StockFetcher Forums · Announcements · New Feature: Filter Syntax Checking<< >>Post Follow-up
963 posts
msg #33071
8/31/2004 1:52:21 PM

We have just released a new StockFetcher syntax checking feature. This allows you to identify and help resolve any problems that may exist in your filters.

There are two ways to access this feature. If StockFetcher detects a potential problem in your filter, you will see a text-link below your filter text indicating a potential error.

(!)Potential Filter Error

You can also manually visit the syntax checker by clicking on the debug filter link when viewing the results of a text-based filter.

Below are a couple examples that illustrate the error checking:

Fetcher[show stocks where close is above high
and average volxume(20) is above 100000

set{A, high - low}
set{B, AA / 2}
show stocks where B is above 1.00

Since this feature is still under development, there are a couple limitations and you may run across a bug or two. If you do experience a problem or have a question, please don't hesitate to contact us.

Additionally, we are looking to add several additional features to the syntax checking, including:

  • Filter Results Checking - See how many stocks survive each phase of your filter.
  • Symbol Match Checking - Determine if and why a filter may not match a filter.
  • Support for My Filters - Scan saved filters for errors.

    Thank you, Support

  • cegis
    235 posts
    msg #33072
    Ignore cegis
    8/31/2004 3:54:18 PM

    Thank You! Thank You! Thank You!

    There'll be dancin' in the streets tonight!!!


    353 posts
    msg #33074
    Ignore yepher
    8/31/2004 6:55:26 PM

    I too thank you much

    353 posts
    msg #33075
    Ignore yepher
    8/31/2004 7:06:26 PM

    Just to let you know this error seems to slip through syntax check:

    close has been increasinf for 4 days


    close has been increasing for 4 days

    29 posts
    msg #33082
    Ignore houghton
    9/1/2004 9:00:05 AM

    There seems to be a glitch in the first example. "Close above high" checks OK, but close can't be above high. Equal to, of course, but not above.

    267 posts
    msg #33083
    Ignore tomb
    9/1/2004 9:06:57 AM


    Very good point; however, it does point out that the initial release of this feature is a syntax checker only. The syntax verification should be used to determine whether or not the actual text of your filter is parsed by StockFetcher correctly.

    At this time the syntax checker will not tell you whether or not the "corrected" filter will actually return results. That is for a future release when we display the number of survivors from each stage of your filter.

    Hope that helps!

    Tom Support

    69 posts
    msg #33116
    Ignore robdavis
    9/4/2004 2:19:26 AM

    Thank you!
    We are making progress!


    6,358 posts
    msg #33313
    Ignore TheRumpledOne
    9/19/2004 12:00:38 PM

    Where is the DEBUG FILTER LINK?

    I can't click on it above.

    235 posts
    msg #33326
    Ignore cegis
    9/20/2004 9:04:09 AM


    It's next to "show results 3 months ago"...



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