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Dennis,
When you are in the middle of drawing (i.e while you are keeping left mouse
button pressed down), the refresh for this particular chart is held as long
as you keep the mouse button. That is normal and helps drawing because
constant refreshes would make extensive flickering.
But once you release the mouse button it should start refreshing again.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "Dennis Brown" <see3d@xxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Thursday, July 03, 2008 4:46 PM
Subject: Re: [amibroker] When AFL just stops updating the chart now and then...
> Another good clue:
>
> 10:25 ET I was just adjusting a trend line handle and I held it too
> long and the chart stalled alert went off. I finished with the
> adjustment, but when I released the handle, the chart was permanently
> stalled until I clicked the refresh chart button.
>
> Well that was too good, so I tried it again. The same thing happened,
> I stalled the chart. Now, when I clicked on the chart, it updated
> once. If I went and adjusted a parameter, it updated once per param
> change, but the chart would not continue to auto update by timed
> refresh or new quotes coming in. Clicking the refresh chart button
> once again restored normal operation.
>
> Best regards,
> Dennis
>
>
> On Jul 2, 2008, at 4:22 PM, Dennis Brown wrote:
>
>> Well, to partially answer my own question about what can stop a chart
>> AFL from updating, I noticed the following condition:
>>
>> If my mouse is down over a study (including dragging) the chart stops
>> updating.
>>
>> My chart stalled monitor complains if I take too much time dragging a
>> study handle to a new position. LOL
>>
>> Of course, it makes sense that this is how it operates. I would not
>> want the chart jumping around while I was trying to drag to a
>> particular bar and price.
>>
>> However, this is interesting because it does show that there is a per
>> chart mode that can stop the chart updates if somehow AB thought it
>> was actively working with a study (my charts are full of studies). I
>> doubt this has anything to do with the problem though, it is just an
>> observation.
>>
>> OT: I do the same basic idea in my AFL charts when I am dragging Gfx
>> button arrays around. I reduce all my loops to minimum history bars
>> so that the chart execution time is faster for the user feedback of
>> the drag operation (even though the indicators may go a bit crazy).
>> Interestingly, it is the plot operations that take most of the time in
>> my charts when I am displaying all bars to check the equity curve (up
>> to 90% of the total), so I skip some plot commands when showing many
>> bars. Plotting 30,000 bars can take a long time, even though many
>> bars are in the same pixel. Perhaps I will become more clever as I
>> grow into an older and wiser AFL programmer.
>>
>> However, I can only go as fast as the chart will normally refresh
>> from quote updates or one second minimum and, I can't do anything
>> about speeding up fast AFL that I know of because SetBarRequired() can
>> not be set to a lower number than the highest value since chart
>> startup. It would be cool if someday there was a mode where I could
>> run my AFLs with study-like interaction speed with Gfx elements. :-)
>>
>> Best regards,
>> Dennis
>>
>>
>> On Jul 2, 2008, at 11:25 AM, Dennis Brown wrote:
>>
>>> Tomasz,
>>>
>>> Last night I wrote a small monitoring chart that runs every second
>>> and
>>> checks the value of a static variable and decrements it. My main
>>> chart sets this static variable to 5 every pass. If the value
>>> becomes
>>> negative, the monitor chart says "Chart Stalled".
>>>
>>> This morning at 9:45 ET, It said my chart was stalled and indeed it
>>> was. Clicking on the refresh chart button got it running again (I
>>> was
>>> in a trade again).
>>>
>>> This proves that the AFL on my main chart had stopped running, while
>>> the AFL on the monitor continued to run.
>>>
>>> So now the question becomes, under what conditions can a chart cease
>>> to refresh?
>>> -- I had RequestTimedRefresh(0) on the main chart. Now changed to
>>> (0,
>>> 0) for a test.
>>> -- The main chart takes 0.4 seconds to execute today using 5000 1
>>> minute bars of ES (yes, I do a lot of parallel indicators).
>>>
>>> PS. I would have switched to Support emails, except since there are
>>> others following this so I have kept posting here.
>>>
>>> Best regards,
>>> Dennis
>>>
>>> On Jul 1, 2008, at 1:00 PM, Dennis Brown wrote:
>>>
>>>> Tomasz,
>>>>
>>>> I can add a little more information to this problem now.
>>>>
>>>> This morning about 11:45 ET my chart stopped again.
>>>> I was trading ES and the market was fairly fast.
>>>> I have a Bar%Done graph that advances every second.
>>>> It takes the start time of the last bar and compares it to Now.
>>>> It stopped advancing.
>>>> I clicked to another chart tab and back again.
>>>> That made it advance one time, but would not continue running.
>>>> Clicking on the refresh chart made it go again.
>>>>
>>>> So I think that my AFL formula stopped running.
>>>>
>>>> I will verify that by other means the next time.
>>>>
>>>> Best regards,
>>>> Dennis
>>>>
>>>>
>>>> On Jun 28, 2008, at 9:08 AM, Dennis Brown wrote:
>>>>
>>>>> Tomasz,
>>>>>
>>>>> Thanks for the AFL suggestion.
>>>>>
>>>>> My Refresh Interval in Prefs is set to 1 at this time. In the
>>>>> past I
>>>>> have also used 1, 2, or 3 settings. However, I have a
>>>>> RequestTimesRefresh() that is set via parameter in the chart. At
>>>>> his
>>>>> time it is set to zero, though this has also happened with it set
>>>>> to
>>>>> other numbers (usually 1). I adjust these numbers depending on how
>>>>> much history I am using at the time in order to keep them higher
>>>>> than
>>>>> the actual time it takes to refresh the chart, so that the UI keeps
>>>>> working.
