayed on the presently forming candle only?


Many thanks,
Paul

[waynecd]

and the script is much more elegant.

Thanks Alex.

Wayne

[TURLIES]

That's great. Thanks Alex.

Paul

[ACM]

You are welcome
Alex

Originally posted by TURLIES
That's great. Thanks Alex.

Paul