Spydertrader uses Wealth-Lab Developer, with which he uses QCharts as a data source. The chartscript webpage (I am now assuming you are talking about wealth-lab.com webpage, please correct me if I am wrong) uses a different source, although I am not sure what it is (anyone?)... so it is still feasible to have two different volume numbers occasionally.
I have the Wealthlab-Pro program as well on my computer. I would appreciate knowing how to access the DU FRV etc. The chartscript doesn't show this data on my view when I look at the chart. It's on the website at wealthlab below the chart, but it doesn't show below the chart on my wealthlab program on my computer. Where does the output from the rank chartscript show up on my wealthlab on my computer? I appreciate your help!
Maybe I am jumping to conlusions saying your calculations are different. I see the point is that historical data at the Wealthlab.com website may be different from Qcharts data so the calculations would vary. In other words the difference in calculation isn't the formula, but the data input in the formula. Thanks for all help.
In WLD click the "commentary" button in the menu... it looks like a microphone. That will bring up the comments you see on the website. The Rank and Score should be in the top left area of your chartscript. This is assuming you downloaded and are using the chartscipt and indicators that Spydertrader put in the journal some time ago. Hope that helps.
I checked calculations of lower band, FRV and Peak volumes for IRIS for Sep 8, 2005 EOD Data for IRIS. I used Fidelity.com data, Yahoo.com data, and wealthlab.com data. The variation is from about 242,000 to 246,000 shares volume for FRV calculation for IRIS. This doesn't acount for the significant difference between spydertraders 183k and wealthlab.com 246k. No way this is data provider deal. In my opinion it must be a formula difference. Spydertrader used a different formula for FRV than the one at wealthlab.com. 183,000 >>>> 246,000 Correct me if I'm wrong please.
Spydertrader, I apologize for the length of these posts on one subject. I want to be as simple and clear as possible. I have the same chartscript (HERSHEY EQUITIES RANK 3.0) from the wealthlab.com site on my computer as you. I ran IRIS and other stocks in dry up for sep9 trading day through wealthlab.com Hershey Equity Rank v3.0 chartscript. I got FRV for IRIS to be 246K. I have since verified the FRV on my wealthlab=pro using Yahoo.com and Fidelity.com as 2 separate data sources. With all 3 sources(wealthlab.com, Yahoo.com, and Fidelity.com), I get the same FRV within +or -1000. That would be 246,000. You said your FRV calculation for IRIS was 184,000. Is seems highly unlikely that your qcharts data source and the 3 sources I have would be so enormously different. And my 3 sources confirm each other. The difference is substantial and I'm asking if you use a different formula or what. Thanks for your patience.
Spyder Outstandingly smooth equity curve. Try Market System Analyzer software to test position sizing alternatives. As you know I just quit my job to trade - my girlfriend was placated in some way by your equity curve
Threshold (of DU, FRV & Peak) values often differ (sometimes greatly; other times by small amounts) among various data vendors used for the formula calculations. In addition, if one updates a datasource using Wealth-Lab Developer (and Qcharts datafeed) at an inappropriate time, WLD occasionally downloads erroneous (or even totally incorrect) data. We often see such anomalies occurring when updating either too soon after market close or too late in the day. Others have experienced such anomalies when they have updated after midnight eastern time. A glitch in the WLD programming simply doesn't parse the data correctly, and as a result, the formula used (for DU, FRV and Peak Volume) return results often significantly different than the norm. Many other rational reasons exist for the differences, but outlining them all is a waste of time. I cannot explain why exactly my numbers differed from yours, nor should it matter. According to the information you observed, you did everything correctly, and so did I. As I have stated many times before, sometimes the differences keep you out of a good trade, and other times, the anomalies keep you out of a bad one. It all even's out in the end. - Spydertrader