>>>>>
>>>>> This has happened to me for a couple of years and my charts and AFL
>>>>> have evolved to significant complexity over that time, along with
>>>>> changing computers and data vendors.
>>>>>
>>>>> I don't recall the problem happening when I was actively using the
>>>>> UI
>>>>> on the chart. It usually happens when the chart is just quietly
>>>>> updating and then just stops updating. I am usually just in the
>>>>> mode
>>>>> of waiting for something to happen on the charts while I am waiting
>>>>> to
>>>>> get into or out of a trade. I can not recall my previous
>>>>> operations,
>>>>> but I do a LOT of trend line studies. I doubt this problem could be
>>>>> easily reproduced --otherwise you would have customers complaining
>>>>> all
>>>>> over the place.
>>>>>
>>>>> I can tell you that clicking on most UI buttons or pulldown menus
>>>>> or
>>>>> clicking on the chart does not fix it. Only clicking on the
>>>>> Refresh
>>>>> button fixes it.
>>>>>
>>>>> I will take your AFL suggestions and some others and see if I can
>>>>> get
>>>>> better information about what is happening for the next time.
>>>>> Since
>>>>> it does not happen often, it is not so bad for me to click the
>>>>> Refresh
>>>>> button when it happens. The bad part is not realizing that it is
>>>>> not
>>>>> refreshing for too long and missing an important price move.
>>>>>
>>>>> Hopefully the next time it happens I will not be in a trade and can
>>>>> take my time to investigate it better.
>>>>>
>>>>> Best regards,
>>>>> Dennis
>>>>>
>>>>> On Jun 28, 2008, at 4:29 AM, Tomasz Janeczko wrote:
>>>>>
>>>>>> Dennis,
>>>>>>
>>>>>> You can use
>>>>>> TextOut( ""+Now(), Status("pxwidth")-200, Status("pxheight")/2 );
>>>>>>
>>>>>> To display last refresh time - this may help detecting such
>>>>>> problem.
>>>>>> It never happened on my end, but I would appreciate if someone
>>>>>> provides more
>>>>>> details under what circumstances it happens (what is your Prefs
>>>>>> "Refresh interval",
>>>>>> what do you do before that happens (use particular drawing tool
>>>>>> or ...?
>>>>>> does pressing F5 solves the problem ? I don't know...
>>>>>> just try to provide information that would make this
>>>>>> reproducible).
>>>>>>
>>>>>> Best regards,
>>>>>> Tomasz Janeczko
>>>>>> amibroker.com
>>>>>> ----- Original Message -----
>>>>>> From: "Dennis Brown" <see3d@xxxxxxxxxxx>
>>>>>> To: <amibroker@xxxxxxxxxxxxxxx>
>>>>>> Sent: Saturday, June 28, 2008 3:37 AM
>>>>>> Subject: [amibroker] When AFL just stops updating the chart now
>>>>>> and
>>>>>> then...
>>>>>>
>>>>>>
>>>>>>> Hello,
>>>>>>>
>>>>>>> I have something that happens once every few days with my RT
>>>>>>> charts.
>>>>>>>
>>>>>>> At some point in the day, the chart stops updating. I also have
>>>>>>> getRTData() functions in my AFL that also stop.
>>>>>>>
>>>>>>> I don't know if it is the data feed that stops handing the quotes
>>>>>>> to
>>>>>>> AB, or if XP is not giving the data, or if the AFL loop stops
>>>>>>> running. Everything looks normal, but I notice that my broker's
>>>>>>> charts have moved ahead and my AB charts have stalled (My
>>>>>>> broker's
>>>>>>> charts are prone to stalling in fast markets and my AB charts
>>>>>>> keep
>>>>>>> on
>>>>>>> ticking). This can be disconcerting when you are in a fast trade
>>>>>>> and
>>>>>>> you go blind without realizing it.
>>>>>>>
>>>>>>> I am using DTN IQFeed, but the same thing happened with eSignal
>>>>>>> in
>>>>>>> previous years. The data feed plug-in indicates everything is
>>>>>>> green
>>>>>>> and working.
>>>>>>>
>>>>>>> Clicking on the chart refresh button starts the chart running
>>>>>>> again.
>>>>>>>
>>>>>>> I am usually in a panic when this happens, so I have not been
>>>>>>> able
>>>>>>> to
>>>>>>> properly go through debug steps to isolate the problem area.
>>>>>>>
>>>>>>> So my questions are:
>>>>>>>
>>>>>>> 1. Does anyone know the root cause of this?
>>>>>>> 2. Is there a way to detect that the chart has stopped updating
>>>>>>> (other than by eye)?
>>>>>>> 3. Is there a way to automatically jump start the updating again
>>>>>>> when
>>>>>>> it happens?
>>>>>>>
>>>>>>> Thanks for any insights.
>>>>>>>
>>>>>>> If nobody can help, I will ask support.
>>>>>>>
>>>>>>> Best regards,
>>>>>>> Dennis
>>>>>>>
>>>>>>>
>>>>>>> -----------------------------------
>>
>> ------------------------------------
>>
>> Please note that this group is for discussion between users only.
>>
>> To get support from AmiBroker please send an e-mail directly to
>> SUPPORT {at} amibroker.com
>>
>> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>> http://www.amibroker.com/devlog/
>>
>> For other support material please check also:
>> http://www.amibroker.com/support.html
>> Yahoo! Groups Links
>>
>>
>>
>
>
> ------------------------------------
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
> Yahoo! Groups Links
>
>
>
------------------------------------
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