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Strategies & Market Trends : Windows on Wall Street -- Ignore unavailable to you. Want to Upgrade?


To: Bill Martin who wrote (1304)6/7/1998 5:09:00 AM
From: NW_Trader  Read Replies (1) | Respond to of 2233
 
Bill:

Have you tried to create a group of stocks to test against using maintenance? At the risk of telling you what you already know, try this (I'm assuming that you have a basic collection of stocks in a group that you download already):

1. At the home screen, click on Securities and then on Maintenance. (If you have a chart already open, click on Security Maintenance button or the Security drop down menu then Maintenance.) In the bottom right corner, find and click on the Edit Groups button. On the next screen, click on the New Group button at the top. Name your new group System test ( or Rover or whatever ). Click OK, then select your new group to be displayed, select the securities you want to include in the group, click Save and then close. When you next wish to run your system scan, select your new group as the group of securities to scan. Make certain that you tell the scan to mark all the securities in the group. Output the results of your scan to another group that your can create in the same fashion as you created the first. When I'm creating a group that I know will be the population of a special scan, I always create a group coded to that scan at the same time. Thus, a scan that looks for alerts based on Jeff Cooper's 180 send its results to a group named ALERT: 180.

Don't know if this is what you were looking for, as I rarely run a scan of a system against a group of stocks for anything more than the most recent buy or sell signal. If you want to back test against a group, you can do a Scan as I've described above with the days/periods set to 180 or 360 at the Scan Options tab and no check mark in the Report only Last Signal box at the Output tab. Hope you've got a lot of RAM and time tho if you are scanning more that a couple of stocks. Good luck - let us know if this works out.

Peace and Justice --- Patrick




To: Bill Martin who wrote (1304)6/7/1998 4:27:00 PM
From: Ken Adams  Read Replies (1) | Respond to of 2233
 
Bill...

Pat has given you an idea that can work to test several stocks. Here's what I do (or did, don't scan much anymore):

Once you've created a system test that you are happy with you simply save as a "Template". You can have any symbol in this template, it doesn't matter. WOW only saves the template with the test and ignores the stock data itself.

Now, I have about 40 directories with Metastock files in each. These range from about 80-90 symbols in some to as little as 45 or so in others. Why I have it this way is another story.

At any rate, now all you do is go to the WOW main menu, click CHARTS, then NEW CHART. Now, pick the template you just saved. It will start with (Sys) in parenthesis, followed by the system name you gave it. Next, click directories and select one of the directories that contains your data. Go to the top of that directory and click on the first symbol, then OK. This will paint the first chart on that template.

Now click TOOLS, SMART SCAN PLUS. At the Scan Options screen you tell WOW to scan "Securities", tell it to scan for a trading system (you will just click these to mark your choices) then tell it how many days to look back. The more days you look back the slower will be the scan. Start with about 5.

Now click on the Securities tab. Check that you're in the directory you want to scan, then "Mark All". Or just go through and click on the ones you want to scan. You don't have to scan them all. On this screen you will need to tell WOW which template to use when scanning. Use the little down arrow then select the one you just saved. You may need to click on "Template Directory" and go hunting for the correct template. This is important!

Now click on the % Change tab and set all to 0.000, even if your trade system looks for a % change. It will override this tab. Then click on Output tab and select your options. Now, click OK and away she goes scanning everything you told it to. It will dump a report to the printer or to a file, your choice.

I just did all this as I wrote, to be sure it will work and it does. I did a simple 5 day momentum scan on a directory of 30 gold symbols. It took about 8 seconds and produced one sell signal for 6/4.

Give it a shot. I had to set the backtest to 10 days to get a signal, so you may have to experiment with that as well.

Good luck and let us know how you do!

Ken