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Ooops,
Make that 31 bit plus sign
~Bob
-----Original Message-----
From: Bob Scott <rlscott@xxxxxxxx>
To: mike@xxxxxxxxxx <mike@xxxxxxxxxx>; omega-list@xxxxxxxxxx
<omega-list@xxxxxxxxxx>
Date: Friday, September 21, 2001 12:45 PM
Subject: Re: RE: Problem with plotting volume as a symbol in chart
>Mike,
>
>The problem is 16 bit plus sign arithmetic and I believe that for
increasing
>counts the result would be as follows:
>
>0
>1
>2
>........
>2147483646
>2147483647
>-2147483648
>-2147483647
>-2147483646
>
>~Bob
>-----Original Message-----
>From: Mike Moore <mmoore04@xxxxxxxxxxxxx>
>To: omega-list@xxxxxxxxxx <omega-list@xxxxxxxxxx>
>Date: Friday, September 21, 2001 12:38 PM
>Subject: FW: RE: Problem with plotting volume as a symbol in chart
>
>
>>
>>
>>-----Original Message-----
>>From: Mike Moore [mailto:mmoore04@xxxxxxxxxxxxx]
>>Sent: Friday, September 21, 2001 2:34 PM
>>To: ian@xxxxxxxxxxx
>>Subject: RE: RE: Problem with plotting volume as a symbol in chart
>>
>>Couldn't wait until the end of the day. So, I went back to Monday and
>>Wednesday. The correct volume was higher than 2147483647 and when
>>2147483647 was subtracted from the correct volume, I came up with a number
>>that when added to my indicator's volume was 2147483649. A difference of
>>two. Could it be the limit is 2147483648?
>>Again, Thanks for the heads up as I never noticed the shortfall.
>>
>>
>>Mike Moore
>>
>>-----Original Message-----
>>From: macsmith [mailto:macsmith@xxxxxxxxx]
>>Sent: Friday, September 21, 2001 1:50 PM
>>To: mike@xxxxxxxxxx
>>Cc: omega-list@xxxxxxxxxx
>>Subject: Re: RE: Problem with plotting volume as a symbol in chart
>>
>>If 2147483647 is the limit then I think your solution of negating the
>volume
>>gives the wrong answer. Once the volume goes above 2147483647
then -volume
>>will start to count down from 2147483647 as the volume ticks up (two's
>>compliment arithmetic). I can understand that it would be easy to miss
>this
>>as it probably wouldn't go below 2000000000 and would seem plausible.
>>
>>I don't know that there is a solution. If TS is using 32 bit signed
>numbers
>>then this is a hard limit. You might consider ploting the volume in
blocks
>>of 100, ie:
>>
>>if vol < 0 then begin
>> blockVol = 21474836.47 + (-vol/100)
>>else
>> blockVol = vol/100;
>>
>>This should work until volumes reach 200B+ !
>>
>>Ian Smith
>>
>>>On Fri, 21 Sep 2001 13:33:40 -0500 "Mike Moore" <mmoore04@xxxxxxxxxxxxx>
>>wrote.
>>>It could very well be that number. It has been some time since I looked
>>>into the problem. I remember it was greater than 2 billion but I don't
>>>recall narrowing it down to a specific number.
>>>
>>>Mike Moore
>>>
>>>-----Original Message-----
>>>From: ian [mailto:ian@xxxxxxxxxxx]
>>>Sent: Friday, September 21, 2001 1:02 PM
>>>To: mike@xxxxxxxxxx
>>>Subject: Re: Problem with plotting volume as a symbol in chart
>>>
>>>could the volume limit be 2147483647? (2**31) -1 two's compliment
32
>>>bit
>>>number.
>>>
>>>Ian Smith
>>>
>>>Mike Moore wrote:
>>>
>>>> I also had a problem with TS giving incorrect volume when the volume
was
>>>> above 2 billion. My solution was to create the following new
indicator.
>>>> Hope this helps.
>>>>
>>>> Inputs: AvgLength(50), BreakoutPcnt(50), UpVolColor(Green),
>>>> DownVolColor(Red);
>>>> Variables: Vol(0), AvgVol(0), LrgVol(0);
>>>>
>>>> If Volume < 0 then begin
>>>> LrgVol = -(volume);
>>>> end
>>>> Else begin
>>>> LrgVol = Volume;
>>>> end;
>>>>
>>>> If Volume <> 0 Then Begin
>>>> If DataCompression >= 2 Then Begin
>>>> Plot1(LrgVol, "Volume");
>>>> Plot2(Average(LrgVol, AvgLength), "Volume Avg");
>>>> End
>>>> Else Begin
>>>> Plot1(UpTicks DownTicks, "Volume");
>>>> Plot2(Average(UpTicks DownTicks, AvgLength), "Volume
>>>Avg");
>>>> End;
>>>>
>>>> If Close >= Close[1] Then
>>>> SetPlotColor(1, UpVolColor)
>>>> Else
>>>> SetPlotColor(1, DownVolColor);
>>>> End;
>>>>
>>>> IF Plot1 >= Plot2 * (1 (BreakoutPcnt * .01)) Then
>>>> Alert("Volume is " NumToStr(BreakoutPcnt, 2) "bove its
>>>average");
>>>>
>>>> {Volume Expert Commentary}
>>>> #BeginCmtry
>>>> Commentary(ExpertVolumeAvg(Plot1, AvgLength, BreakoutPcnt));
>>>> #End;
>>>>
>>>> I am using TS2000 and have charts that plot and use as systems input
>>data,
>>>> 60 minute bars of total volume as a symbol for both New York and NASD.
>>>>
>>>> My problem is that when total volume goes over 2 billion, TS plots the
>>>close
>>>> as 0 rather than the correct number. The correct number is in the
>global
>>>> server but won't plot correctly. I am using e-signal as a data feed.
>>>>
>>>> Is there a fix available.
>>>>
>>>> Roger
>>>
>>
>>
>
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